CLAUDE.md

@@ -460,7 +460,8 @@ auth and stays LAN-only, so ImageApi relays previews too.
   `unreachable_grace_secs`, `default_template`, `warn_above_megapixels`,
   `[[path_map]]` (`from`, `to`), `[[template]]` (`name`, `label`, `description`,
   `file`, `prompt_mode`, `prompt_join`, `output_megapixels`, `[[template.lora]]`
-  (`id`, `label`, `default`, `strength`, `min`, `max`)).
+  (`id`, `label`, `default`, `strength`, `min`, `max`), `[template.catalog]` (`strength`,
+  `min`, `max`, `exclude`)).
 - **Templates** are API-format workflow exports, read-only (never edit them from
   here). Nodes are found by `_meta.title`: `imageapi:source` (required, gets the
   photo path), `imageapi:save` (required, forced to `require_approval = true`; a
@@ -472,7 +473,12 @@ auth and stays LAN-only, so ImageApi relays previews too.
   low pair; the resolved scale multiplies each node's exported `strength_model` /
   `strength_clip` (1.0 = as exported, 0 = off, a pair keeps its ratio), never rewired; a
   node with no declaration keeps its strength, a declaration with no node isn't offered;
-  both log a startup warning). `prompt_mode = "append"`: the user's text is joined
+  both log a startup warning), `imageapi:lora-slot:<n>:high|low` (pickable LoRAs, #220:
+  each slot needs a high and a low node, numbered 1.. without gaps; picks fill them in order,
+  setting `lora_name` and scaling the exported strength, unused slots run at 0; the catalog is
+  ComfyUI's `/object_info/LoraLoaderModelOnly` list (cached 60 s, re-read when a submit names
+  an unknown id) paired by High/Low name tokens (`src/enhance/lora_catalog.rs`), minus every
+  `lora_name` the workflow loads outside the slots and `catalog.exclude` substrings). `prompt_mode = "append"`: the user's text is joined
   after the template's own prompt with `prompt_join` (default one space); empty text
   leaves the prompt as is. `"replace"`: the text *is* the prompt and is required (empty
   = 400); it needs a prompt node. With no `reference_path` the reference node **and
@@ -519,8 +525,12 @@ GET  /enhance/templates
                      "prompt_mode": "append"|"replace", "prompt_required",
                      "accepts_reference","default","output_megapixels",
                      "warn_above_megapixels", "output": "image"|"video",
-                     "loras": [{"id","label","default","strength","min","max"}]}]}
+                     "loras": [{"id","label","default","strength","min","max"}],
-POST /enhance  {"path","template","prompt"?,"reference_path"?,"loras"?: {id: bool|scale},"library"?}  -> job
+                     "slots": n, "catalog"?: {"loras": [{"id","label"}],"strength","min","max"}}]}
+POST /enhance  {"path","template","prompt"?,"reference_path"?,"loras"?: {id: bool|scale},
+                "slots"?: [{"lora": catalog id, "scale"?}],"library"?}  -> job
+     (slots: at most the template's slot count, no duplicates, unknown id = 400; no scale =
+      catalog.strength, <= 0 = slot unused)
      (true = the switch's strength, false or scale <= 0 = off, a scale is clamped to min..max;
       a missing switch uses its default; an id the template doesn't offer = 400)
 GET  /enhance/jobs/{id}              -> job
@@ -540,6 +550,7 @@ POST /enhance/jobs/{id}/discard      -> job (hidden from the list; ComfyUI untou
 
 job = {"id","status","queue_position"?,"error"?,"path","library_id","template",
        "prompt"?,"reference_path"?,"loras"?: {id: scale} (resolved, 0 = off; absent without switches),
+       "slots"?: [{"lora","label","scale"}] (picked LoRAs; absent when none),
        "created_at","updated_at",
        "run_ms": <ms ComfyUI ran it, or null until finished / when ComfyUI gave no timings>,
        "pending": [{"n","preview": "/enhance/jobs/{id}/preview/{n}","approved"}],

enhance.example.toml

@@ -87,3 +87,17 @@ default = false                      # default: false; used when the request omi
 strength = 1.0                       # default: 1.0; the scale when on without a number
 min = 0.0                            # default: 0.0; slider range while on (a requested
 max = 1.5                            # default: 1.5;  scale is clamped; <= 0 is off)
+
+# Picked LoRAs (#220): LoRA loader nodes titled "imageapi:lora-slot:<n>:high"
+# and ":low" (n = 1, 2, ... without gaps) are slots the app fills from a
+# catalog, one picked LoRA per slot. The catalog is every LoRA file ComfyUI
+# lists whose name pairs as High/Low (StyleHigh/StyleLow, x-HIGH/x-LOW,
+# x_high_noise/x_low_noise), minus the LoRAs the workflow already loads
+# (lightx2v, switches); a new download shows up within a minute. A pick's
+# scale multiplies the slot's exported strength; unused slots run at 0.
+# Settings for the template above (all optional):
+[template.catalog]
+strength = 1.0                       # default: 1.0; a pick's scale when the request gives none
+min = 0.0                            # default: 0.0; slider range (a requested scale is
+max = 1.5                            # default: 1.5;  clamped; <= 0 leaves the slot unused)
+exclude = []                         # default: []; file-name substrings never offered

migrations/2026-11-03-200000_add_enhance_lora_slots/down.sql

@@ -0,0 +1 @@
+ALTER TABLE enhance_jobs DROP COLUMN lora_slots;

migrations/2026-11-03-200000_add_enhance_lora_slots/up.sql

@@ -0,0 +1,3 @@
+-- LoRAs picked into the template's slots (#220): JSON [{lora, label, scale}];
+-- NULL = none picked.
+ALTER TABLE enhance_jobs ADD COLUMN lora_slots TEXT;

src/database/enhance_dao.rs

@@ -66,11 +66,14 @@ pub struct EnhanceJobRow {
     /// template had none. Owned by `crate::enhance` like `pending`.
     #[diesel(sql_type = Nullable<Text>)]
     pub loras: Option<String>,
+    /// LoRAs picked into slots (#220), JSON `[{lora, label, scale}]`.
+    #[diesel(sql_type = Nullable<Text>)]
+    pub lora_slots: Option<String>,
 }
 
 const COLUMNS: &str = "id, original_hash, library_id, rel_path, template, prompt, reference_hash, \
      reference_path, comfy_prompt_id, status, error, queue_position, pending, saved, \
-     discarded, created_at, updated_at, run_ms, loras";
+     discarded, created_at, updated_at, run_ms, loras, lora_slots";
 
 /// One distinct prompt used across jobs, newest use first.
 #[derive(Debug, Clone, PartialEq, Eq, QueryableByName)]
@@ -175,7 +178,7 @@ impl EnhanceJobDao for SqliteEnhanceJobDao {
         trace_db_call("insert", "enhance_job_insert", |_span| {
             let mut conn = self.connection.lock().expect("Unable to get EnhanceJobDao");
             sql_query(format!(
-                "INSERT INTO enhance_jobs ({COLUMNS}) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"
+                "INSERT INTO enhance_jobs ({COLUMNS}) VALUES (?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"
             ))
             .bind::<Text, _>(&job.id)
             .bind::<Text, _>(&job.original_hash)
@@ -196,6 +199,7 @@ impl EnhanceJobDao for SqliteEnhanceJobDao {
             .bind::<BigInt, _>(job.updated_at)
             .bind::<Nullable<BigInt>, _>(job.run_ms)
             .bind::<Nullable<Text>, _>(&job.loras)
+            .bind::<Nullable<Text>, _>(&job.lora_slots)
             .execute(&mut *conn)
             .map(|_| ())
             .map_err(|e| anyhow::anyhow!("Insert error: {}", e))
@@ -376,6 +380,7 @@ mod tests {
             updated_at: created,
             run_ms: None,
             loras: None,
+            lora_slots: None,
         }
     }
 

src/database/schema.rs

@@ -74,6 +74,7 @@ diesel::table! {
         updated_at -> BigInt,
         run_ms -> Nullable<BigInt>,
         loras -> Nullable<Text>,
+        lora_slots -> Nullable<Text>,
     }
 }
 

src/enhance/comfy.rs

@@ -330,6 +330,13 @@ impl ComfyClient {
         }
     }
 
+    /// Every LoRA file ComfyUI can load (`lora_name` choices of
+    /// LoraLoaderModelOnly), for the pickable-LoRA catalog (#220).
+    pub async fn lora_names(&self) -> Result<Vec<String>, ComfyError> {
+        let body = self.get_json("/object_info/LoraLoaderModelOnly").await?;
+        Ok(super::lora_catalog::names_from_object_info(&body))
+    }
+
     async fn get_json(&self, path: &str) -> Result<Value, ComfyError> {
         let resp = self.http.get(self.url(path)).send().await?;
         if !resp.status().is_success() {

src/enhance/config.rs

@@ -104,6 +104,55 @@ pub struct TemplateConfig {
     /// workflow nodes titled `imageapi:lora:<id>`.
     #[serde(rename = "lora", default)]
     pub loras: Vec<LoraConfig>,
+    /// Picked LoRAs (#220), for templates with `imageapi:lora-slot:<n>`
+    /// nodes: `[template.catalog]`.
+    #[serde(default)]
+    pub catalog: CatalogConfig,
+}
+
+/// How LoRAs picked from the catalog are scaled, and which never show.
+#[derive(Debug, Clone, PartialEq, Deserialize, serde::Serialize)]
+#[serde(default, deny_unknown_fields)]
+pub struct CatalogConfig {
+    /// Scale a pick gets when the request gives none (1.0 = as exported).
+    pub strength: f64,
+    /// Slider range; a requested scale is clamped to it (<= 0 = slot unused).
+    pub min: f64,
+    pub max: f64,
+    /// LoRA file names containing any of these (case-insensitive) are never
+    /// offered, on top of the LoRAs the workflow already loads.
+    #[serde(skip_serializing)]
+    pub exclude: Vec<String>,
+}
+
+impl Default for CatalogConfig {
+    fn default() -> Self {
+        Self {
+            strength: 1.0,
+            min: 0.0,
+            max: 1.5,
+            exclude: Vec::new(),
+        }
+    }
+}
+
+impl CatalogConfig {
+    /// A pick's scale: absent = `strength`, <= 0 = unused, else clamped.
+    pub fn resolve(&self, scale: Option<f64>) -> f64 {
+        match scale {
+            None => self.strength,
+            Some(s) if s <= 0.0 => 0.0,
+            Some(s) => s.clamp(self.min, self.max),
+        }
+    }
+}
+
+/// `0 <= min < max`, `strength` within them, all finite.
+fn check_range(strength: f64, min: f64, max: f64) -> bool {
+    [strength, min, max].iter().all(|v| v.is_finite())
+        && min >= 0.0
+        && min < max
+        && (min..=max).contains(&strength)
 }
 
 /// One LoRA switch (`[[template.lora]]`).
@@ -228,12 +277,7 @@ impl EnhanceConfig {
                 if l.label.trim().is_empty() {
                     bail!("template {:?}: lora {:?} needs a label", t.name, l.id);
                 }
-                let finite = [l.strength, l.min, l.max].iter().all(|v| v.is_finite());
+                if !check_range(l.strength, l.min, l.max) {
-                if !finite
-                    || l.min < 0.0
-                    || l.min >= l.max
-                    || !(l.min..=l.max).contains(&l.strength)
-                {
                     bail!(
                         "template {:?}: lora {:?} needs 0 <= min < max and strength within them \
                          (got min {}, strength {}, max {})",
@@ -245,6 +289,17 @@ impl EnhanceConfig {
                     );
                 }
             }
+            let c = &t.catalog;
+            if !check_range(c.strength, c.min, c.max) {
+                bail!(
+                    "template {:?}: [template.catalog] needs 0 <= min < max and strength within them \
+                     (got min {}, strength {}, max {})",
+                    t.name,
+                    c.min,
+                    c.strength,
+                    c.max
+                );
+            }
         }
         if let Some(d) = &self.default_template
             && !self.templates.iter().any(|t| &t.name == d)
@@ -414,6 +469,27 @@ mod tests {
         assert_eq!(parsed["d"], LoraRequest::Scale(1.0));
     }
 
+    #[test]
+    fn catalog_settings_parse_validate_and_resolve() {
+        let base = "[[template]]\nname='a'\nlabel='A'\nfile='a.json'\n";
+        let c = parse(base).unwrap().templates[0].catalog.clone();
+        assert_eq!(c, CatalogConfig::default());
+        let set = parse(&format!(
+            "{base}[template.catalog]\nstrength=0.7\nmax=1.2\nexclude=['x']"
+        ))
+        .unwrap();
+        let c = &set.templates[0].catalog;
+        assert_eq!(
+            (c.strength, c.min, c.max, c.exclude.clone()),
+            (0.7, 0.0, 1.2, vec!["x".to_string()])
+        );
+        assert_eq!(c.resolve(None), 0.7);
+        assert_eq!(c.resolve(Some(0.0)), 0.0);
+        assert_eq!(c.resolve(Some(5.0)), 1.2);
+        assert!(parse(&format!("{base}[template.catalog]\nstrength=2.0")).is_err());
+        assert!(parse(&format!("{base}[template.catalog]\nslots=2")).is_err());
+    }
+
     #[test]
     fn template_defaults() {
         let cfg = parse("[[template]]\nname='a'\nlabel='A'\nfile='a.json'").unwrap();

src/enhance/handlers.rs

@@ -95,6 +95,9 @@ pub struct JobView {
     /// template had none.
     #[serde(skip_serializing_if = "Option::is_none")]
     loras: Option<std::collections::BTreeMap<String, f64>>,
+    /// The LoRAs picked into slots (#220); absent when none were.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    slots: Option<Vec<super::service::SlotChoice>>,
     created_at: i64,
     updated_at: i64,
     /// Milliseconds ComfyUI ran the job; null until it has finished.
@@ -134,6 +137,10 @@ pub fn job_view(job: &EnhanceJobRow) -> JobView {
             .loras
             .as_deref()
             .and_then(|j| serde_json::from_str(j).ok()),
+        slots: job
+            .lora_slots
+            .as_deref()
+            .and_then(|j| serde_json::from_str(j).ok()),
         created_at: job.created_at,
         updated_at: job.updated_at,
         run_ms: job.run_ms,
@@ -233,6 +240,19 @@ struct TemplateView {
     output: super::template::OutputKind,
     /// Optional LoRAs the client can switch on or off (#218).
     loras: Vec<super::config::LoraConfig>,
+    /// How many LoRAs a job can pick (#220); 0 = none.
+    slots: usize,
+    /// The LoRAs it can pick from (`[{id, label}]`), and how they scale.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    catalog: Option<CatalogView>,
+}
+
+#[derive(Serialize)]
+struct CatalogView {
+    loras: Vec<super::lora_catalog::CatalogEntry>,
+    strength: f64,
+    min: f64,
+    max: f64,
 }
 
 #[get("/enhance/templates")]
@@ -246,10 +266,15 @@ pub async fn get_templates(_: Claims, svc: web::Data<EnhanceService>) -> impl Re
         None
     };
     let default = svc.default_template().map(str::to_string);
+    let mut catalogs = Vec::new();
+    for t in svc.templates() {
+        catalogs.push((t.slot_count() > 0).then_some(svc.catalog(t).await));
+    }
     let templates: Vec<TemplateView> = svc
         .templates()
         .iter()
-        .map(|t| TemplateView {
+        .zip(catalogs)
+        .map(|(t, catalog)| TemplateView {
             name: t.cfg.name.clone(),
             label: t.cfg.label.clone(),
             description: t.cfg.description.clone(),
@@ -262,6 +287,13 @@ pub async fn get_templates(_: Claims, svc: web::Data<EnhanceService>) -> impl Re
             warn_above_megapixels: svc.config.warn_above_megapixels,
             output: t.output,
             loras: t.lora_switches().cloned().collect(),
+            slots: t.slot_count(),
+            catalog: catalog.map(|loras| CatalogView {
+                loras,
+                strength: t.cfg.catalog.strength,
+                min: t.cfg.catalog.min,
+                max: t.cfg.catalog.max,
+            }),
         })
         .collect();
     let mut body = json!({
@@ -295,6 +327,10 @@ pub struct SubmitBody {
     /// the switch's range; <= 0 is off). A missing id uses its default.
     #[serde(default)]
     pub loras: std::collections::BTreeMap<String, super::config::LoraRequest>,
+    /// LoRAs picked from the template's catalog (#220), one per slot in
+    /// order: `[{lora: id, scale?}]`; no scale = the catalog's strength.
+    #[serde(default)]
+    pub slots: Vec<super::service::SlotRequest>,
     #[serde(default)]
     pub library: Option<String>,
 }
@@ -341,6 +377,7 @@ pub async fn submit(
             body.prompt.as_deref(),
             reference.as_ref(),
             &body.loras,
+            &body.slots,
         )
         .await
     {

src/enhance/integration_tests.rs

@@ -27,6 +27,7 @@ use crate::versions::xmp::test_png::{producer_xmp, write_png};
 
 const RESTORE: &str = include_str!("../../tests/fixtures/enhance/restore_turbo.json");
 const ANIMATE_LORAS: &str = include_str!("../../tests/fixtures/enhance/animate_loras.json");
+const ANIMATE_SLOTS: &str = include_str!("../../tests/fixtures/enhance/animate_slots.json");
 const EDIT: &str = include_str!("../../tests/fixtures/enhance/edit_turbo.json");
 
 // ---- mock ComfyUI ---------------------------------------------------------
@@ -45,6 +46,9 @@ struct Mock {
     free_calls: AtomicUsize,
     reject_prompts: Mutex<Option<Value>>,
     view_404: Mutex<bool>,
+    /// What `/object_info/LoraLoaderModelOnly` lists.
+    lora_names: Mutex<Vec<String>>,
+    lora_list_calls: AtomicUsize,
 }
 
 async fn start_mock() -> (Arc<Mock>, String) {
@@ -54,6 +58,16 @@ async fn start_mock() -> (Arc<Mock>, String) {
         App::new()
             .app_data(Data::from(m.clone()))
             .route("/system_stats", web::get().to(|| async { HttpResponse::Ok().json(json!({})) }))
+            .route(
+                "/object_info/LoraLoaderModelOnly",
+                web::get().to(|m: Data<Mock>| async move {
+                    m.lora_list_calls.fetch_add(1, Ordering::SeqCst);
+                    let names = m.lora_names.lock().unwrap().clone();
+                    HttpResponse::Ok().json(json!({"LoraLoaderModelOnly": {"input": {"required": {
+                        "lora_name": [names], "strength_model": ["FLOAT", {}]
+                    }}}}))
+                }),
+            )
             .route(
                 "/prompt",
                 web::post().to(|m: Data<Mock>, body: web::Json<Value>| async move {
@@ -170,6 +184,7 @@ fn template(name: &str, mode: PromptMode, json: &str) -> Template {
             prompt_join: " ".into(),
             output_megapixels: 1.0,
             loras: Vec::new(),
+            catalog: Default::default(),
         },
         serde_json::from_str(json).unwrap(),
     )
@@ -222,6 +237,7 @@ async fn fx_with(url: Option<String>, tweak: impl FnOnce(&mut EnhanceConfig)) ->
             template("restore", PromptMode::Append, RESTORE),
             template("edit", PromptMode::Replace, EDIT),
             animate_with_style(),
+            template("animate-picks", PromptMode::Append, ANIMATE_SLOTS),
         ],
         dao,
     )
@@ -350,7 +366,7 @@ async fn comfy_down_means_unavailable_and_a_clear_submit_error() {
     assert_eq!(st, 200);
     assert_eq!(body["available"], false);
     assert_eq!(body["reason"], "ComfyUI isn't running");
-    assert_eq!(body["templates"].as_array().unwrap().len(), 3);
+    assert_eq!(body["templates"].as_array().unwrap().len(), 4);
 
     let (st, body, _) = call(
         &fx,
@@ -1010,6 +1026,7 @@ async fn unreachable_active_jobs_become_unavailable_after_the_grace_period() {
         updated_at: now,
         run_ms: None,
         loras: None,
+        lora_slots: None,
     };
     SqliteEnhanceJobDao::from_shared(fx.conn.clone())
         .insert(&dao_job)
@@ -1223,3 +1240,114 @@ async fn lora_switches_are_listed_sent_and_stored_on_the_job() {
     .await;
     assert!(plain.get("loras").is_none(), "{plain}");
 }
+
+#[actix_rt::test]
+async fn picked_loras_are_listed_filled_into_slots_and_stored() {
+    let fx = fx().await;
+    fx.put(PHOTO, b"photo");
+    *fx.mock.lora_names.lock().unwrap() = [
+        "wan2.2_i2v_lightx2v_4steps_lora_v1_high_noise.safetensors",
+        "wan2.2_i2v_lightx2v_4steps_lora_v1_low_noise.safetensors",
+        "example_style_high.safetensors",
+        "example_style_low.safetensors",
+        "MotionHigh.safetensors",
+        "MotionLow.safetensors",
+        "Lonely_High.safetensors",
+    ]
+    .map(String::from)
+    .to_vec();
+
+    // Only the slot template lists a catalog; the workflow's own LoRAs
+    // (lightx2v, the style switch) and unpaired files are left out.
+    let (_, body, _) = call(&fx, "GET", "/enhance/templates", None).await;
+    let templates = body["templates"].as_array().unwrap();
+    let picks = templates
+        .iter()
+        .find(|t| t["name"] == "animate-picks")
+        .unwrap();
+    assert_eq!(picks["slots"], 2);
+    assert_eq!(
+        picks["catalog"],
+        json!({"loras": [{"id": "motion", "label": "Motion"}], "strength": 1.0, "min": 0.0, "max": 1.5})
+    );
+    let restore = templates.iter().find(|t| t["name"] == "restore").unwrap();
+    assert_eq!(restore["slots"], 0);
+    assert!(restore.get("catalog").is_none());
+
+    let (st, job, _) = call(
+        &fx,
+        "POST",
+        "/enhance",
+        Some(json!({"path": PHOTO, "template": "animate-picks", "slots": [{"lora": "motion", "scale": 0.5}]})),
+    )
+    .await;
+    assert_eq!(st, 200, "{job}");
+    assert_eq!(
+        job["slots"],
+        json!([{"lora": "motion", "label": "Motion", "scale": 0.5}])
+    );
+    let (_, again, _) = call(
+        &fx,
+        "GET",
+        &format!("/enhance/jobs/{}", job["id"].as_str().unwrap()),
+        None,
+    )
+    .await;
+    assert_eq!(again["slots"], job["slots"]);
+    {
+        let sent = fx.mock.submitted.lock().unwrap();
+        let p = &sent[0]["prompt"];
+        assert_eq!(p["60"]["inputs"]["lora_name"], "MotionHigh.safetensors");
+        assert_eq!(p["61"]["inputs"]["lora_name"], "MotionLow.safetensors");
+        assert_eq!(p["60"]["inputs"]["strength_model"], json!(0.5));
+        assert_eq!(p["62"]["inputs"]["strength_model"], json!(0.0));
+    }
+
+    // No scale: the catalog's strength.
+    let (_, job, _) = call(
+        &fx,
+        "POST",
+        "/enhance",
+        Some(json!({"path": PHOTO, "template": "animate-picks", "slots": [{"lora": "motion"}]})),
+    )
+    .await;
+    assert_eq!(job["slots"][0]["scale"], json!(1.0));
+
+    // A LoRA downloaded since the last listing is found by re-reading it.
+    fx.mock.lora_names.lock().unwrap().extend([
+        "NewHigh.safetensors".to_string(),
+        "NewLow.safetensors".to_string(),
+    ]);
+    let (st, job, _) = call(
+        &fx,
+        "POST",
+        "/enhance",
+        Some(json!({"path": PHOTO, "template": "animate-picks", "slots": [{"lora": "new"}, {"lora": "motion"}]})),
+    )
+    .await;
+    assert_eq!(st, 200, "{job}");
+    assert_eq!(job["slots"][0]["lora"], "new");
+
+    // Unknown, duplicate, too many, or on a template without slots: 400.
+    for (template, slots) in [
+        ("animate-picks", json!([{"lora": "nope"}])),
+        (
+            "animate-picks",
+            json!([{"lora": "motion"}, {"lora": "motion"}]),
+        ),
+        (
+            "animate-picks",
+            json!([{"lora": "motion"}, {"lora": "new"}, {"lora": "lonely"}]),
+        ),
+        ("restore", json!([{"lora": "motion"}])),
+    ] {
+        let (st, err, _) = call(
+            &fx,
+            "POST",
+            "/enhance",
+            Some(json!({"path": PHOTO, "template": template, "slots": slots})),
+        )
+        .await;
+        assert_eq!(st, 400, "{template} {err}");
+    }
+}

src/enhance/lora_catalog.rs

@@ -0,0 +1,336 @@
+//! Pickable LoRAs (#220): the LoRA files ComfyUI can see, paired into the
+//! high-noise / low-noise sets Wan 2.2's two experts need.
+//!
+//! Nothing is configured per LoRA: a file whose name has a `high` or `low`
+//! token pairs with the file that has the other token and is otherwise the
+//! same name (`BounceHighWan2_2` + `BounceLowWan2_2`, `x-HIGH` + `x-LOW`,
+//! `…_high_noise` + `…_low_noise`). A file without a partner isn't offered.
+//! The ids are derived from the names, so they stay stable across restarts
+//! and refreshes.
+
+use std::collections::{BTreeMap, HashSet};
+
+use serde::Serialize;
+
+/// One pickable LoRA: the pair of files and how the app shows it.
+#[derive(Debug, Clone, PartialEq, Eq, Serialize)]
+pub struct CatalogEntry {
+    /// Stable id clients send (`POST /enhance { slots: [{lora}] }`).
+    pub id: String,
+    pub label: String,
+    /// `lora_name` values as ComfyUI lists them (folder prefix included).
+    #[serde(skip)]
+    pub high: String,
+    #[serde(skip)]
+    pub low: String,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+enum Noise {
+    High,
+    Low,
+}
+
+/// Pair `names` (ComfyUI's `lora_name` choices) into catalog entries, sorted
+/// by label. `exclude` holds names that never appear (the template's own
+/// fixed LoRAs), compared exactly; `exclude_substrings` drops any name that
+/// contains one of them (case-insensitive).
+pub fn build(
+    names: &[String],
+    exclude: &HashSet<String>,
+    exclude_substrings: &[String],
+) -> Vec<CatalogEntry> {
+    let lowered: Vec<String> = exclude_substrings
+        .iter()
+        .map(|s| s.to_lowercase())
+        .filter(|s| !s.is_empty())
+        .collect();
+    // key (the name with its noise token masked) -> (high, low, masked stem)
+    let mut sides: BTreeMap<String, (Option<&String>, Option<&String>, String)> = BTreeMap::new();
+    for name in names {
+        if exclude.contains(name) {
+            continue;
+        }
+        let lower = name.to_lowercase();
+        if lowered.iter().any(|s| lower.contains(s)) {
+            continue;
+        }
+        let Some((noise, masked)) = classify(name) else {
+            continue;
+        };
+        let entry = sides
+            .entry(masked.to_lowercase())
+            .or_insert((None, None, masked));
+        match noise {
+            Noise::High => entry.0 = entry.0.or(Some(name)),
+            Noise::Low => entry.1 = entry.1.or(Some(name)),
+        }
+    }
+
+    let mut taken = HashSet::new();
+    let mut out: Vec<CatalogEntry> = sides
+        .into_values()
+        .filter_map(|(high, low, masked)| {
+            let (high, low) = (high?, low?);
+            let base = slug(&masked);
+            let mut id = base.clone();
+            let mut n = 2;
+            while !taken.insert(id.clone()) {
+                id = format!("{base}-{n}");
+                n += 1;
+            }
+            Some(CatalogEntry {
+                id,
+                label: label(&masked),
+                high: high.clone(),
+                low: low.clone(),
+            })
+        })
+        .collect();
+    out.sort_by(|a, b| {
+        a.label
+            .to_lowercase()
+            .cmp(&b.label.to_lowercase())
+            .then(a.id.cmp(&b.id))
+    });
+    out
+}
+
+/// The name's noise side and the name with that token masked as `{}`
+/// (folder and extension kept, so two folders never pair with each other).
+///
+/// A token counts when it starts the name, follows a non-letter, or is
+/// capitalised (camel case), so `slow` or `Glowing` are never a `low`. The
+/// last such token wins (`High…_low_noise` is low).
+fn classify(name: &str) -> Option<(Noise, String)> {
+    let (dir, file) = match name.rfind(['/', '\\']) {
+        Some(i) => name.split_at(i + 1),
+        None => ("", name),
+    };
+    let stem_end = file.rfind('.').unwrap_or(file.len());
+    let stem = &file[..stem_end];
+    let lower = stem.to_lowercase();
+    let mut best: Option<(usize, usize, Noise)> = None;
+    for (token, noise) in [("high", Noise::High), ("low", Noise::Low)] {
+        for (at, _) in lower.match_indices(token) {
+            let original = &stem[at..at + token.len()];
+            let boundary = at == 0
+                || !stem[..at]
+                    .chars()
+                    .next_back()
+                    .is_some_and(|c| c.is_alphabetic())
+                || original.starts_with(char::is_uppercase);
+            // Not the start of a longer lowercase word (`lower`, `highway`).
+            let after = stem[at + token.len()..].chars().next();
+            let ends = match after {
+                None => true,
+                Some(c) => {
+                    !c.is_alphabetic()
+                        || c.is_uppercase()
+                        || original.chars().all(char::is_uppercase)
+                }
+            };
+            if boundary && ends && best.is_none_or(|(b, _, _)| at > b) {
+                best = Some((at, token.len(), noise));
+            }
+        }
+    }
+    let (at, len, noise) = best?;
+    let masked = format!(
+        "{dir}{}{{}}{}{}",
+        &stem[..at],
+        &stem[at + len..],
+        &file[stem_end..]
+    );
+    Some((noise, masked))
+}
+
+/// `wan22/Bounce{}Wan2_2.safetensors` -> `bounce-wan2-2`.
+fn slug(masked: &str) -> String {
+    let file = masked.rsplit(['/', '\\']).next().unwrap_or(masked);
+    let stem = file.rsplit_once('.').map(|(s, _)| s).unwrap_or(file);
+    let mut out = String::new();
+    for c in split_words(stem).join(" ").chars() {
+        if c.is_ascii_alphanumeric() {
+            out.push(c.to_ascii_lowercase());
+        } else if !out.ends_with('-') {
+            out.push('-');
+        }
+    }
+    let out = out.trim_matches('-').to_string();
+    if out.is_empty() { "lora".into() } else { out }
+}
+
+/// `wan22/Bounce{}Wan2_2.safetensors` -> `Bounce Wan2 2`.
+fn label(masked: &str) -> String {
+    let file = masked.rsplit(['/', '\\']).next().unwrap_or(masked);
+    let stem = file.rsplit_once('.').map(|(s, _)| s).unwrap_or(file);
+    let words = split_words(stem);
+    if words.is_empty() {
+        stem.to_string()
+    } else {
+        words.join(" ")
+    }
+}
+
+/// Words of a stem: split on separators, the noise mask and camel case.
+fn split_words(stem: &str) -> Vec<String> {
+    let mut words = Vec::new();
+    let mut cur = String::new();
+    let mut prev: Option<char> = None;
+    for c in stem.replace("{}", " ").chars() {
+        if c == '_' || c == '-' || c == ' ' {
+            if !cur.is_empty() {
+                words.push(std::mem::take(&mut cur));
+            }
+        } else {
+            if c.is_uppercase() && prev.is_some_and(|p| p.is_lowercase()) && !cur.is_empty() {
+                words.push(std::mem::take(&mut cur));
+            }
+            cur.push(c);
+        }
+        prev = Some(c);
+    }
+    if !cur.is_empty() {
+        words.push(cur);
+    }
+    words
+}
+
+/// ComfyUI's `lora_name` choices from `GET /object_info/LoraLoaderModelOnly`,
+/// in either shape: `[[..names]]` (classic) or `["COMBO", {"options": [..]}]`.
+pub fn names_from_object_info(body: &serde_json::Value) -> Vec<String> {
+    let spec = &body["LoraLoaderModelOnly"]["input"]["required"]["lora_name"];
+    let list = if spec[0].is_array() {
+        &spec[0]
+    } else {
+        &spec[1]["options"]
+    };
+    list.as_array()
+        .map(|a| {
+            a.iter()
+                .filter_map(|v| v.as_str().map(str::to_string))
+                .collect()
+        })
+        .unwrap_or_default()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use serde_json::json;
+
+    fn names(v: &[&str]) -> Vec<String> {
+        v.iter().map(|s| s.to_string()).collect()
+    }
+
+    fn ids(c: &[CatalogEntry]) -> Vec<(&str, &str)> {
+        c.iter()
+            .map(|e| (e.id.as_str(), e.label.as_str()))
+            .collect()
+    }
+
+    #[test]
+    fn pairs_the_usual_naming_styles() {
+        let c = build(
+            &names(&[
+                "StyleHighWan2_2.safetensors",
+                "StyleLowWan2_2.safetensors",
+                "Motionv2.5-HIGH.safetensors",
+                "Motionv2.5-LOW.safetensors",
+                "Detail_High.safetensors",
+                "Detail_Low.safetensors",
+                "wan_effect_high_noise.safetensors",
+                "wan_effect_low_noise.safetensors",
+            ]),
+            &HashSet::new(),
+            &[],
+        );
+        assert_eq!(
+            ids(&c),
+            [
+                ("detail", "Detail"),
+                ("motionv2-5", "Motionv2.5"),
+                ("style-wan2-2", "Style Wan2 2"),
+                ("wan-effect-noise", "wan effect noise"),
+            ]
+        );
+        let style = c.iter().find(|e| e.id == "style-wan2-2").unwrap();
+        assert_eq!(style.high, "StyleHighWan2_2.safetensors");
+        assert_eq!(style.low, "StyleLowWan2_2.safetensors");
+    }
+
+    #[test]
+    fn unpaired_and_tokenless_files_are_left_out() {
+        let c = build(
+            &names(&[
+                "OnlyHigh_High.safetensors",
+                "distill_rank64_bf16.safetensors",
+                "slow_motion.safetensors",
+                "Glowing_low.safetensors",
+                "Glowing_high.safetensors",
+                "lower_body_high.safetensors",
+            ]),
+            &HashSet::new(),
+            &[],
+        );
+        // `slow`, `Glowing` and `lower` hold no token; Glowing pairs on its suffix.
+        assert_eq!(ids(&c), [("glowing", "Glowing")]);
+    }
+
+    #[test]
+    fn excludes_fixed_loras_and_substrings() {
+        let all = names(&[
+            "wan2.2_i2v_lightx2v_4steps_lora_v1_high_noise.safetensors",
+            "wan2.2_i2v_lightx2v_4steps_lora_v1_low_noise.safetensors",
+            "StyleHigh.safetensors",
+            "StyleLow.safetensors",
+            "SecretHigh.safetensors",
+            "SecretLow.safetensors",
+        ]);
+        let fixed: HashSet<String> = all[..2].iter().cloned().collect();
+        let c = build(&all, &fixed, &["secret".into()]);
+        assert_eq!(ids(&c), [("style", "Style")]);
+    }
+
+    #[test]
+    fn folders_keep_pairs_apart_and_ids_stay_unique() {
+        let c = build(
+            &names(&[
+                "a/StyleHigh.safetensors",
+                "a/StyleLow.safetensors",
+                "b\\StyleHigh.safetensors",
+                "b\\StyleLow.safetensors",
+                "a/StyleHigh.safetensors",
+            ]),
+            &HashSet::new(),
+            &[],
+        );
+        assert_eq!(c.len(), 2);
+        let mut got: Vec<_> = c.iter().map(|e| (e.id.as_str(), e.high.as_str())).collect();
+        got.sort();
+        assert_eq!(
+            got,
+            [
+                ("style", "a/StyleHigh.safetensors"),
+                ("style-2", "b\\StyleHigh.safetensors")
+            ]
+        );
+    }
+
+    #[test]
+    fn reads_both_object_info_shapes() {
+        let classic = json!({"LoraLoaderModelOnly": {"input": {"required": {
+            "lora_name": [["a.safetensors", "b.safetensors"]], "strength_model": ["FLOAT", {}]
+        }}}});
+        assert_eq!(
+            names_from_object_info(&classic),
+            names(&["a.safetensors", "b.safetensors"])
+        );
+        let combo = json!({"LoraLoaderModelOnly": {"input": {"required": {
+            "lora_name": ["COMBO", {"options": ["c.safetensors"]}]
+        }}}});
+        assert_eq!(names_from_object_info(&combo), names(&["c.safetensors"]));
+        assert!(names_from_object_info(&json!({})).is_empty());
+    }
+}

src/enhance/mod.rs

@@ -14,6 +14,7 @@
 pub mod comfy;
 pub mod config;
 pub mod handlers;
+pub mod lora_catalog;
 pub mod path_map;
 pub mod service;
 pub mod template;

src/enhance/service.rs

@@ -15,8 +15,9 @@ use serde::{Deserialize, Serialize};
 
 use super::comfy::{ApproveError, ComfyClient, ComfyError, HistoryEntry, Staged, SubmitError};
 use super::config::{EnhanceConfig, Loaded, PromptMode};
+use super::lora_catalog::{self, CatalogEntry};
 use super::path_map::PathMap;
-use super::template::{Template, random_seed};
+use super::template::{SlotPick, Template, random_seed};
 use crate::database::enhance_dao::{
     EnhanceJobDao, EnhanceJobRow, JobUpdate, RecentPrompt, STATUS_APPROVED, STATUS_EXPIRED,
     STATUS_FAILED, STATUS_QUEUED, STATUS_READY, STATUS_RUNNING, STATUS_UNAVAILABLE,
@@ -165,6 +166,27 @@ pub struct EnhanceService {
     idle: Mutex<IdleState>,
     /// Serialises approvals (rare; keeps "approve twice" simple).
     approve_lock: tokio::sync::Mutex<()>,
+    /// ComfyUI's LoRA files and when they were read (#220).
+    lora_names: Mutex<Option<(Instant, Vec<String>)>>,
+}
+
+/// How long ComfyUI's LoRA list is reused; a new download shows up after it.
+const LORA_LIST_TTL: Duration = Duration::from_secs(60);
+
+/// One `POST /enhance { slots }` entry: a catalog id and an optional scale.
+#[derive(Debug, Clone, PartialEq, serde::Deserialize)]
+pub struct SlotRequest {
+    pub lora: String,
+    #[serde(default)]
+    pub scale: Option<f64>,
+}
+
+/// A resolved pick, as stored on the job and returned in its view.
+#[derive(Debug, Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+pub struct SlotChoice {
+    pub lora: String,
+    pub label: String,
+    pub scale: f64,
 }
 
 impl EnhanceService {
@@ -233,9 +255,116 @@ impl EnhanceService {
             unreachable_since: Mutex::new(HashMap::new()),
             idle: Mutex::new(IdleState::default()),
             approve_lock: tokio::sync::Mutex::new(()),
+            lora_names: Mutex::new(None),
         })
     }
 
+    /// ComfyUI's LoRA files, cached for [`LORA_LIST_TTL`]. `fresh` re-reads
+    /// them (a submit naming an id the cache doesn't know). An unreachable
+    /// ComfyUI keeps the last list.
+    async fn lora_names(&self, fresh: bool) -> Vec<String> {
+        let Some(client) = &self.client else {
+            return Vec::new();
+        };
+        if !fresh
+            && let Some((at, names)) = &*self.lora_names.lock().unwrap()
+            && at.elapsed() < LORA_LIST_TTL
+        {
+            return names.clone();
+        }
+        match client.lora_names().await {
+            Ok(names) => {
+                *self.lora_names.lock().unwrap() = Some((Instant::now(), names.clone()));
+                names
+            }
+            Err(e) => {
+                warn!("enhance: couldn't list ComfyUI's LoRAs: {e}");
+                self.lora_names
+                    .lock()
+                    .unwrap()
+                    .as_ref()
+                    .map(|(_, n)| n.clone())
+                    .unwrap_or_default()
+            }
+        }
+    }
+
+    /// The LoRAs a template's slots can take; empty without slots.
+    pub async fn catalog(&self, template: &Template) -> Vec<CatalogEntry> {
+        if template.slot_count() == 0 {
+            return Vec::new();
+        }
+        let names = self.lora_names(false).await;
+        lora_catalog::build(
+            &names,
+            template.fixed_loras(),
+            &template.cfg.catalog.exclude,
+        )
+    }
+
+    /// Turn `slots` into picks for the template's slots, checking the ids
+    /// against the catalog (re-read once if one is unknown).
+    async fn resolve_slots(
+        &self,
+        template: &Template,
+        slots: &[SlotRequest],
+    ) -> Result<(Vec<SlotPick>, Vec<SlotChoice>), EnhanceError> {
+        if slots.is_empty() {
+            return Ok((Vec::new(), Vec::new()));
+        }
+        if slots.len() > template.slot_count() {
+            return Err(EnhanceError::BadRequest(if template.slot_count() == 0 {
+                "this template doesn't take picked LoRAs".to_string()
+            } else {
+                format!(
+                    "this template takes at most {} picked LoRAs",
+                    template.slot_count()
+                )
+            }));
+        }
+        let mut seen = std::collections::HashSet::new();
+        if let Some(dup) = slots.iter().find(|s| !seen.insert(s.lora.as_str())) {
+            return Err(EnhanceError::BadRequest(format!(
+                "LoRA {:?} is picked twice",
+                dup.lora
+            )));
+        }
+        let mut catalog = self.catalog(template).await;
+        if slots
+            .iter()
+            .any(|s| !catalog.iter().any(|e| e.id == s.lora))
+        {
+            let names = self.lora_names(true).await;
+            catalog = lora_catalog::build(
+                &names,
+                template.fixed_loras(),
+                &template.cfg.catalog.exclude,
+            );
+        }
+        let mut picks = Vec::new();
+        let mut choices = Vec::new();
+        for s in slots {
+            let Some(entry) = catalog.iter().find(|e| e.id == s.lora) else {
+                return Err(EnhanceError::BadRequest(format!(
+                    "no LoRA {:?} (it may have been removed from ComfyUI)",
+                    s.lora
+                )));
+            };
+            let scale = template.cfg.catalog.resolve(s.scale);
+            picks.push(SlotPick {
+                high: entry.high.clone(),
+                low: entry.low.clone(),
+                scale,
+            });
+            choices.push(SlotChoice {
+                lora: entry.id.clone(),
+                label: entry.label.clone(),
+                scale,
+            });
+        }
+        Ok((picks, choices))
+    }
+
     pub fn is_configured(&self) -> bool {
         self.client.is_some()
     }
@@ -293,6 +422,7 @@ impl EnhanceService {
         prompt: Option<&str>,
         reference: Option<&SourceFile>,
         loras: &std::collections::BTreeMap<String, super::config::LoraRequest>,
+        slots: &[SlotRequest],
     ) -> Result<EnhanceJobRow, EnhanceError> {
         let Some(client) = &self.client else {
             return Err(EnhanceError::Disabled);
@@ -319,12 +449,14 @@ impl EnhanceService {
             ),
             None => None,
         };
+        let (picks, choices) = self.resolve_slots(template, slots).await?;
         let filled = template
             .fill(
                 &source,
                 prompt,
                 reference_path.as_deref(),
                 loras,
+                &picks,
                 &mut random_seed,
             )
             .map_err(|e| EnhanceError::BadRequest(e.0))?;
@@ -374,6 +506,8 @@ impl EnhanceService {
             run_ms: None,
             loras: (!filled.loras.is_empty())
                 .then(|| serde_json::to_string(&filled.loras).unwrap_or_default()),
+            lora_slots: (!choices.is_empty())
+                .then(|| serde_json::to_string(&choices).unwrap_or_default()),
         };
         self.dao
             .lock()

src/enhance/template.rs

@@ -18,6 +18,9 @@ pub const TITLE_PROMPT: &str = "imageapi:prompt";
 pub const TITLE_REFERENCE: &str = "imageapi:reference";
 /// `imageapi:lora:<id>`: a LoRA loader the app can switch off (#218).
 pub const TITLE_LORA_PREFIX: &str = "imageapi:lora:";
+/// `imageapi:lora-slot:<n>:high|low`: a LoRA loader the app fills with a
+/// LoRA picked from the catalog (#220); unused slots run at strength 0.
+pub const TITLE_SLOT_PREFIX: &str = "imageapi:lora-slot:";
 
 /// LoRA loader inputs a switch scales (0 = off). `strength_model` is
 /// required (LoraLoaderModelOnly); `strength_clip` is scaled when present
@@ -61,6 +64,11 @@ pub struct Template {
     reference_id: Option<String>,
     /// Declared LoRA switches that have nodes, in `enhance.toml` order.
     loras: Vec<LoraSwitch>,
+    /// Pickable-LoRA slots, by slot number.
+    slots: Vec<Slot>,
+    /// `lora_name`s the workflow loads outside the slots (lightx2v, switch
+    /// LoRAs): never offered in the catalog.
+    fixed_loras: std::collections::HashSet<String>,
     /// Image or video, from the save node's class.
     pub output: OutputKind,
     /// Startup warnings (stray output nodes).
@@ -75,6 +83,22 @@ struct LoraSwitch {
     nodes: Vec<(String, Vec<(&'static str, f64)>)>,
 }
 
+/// One pickable-LoRA slot: its high- and low-noise loader nodes, each with
+/// its exported strengths (a pick's scale multiplies them).
+#[derive(Debug, Clone)]
+struct Slot {
+    high: Vec<(String, Vec<(&'static str, f64)>)>,
+    low: Vec<(String, Vec<(&'static str, f64)>)>,
+}
+
+/// A LoRA picked for one slot: its two files and the resolved scale.
+#[derive(Debug, Clone, PartialEq)]
+pub struct SlotPick {
+    pub high: String,
+    pub low: String,
+    pub scale: f64,
+}
+
 /// Why a request can't be turned into a ComfyUI prompt. The message is for
 /// the caller, so it names the problem in the user's terms.
 #[derive(Debug, Clone, PartialEq, Eq)]
@@ -227,6 +251,69 @@ impl Template {
             ));
         }
 
+        // Pickable-LoRA slots, and the LoRAs loaded outside them.
+        let exported = |id: &str| -> Vec<(&'static str, f64)> {
+            let inputs = inputs_of(&workflow, id);
+            LORA_STRENGTH_INPUTS
+                .iter()
+                .filter_map(|k| inputs.get(*k).and_then(Value::as_f64).map(|v| (*k, v)))
+                .collect()
+        };
+        let mut slot_map: BTreeMap<u32, Slot> = BTreeMap::new();
+        let mut fixed_loras = std::collections::HashSet::new();
+        for (id, node) in &workflow {
+            let Some(rest) = title_of(node).and_then(|t| t.strip_prefix(TITLE_SLOT_PREFIX)) else {
+                if let Some(name) = inputs_of(&workflow, id)
+                    .get("lora_name")
+                    .and_then(Value::as_str)
+                {
+                    fixed_loras.insert(name.to_string());
+                }
+                continue;
+            };
+            let title = format!("{TITLE_SLOT_PREFIX}{rest}");
+            let (n, role) = rest
+                .split_once(':')
+                .and_then(|(n, role)| Some((n.parse::<u32>().ok().filter(|n| *n > 0)?, role)))
+                .ok_or_else(|| {
+                    anyhow::anyhow!(
+                        "node {id} titled {title:?}: expected {TITLE_SLOT_PREFIX}<n>:high or :low (n from 1)"
+                    )
+                })?;
+            let inputs = inputs_of(&workflow, id);
+            if !inputs.get("lora_name").is_some_and(Value::is_string)
+                || !inputs.get("strength_model").is_some_and(Value::is_number)
+            {
+                bail!(
+                    "node {id} titled {title:?} needs a lora_name and a numeric strength_model \
+                     (use a LoraLoaderModelOnly or LoraLoader)"
+                );
+            }
+            let slot = slot_map.entry(n).or_insert(Slot {
+                high: Vec::new(),
+                low: Vec::new(),
+            });
+            match role {
+                "high" => slot.high.push((id.clone(), exported(id))),
+                "low" => slot.low.push((id.clone(), exported(id))),
+                _ => bail!("node {id} titled {title:?}: the role must be high or low"),
+            }
+        }
+        for (n, slot) in &slot_map {
+            if slot.high.is_empty() || slot.low.is_empty() {
+                bail!("LoRA slot {n} needs both a :high and a :low node");
+            }
+        }
+        if let Some((last, _)) = slot_map.last_key_value()
+            && *last as usize != slot_map.len()
+        {
+            bail!(
+                "LoRA slots must be numbered 1..{} without gaps",
+                slot_map.len()
+            );
+        }
+        let slots: Vec<Slot> = slot_map.into_values().collect();
+
         for (id, node) in &workflow {
             let class = node["class_type"].as_str().unwrap_or_default();
             if STRAY_OUTPUT_CLASSES.contains(&class) {
@@ -248,6 +335,8 @@ impl Template {
             prompt,
             reference_id,
             loras,
+            slots,
+            fixed_loras,
             output,
             warnings,
         })
@@ -265,6 +354,16 @@ impl Template {
         self.cfg.prompt_mode == PromptMode::Replace
     }
 
+    /// How many pickable-LoRA slots the workflow has (#220).
+    pub fn slot_count(&self) -> usize {
+        self.slots.len()
+    }
+
+    /// `lora_name`s loaded outside the slots; kept out of the catalog.
+    pub fn fixed_loras(&self) -> &std::collections::HashSet<String> {
+        &self.fixed_loras
+    }
+
     /// The LoRA switches clients can offer (declared and present in the
     /// workflow), in `enhance.toml` order.
     pub fn lora_switches(&self) -> impl Iterator<Item = &LoraConfig> {
@@ -288,8 +387,19 @@ impl Template {
         prompt: Option<&str>,
         reference: Option<&str>,
         loras: &BTreeMap<String, LoraRequest>,
+        picks: &[SlotPick],
         next_seed: &mut dyn FnMut() -> u64,
     ) -> Result<Filled, FillError> {
+        if picks.len() > self.slots.len() {
+            return Err(FillError(if self.slots.is_empty() {
+                "this template doesn't take picked LoRAs".to_string()
+            } else {
+                format!(
+                    "this template takes at most {} picked LoRAs",
+                    self.slots.len()
+                )
+            }));
+        }
         if let Some(unknown) = loras
             .keys()
             .find(|id| !self.loras.iter().any(|l| &l.cfg.id == *id))
@@ -362,6 +472,26 @@ impl Template {
             }
         }
 
+        // Picked LoRAs fill the slots in order; the rest run at 0 (their
+        // exported lora_name stays, a file ComfyUI knows).
+        for (i, slot) in self.slots.iter().enumerate() {
+            let pick = picks.get(i).filter(|p| p.scale > 0.0);
+            for (nodes, file) in [
+                (&slot.high, pick.map(|p| p.high.as_str())),
+                (&slot.low, pick.map(|p| p.low.as_str())),
+            ] {
+                for (id, exported) in nodes {
+                    if let Some(file) = file {
+                        set_input(&mut wf, id, "lora_name", json!(file));
+                    }
+                    let scale = pick.map_or(0.0, |p| p.scale);
+                    for (input, value) in exported {
+                        set_input(&mut wf, id, input, json!(value * scale));
+                    }
+                }
+            }
+        }
+
         for node in wf.values_mut() {
             let Some(inputs) = node.get_mut("inputs").and_then(Value::as_object_mut) else {
                 continue;
@@ -435,6 +565,17 @@ mod tests {
     /// The Animate template plus a Style pair titled `imageapi:lora:style`
     /// (nodes 50 high, 51 low).
     pub const ANIMATE_LORAS: &str = include_str!("../../tests/fixtures/enhance/animate_loras.json");
+    /// ANIMATE_LORAS plus two pickable slots chained after the switch:
+    /// 60/61 (slot 1 high/low), 62/63 (slot 2).
+    pub const ANIMATE_SLOTS: &str = include_str!("../../tests/fixtures/enhance/animate_slots.json");
+
+    fn pick(name: &str, scale: f64) -> SlotPick {
+        SlotPick {
+            high: format!("{name}_high.safetensors"),
+            low: format!("{name}_low.safetensors"),
+            scale,
+        }
+    }
 
     fn lora(id: &str, default: bool) -> LoraConfig {
         LoraConfig {
@@ -475,6 +616,7 @@ mod tests {
             prompt_join: " ".into(),
             output_megapixels: 1.0,
             loras: Vec::new(),
+            catalog: Default::default(),
         }
     }
 
@@ -547,6 +689,7 @@ mod tests {
                 Some("more"),
                 None,
                 &BTreeMap::new(),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -566,7 +709,7 @@ mod tests {
     fn fill_sets_path_forces_approval_and_randomises_every_seed() {
         let t = load(RESTORE, PromptMode::Append).unwrap();
         let f = t
-            .fill("Z:\\p\\a.jpg", None, None, &none(), &mut seeds())
+            .fill("Z:\\p\\a.jpg", None, None, &none(), &[], &mut seeds())
             .unwrap();
         assert_eq!(input(&f.prompt, "37", "path"), "Z:\\p\\a.jpg");
         assert_eq!(input(&f.prompt, "36", "require_approval"), true);
@@ -579,8 +722,8 @@ mod tests {
         assert_ne!(a, 774744764437710);
         // Two fills with a real RNG differ.
         let mut rng = random_seed;
-        let x = t.fill("p", None, None, &none(), &mut rng).unwrap();
+        let x = t.fill("p", None, None, &none(), &[], &mut rng).unwrap();
-        let y = t.fill("p", None, None, &none(), &mut rng).unwrap();
+        let y = t.fill("p", None, None, &none(), &[], &mut rng).unwrap();
         assert_ne!(input(&x.prompt, "5", "seed"), input(&y.prompt, "5", "seed"));
     }
 
@@ -606,7 +749,9 @@ mod tests {
         // SeedVR2VideoUpscaler rejects seeds above 2^32 - 1 at validation.
         let t = load(RESTORE, PromptMode::Append).unwrap();
         for _ in 0..200 {
-            let f = t.fill("p", None, None, &none(), &mut random_seed).unwrap();
+            let f = t
+                .fill("p", None, None, &none(), &[], &mut random_seed)
+                .unwrap();
             assert!(input(&f.prompt, "5", "seed").as_u64().unwrap() <= u64::from(u32::MAX));
         }
     }
@@ -615,7 +760,7 @@ mod tests {
     fn force_approval_even_if_the_export_had_it_off() {
         let off = RESTORE.replace("\"require_approval\": true", "\"require_approval\": false");
         let t = load(&off, PromptMode::Append).unwrap();
-        let f = t.fill("p", None, None, &none(), &mut seeds()).unwrap();
+        let f = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
         assert_eq!(input(&f.prompt, "36", "require_approval"), true);
     }
 
@@ -633,6 +778,7 @@ mod tests {
                 Some("  warmer  "),
                 None,
                 &BTreeMap::new(),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -641,10 +787,10 @@ mod tests {
             "Increase the clarity\n\nAdditional instructions: warmer"
         );
         let f = t
-            .fill("p", Some("   "), None, &none(), &mut seeds())
+            .fill("p", Some("   "), None, &none(), &[], &mut seeds())
             .unwrap();
         assert_eq!(input(&f.prompt, "13", "value"), base);
-        let f = t.fill("p", None, None, &none(), &mut seeds()).unwrap();
+        let f = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
         assert_eq!(input(&f.prompt, "13", "value"), base);
     }
 
@@ -657,6 +803,7 @@ mod tests {
                 Some("Make it warmer."),
                 None,
                 &BTreeMap::new(),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -667,10 +814,12 @@ mod tests {
     #[test]
     fn replace_mode_requires_and_uses_the_instruction() {
         let t = load(EDIT, PromptMode::Replace).unwrap();
-        let err = t.fill("p", None, None, &none(), &mut seeds()).unwrap_err();
+        let err = t
+            .fill("p", None, None, &none(), &[], &mut seeds())
+            .unwrap_err();
         assert!(err.0.contains("instruction"));
         assert!(
-            t.fill("p", Some("  "), None, &none(), &mut seeds())
+            t.fill("p", Some("  "), None, &none(), &[], &mut seeds())
                 .is_err()
         );
         let f = t
@@ -679,6 +828,7 @@ mod tests {
                 Some("make it black and white"),
                 None,
                 &BTreeMap::new(),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -692,13 +842,16 @@ mod tests {
         // 14 links to 13; drop that link so the graph stays plausible.
         v["14"]["inputs"].as_object_mut().unwrap().remove("prompt");
         let t = Template::from_value(cfg("t", PromptMode::Append), v).unwrap();
-        assert!(t.fill("p", Some("x"), None, &none(), &mut seeds()).is_err());
+        assert!(
-        assert!(t.fill("p", None, None, &none(), &mut seeds()).is_ok());
+            t.fill("p", Some("x"), None, &none(), &[], &mut seeds())
+                .is_err()
+        );
+        assert!(t.fill("p", None, None, &none(), &[], &mut seeds()).is_ok());
 
         let restore = load(RESTORE, PromptMode::Append).unwrap();
         assert!(
             restore
-                .fill("p", None, Some("r"), &none(), &mut seeds())
+                .fill("p", None, Some("r"), &none(), &[], &mut seeds())
                 .is_err()
         );
     }
@@ -712,6 +865,7 @@ mod tests {
                 Some("x"),
                 Some("Z:\\ref.jpg"),
                 &BTreeMap::new(),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -724,7 +878,7 @@ mod tests {
     fn no_reference_removes_the_node_and_every_link_to_it() {
         let t = load(EDIT, PromptMode::Replace).unwrap();
         let f = t
-            .fill("src", Some("x"), None, &none(), &mut seeds())
+            .fill("src", Some("x"), None, &none(), &[], &mut seeds())
             .unwrap();
         assert!(f.dropped_reference);
         let wf = f.prompt.as_object().unwrap();
@@ -751,7 +905,7 @@ mod tests {
         assert!(t.warnings.is_empty(), "{:?}", t.warnings);
 
         // Default off: both the high and the low node go to 0.
-        let off = t.fill("p", None, None, &none(), &mut seeds()).unwrap();
+        let off = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
         assert_eq!(off.loras, scales(&[("style", 0.0)]));
         for id in ["50", "51"] {
             assert_eq!(input(&off.prompt, id, "strength_model"), &json!(0.0));
@@ -767,6 +921,7 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("style", LoraRequest::On(true))]),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -791,6 +946,7 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("style", LoraRequest::Scale(0.5))]),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -805,6 +961,7 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("style", LoraRequest::Scale(9.0))]),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -815,6 +972,7 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("style", LoraRequest::Scale(0.0))]),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -826,7 +984,7 @@ mod tests {
         let mut l = lora("style", true);
         l.strength = 0.7;
         let t = load_with_loras(ANIMATE_LORAS, vec![l]).unwrap();
-        let f = t.fill("p", None, None, &none(), &mut seeds()).unwrap();
+        let f = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
         assert_eq!(f.loras, scales(&[("style", 0.7)]));
         assert_eq!(input(&f.prompt, "50", "strength_model"), &json!(0.7));
 
@@ -836,6 +994,7 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("nope", LoraRequest::On(true))]),
+                &[],
                 &mut seeds(),
             )
             .unwrap_err();
@@ -850,7 +1009,7 @@ mod tests {
         let mut c = cfg("animate", PromptMode::Append);
         c.loras = vec![lora("style", false)];
         let t = Template::from_value(c, v).unwrap();
-        let off = t.fill("p", None, None, &none(), &mut seeds()).unwrap();
+        let off = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
         assert_eq!(input(&off.prompt, "50", "strength_clip"), &json!(0.0));
         let half = t
             .fill(
@@ -858,6 +1017,7 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("style", LoraRequest::Scale(0.5))]),
+                &[],
                 &mut seeds(),
             )
             .unwrap();
@@ -874,7 +1034,7 @@ mod tests {
             "{:?}",
             t.warnings
         );
-        let f = t.fill("p", None, None, &none(), &mut seeds()).unwrap();
+        let f = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
         assert!(f.loras.is_empty());
         assert_eq!(input(&f.prompt, "50", "strength_model"), &json!(1.0));
         assert!(
@@ -883,7 +1043,8 @@ mod tests {
                 None,
                 None,
                 &reqs(&[("style", LoraRequest::On(false))]),
-                &mut seeds()
+                &[],
+                &mut seeds(),
             )
             .is_err()
         );
@@ -917,4 +1078,106 @@ mod tests {
             .to_string();
         assert!(err.contains("strength_model"), "{err}");
     }
+
+    #[test]
+    fn slots_are_found_and_fixed_loras_listed() {
+        let t = load(ANIMATE_SLOTS, PromptMode::Append).unwrap();
+        assert_eq!(t.slot_count(), 2);
+        let mut fixed: Vec<_> = t.fixed_loras().iter().cloned().collect();
+        fixed.sort();
+        assert_eq!(
+            fixed,
+            [
+                "example_style_high.safetensors",
+                "example_style_low.safetensors",
+                "wan2.2_i2v_lightx2v_4steps_lora_v1_high_noise.safetensors",
+                "wan2.2_i2v_lightx2v_4steps_lora_v1_low_noise.safetensors",
+            ]
+        );
+        assert_eq!(
+            load(ANIMATE_LORAS, PromptMode::Append)
+                .unwrap()
+                .slot_count(),
+            0
+        );
+    }
+
+    #[test]
+    fn picks_fill_slots_in_order_and_unused_slots_run_at_zero() {
+        let t = load(ANIMATE_SLOTS, PromptMode::Append).unwrap();
+        let f = t
+            .fill(
+                "p",
+                None,
+                None,
+                &none(),
+                &[pick("motion", 0.5)],
+                &mut seeds(),
+            )
+            .unwrap();
+        assert_eq!(
+            input(&f.prompt, "60", "lora_name"),
+            &json!("motion_high.safetensors")
+        );
+        assert_eq!(
+            input(&f.prompt, "61", "lora_name"),
+            &json!("motion_low.safetensors")
+        );
+        assert_eq!(input(&f.prompt, "60", "strength_model"), &json!(0.5));
+        assert_eq!(input(&f.prompt, "61", "strength_model"), &json!(0.5));
+        // Slot 2 unused: its exported file stays, at strength 0.
+        assert_eq!(
+            input(&f.prompt, "62", "lora_name"),
+            &json!("example_slot_high.safetensors")
+        );
+        assert_eq!(input(&f.prompt, "62", "strength_model"), &json!(0.0));
+        assert_eq!(input(&f.prompt, "63", "strength_model"), &json!(0.0));
+        // The chain isn't rewired.
+        assert_eq!(input(&f.prompt, "14", "model"), &json!(["62", 0]));
+
+        // No picks at all: every slot off.
+        let f = t.fill("p", None, None, &none(), &[], &mut seeds()).unwrap();
+        assert_eq!(input(&f.prompt, "60", "strength_model"), &json!(0.0));
+
+        let err = t
+            .fill(
+                "p",
+                None,
+                None,
+                &none(),
+                &[pick("a", 1.0), pick("b", 1.0), pick("c", 1.0)],
+                &mut seeds(),
+            )
+            .unwrap_err();
+        assert!(err.0.contains("at most 2"), "{err}");
+        let plain = load(ANIMATE_LORAS, PromptMode::Append).unwrap();
+        assert!(
+            plain
+                .fill("p", None, None, &none(), &[pick("a", 1.0)], &mut seeds())
+                .is_err()
+        );
+    }
+
+    #[test]
+    fn malformed_slots_are_rejected() {
+        let only_high = ANIMATE_SLOTS.replace("imageapi:lora-slot:2:low", "something else");
+        let err = load(&only_high, PromptMode::Append)
+            .unwrap_err()
+            .to_string();
+        assert!(err.contains("slot 2 needs both"), "{err}");
+        let gap = ANIMATE_SLOTS
+            .replace("imageapi:lora-slot:2:high", "imageapi:lora-slot:3:high")
+            .replace("imageapi:lora-slot:2:low", "imageapi:lora-slot:3:low");
+        let err = load(&gap, PromptMode::Append).unwrap_err().to_string();
+        assert!(err.contains("without gaps"), "{err}");
+        let role = ANIMATE_SLOTS.replace("imageapi:lora-slot:1:high", "imageapi:lora-slot:1:mid");
+        assert!(
+            load(&role, PromptMode::Append)
+                .unwrap_err()
+                .to_string()
+                .contains("high or low")
+        );
+        let no_n = ANIMATE_SLOTS.replace("imageapi:lora-slot:1:high", "imageapi:lora-slot:x:high");
+        assert!(load(&no_n, PromptMode::Append).is_err());
+    }
 }

tests/fixtures/enhance/animate_slots.json

@@ -0,0 +1,404 @@
+{
+  "1": {
+    "class_type": "ImageApiLoadImageFromPath",
+    "_meta": {
+      "title": "imageapi:source"
+    },
+    "inputs": {
+      "path": ""
+    }
+  },
+  "2": {
+    "class_type": "ImageApiTargetSize",
+    "_meta": {
+      "title": "Target Size (~0.92 MP, keeps aspect)"
+    },
+    "inputs": {
+      "image": [
+        "1",
+        0
+      ],
+      "max_megapixels": 0.92,
+      "min_megapixels": 0.92,
+      "multiple_of": 16
+    }
+  },
+  "10": {
+    "class_type": "UNETLoader",
+    "_meta": {
+      "title": "Wan 2.2 i2v high noise"
+    },
+    "inputs": {
+      "unet_name": "wan2.2_i2v_high_noise_14B_fp8_scaled.safetensors",
+      "weight_dtype": "default"
+    }
+  },
+  "11": {
+    "class_type": "UNETLoader",
+    "_meta": {
+      "title": "Wan 2.2 i2v low noise"
+    },
+    "inputs": {
+      "unet_name": "wan2.2_i2v_low_noise_14B_fp8_scaled.safetensors",
+      "weight_dtype": "default"
+    }
+  },
+  "12": {
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "lightx2v 4-step (high)"
+    },
+    "inputs": {
+      "model": [
+        "10",
+        0
+      ],
+      "lora_name": "wan2.2_i2v_lightx2v_4steps_lora_v1_high_noise.safetensors",
+      "strength_model": 1.0
+    }
+  },
+  "13": {
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "lightx2v 4-step (low)"
+    },
+    "inputs": {
+      "model": [
+        "11",
+        0
+      ],
+      "lora_name": "wan2.2_i2v_lightx2v_4steps_lora_v1_low_noise.safetensors",
+      "strength_model": 1.0
+    }
+  },
+  "14": {
+    "class_type": "ModelSamplingSD3",
+    "_meta": {
+      "title": "Shift (high)"
+    },
+    "inputs": {
+      "model": [
+        "62",
+        0
+      ],
+      "shift": 5.0
+    }
+  },
+  "15": {
+    "class_type": "ModelSamplingSD3",
+    "_meta": {
+      "title": "Shift (low)"
+    },
+    "inputs": {
+      "model": [
+        "63",
+        0
+      ],
+      "shift": 5.0
+    }
+  },
+  "40": {
+    "class_type": "PathchSageAttentionKJ",
+    "_meta": {
+      "title": "Sage attention (high)"
+    },
+    "inputs": {
+      "model": [
+        "14",
+        0
+      ],
+      "sage_attention": "auto"
+    }
+  },
+  "41": {
+    "class_type": "PathchSageAttentionKJ",
+    "_meta": {
+      "title": "Sage attention (low)"
+    },
+    "inputs": {
+      "model": [
+        "15",
+        0
+      ],
+      "sage_attention": "auto"
+    }
+  },
+  "16": {
+    "class_type": "CLIPLoader",
+    "_meta": {
+      "title": "Load CLIP"
+    },
+    "inputs": {
+      "clip_name": "umt5_xxl_fp8_e4m3fn_scaled.safetensors",
+      "type": "wan",
+      "device": "default"
+    }
+  },
+  "17": {
+    "class_type": "CLIPTextEncode",
+    "_meta": {
+      "title": "imageapi:prompt"
+    },
+    "inputs": {
+      "clip": [
+        "16",
+        0
+      ],
+      "text": "natural, lifelike motion with a slow, gentle camera movement, realistic, cinematic"
+    }
+  },
+  "18": {
+    "class_type": "CLIPTextEncode",
+    "_meta": {
+      "title": "Negative"
+    },
+    "inputs": {
+      "clip": [
+        "16",
+        0
+      ],
+      "text": "static, frozen, blurry, low quality, distorted, warped faces, morphing, flicker, watermark, text"
+    }
+  },
+  "19": {
+    "class_type": "VAELoader",
+    "_meta": {
+      "title": "Load VAE"
+    },
+    "inputs": {
+      "vae_name": "wan_2.1_vae.safetensors"
+    }
+  },
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+    "class_type": "WanImageToVideo",
+    "_meta": {
+      "title": "Wan Image To Video (81 frames)"
+    },
+    "inputs": {
+      "positive": [
+        "17",
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+      "negative": [
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+      "height": [
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+      "length": 81,
+      "batch_size": 1
+    }
+  },
+  "22": {
+    "class_type": "KSamplerAdvanced",
+    "_meta": {
+      "title": "Sampler (high, steps 0-2)"
+    },
+    "inputs": {
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+        0
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+      "negative": [
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+      "sampler_name": "euler",
+      "scheduler": "simple",
+      "start_at_step": 0,
+      "end_at_step": 2,
+      "return_with_leftover_noise": "enable"
+    }
+  },
+  "23": {
+    "class_type": "KSamplerAdvanced",
+    "_meta": {
+      "title": "Sampler (low, steps 2-4)"
+    },
+    "inputs": {
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+      "sampler_name": "euler",
+      "scheduler": "simple",
+      "start_at_step": 2,
+      "end_at_step": 10000,
+      "return_with_leftover_noise": "disable"
+    }
+  },
+  "24": {
+    "class_type": "VAEDecode",
+    "_meta": {
+      "title": "VAE Decode"
+    },
+    "inputs": {
+      "samples": [
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+        0
+      ],
+      "vae": [
+        "19",
+        0
+      ]
+    }
+  },
+  "25": {
+    "class_type": "CreateVideo",
+    "_meta": {
+      "title": "Create Video (16 fps)"
+    },
+    "inputs": {
+      "images": [
+        "24",
+        0
+      ],
+      "fps": 16.0
+    }
+  },
+  "36": {
+    "class_type": "ImageApiSaveVideoVersion",
+    "_meta": {
+      "title": "imageapi:save"
+    },
+    "inputs": {
+      "video": [
+        "25",
+        0
+      ],
+      "source": [
+        "1",
+        1
+      ],
+      "kind": "animated",
+      "subfolder": "aiedits",
+      "require_approval": true
+    }
+  },
+  "50": {
+    "inputs": {
+      "lora_name": "example_style_high.safetensors",
+      "strength_model": 1.0,
+      "model": [
+        "12",
+        0
+      ]
+    },
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "imageapi:lora:style"
+    }
+  },
+  "51": {
+    "inputs": {
+      "lora_name": "example_style_low.safetensors",
+      "strength_model": 1.0,
+      "model": [
+        "13",
+        0
+      ]
+    },
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "imageapi:lora:style"
+    }
+  },
+  "60": {
+    "inputs": {
+      "lora_name": "example_slot_high.safetensors",
+      "strength_model": 1.0,
+      "model": [
+        "50",
+        0
+      ]
+    },
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "imageapi:lora-slot:1:high"
+    }
+  },
+  "61": {
+    "inputs": {
+      "lora_name": "example_slot_low.safetensors",
+      "strength_model": 1.0,
+      "model": [
+        "51",
+        0
+      ]
+    },
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "imageapi:lora-slot:1:low"
+    }
+  },
+  "62": {
+    "inputs": {
+      "lora_name": "example_slot_high.safetensors",
+      "strength_model": 1.0,
+      "model": [
+        "60",
+        0
+      ]
+    },
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "imageapi:lora-slot:2:high"
+    }
+  },
+  "63": {
+    "inputs": {
+      "lora_name": "example_slot_low.safetensors",
+      "strength_model": 1.0,
+      "model": [
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+        0
+      ]
+    },
+    "class_type": "LoraLoaderModelOnly",
+    "_meta": {
+      "title": "imageapi:lora-slot:2:low"
+    }
+  }
+}