diff --git a/docs/asset-engine/CATALOG-CONTRACT.md b/docs/asset-engine/CATALOG-CONTRACT.md
index 2e35f69..ca31fb5 100644
--- a/docs/asset-engine/CATALOG-CONTRACT.md
+++ b/docs/asset-engine/CATALOG-CONTRACT.md
@@ -37,7 +37,16 @@ reproducibility_audit: [Audit]     # one entry per service
 | `description`     | string                                    | no       | one-paragraph summary |
 | `category`        | enum: tts, asr, sfx, music, image         | yes      | groups in pickers |
 | `version`         | int                                       | yes      | per-service schema version; bump on field changes |
-| `status`          | enum: ready, catalog-deferred, experimental | no     | default: ready |
+| `status`          | enum: ready, catalog-deferred, experimental, down | no | default: ready |
+
+**Status semantics:**
+
+| value | meaning | picker behavior |
+|---|---|---|
+| `ready` | Deployed, exercised, current default | clickable, primary surface |
+| `experimental` | Deployed, may break under unusual params or while a custom renderer is being built (e.g. kokoro-captioned pre-renderer) | clickable, surfaced with a "experimental" tag |
+| `catalog-deferred` | By-design out of scope this catalog version (e.g. ComfyUI requires per-asset workflow templates the catalog can't express today) | greyed, non-clickable, "deferred" tooltip |
+| `down` | *Temporarily* unreachable on the host fleet — deployment gap, scheduled maintenance, container reaped, etc. Distinct from `catalog-deferred` because the intent is to flip back to `ready` once redeployed; the catalog row still describes a real intended service. | greyed, non-clickable, "service down" tooltip |
 | `host`            | string (host alias)                       | yes      | which fleet host serves this |
 | `endpoint`        | URL                                       | yes      | absolute URL of the inference endpoint |
 | `method`          | string                                    | yes      | HTTP method (POST common) |
@@ -97,6 +106,7 @@ Same change-management as field types.
 | Add a non-required field to an existing service | service `version:` |
 | Add an optional key to the `response:` schema (e.g. audio_field, timestamps_field) | nothing — additive, backward-compatible |
 | Add an optional key to a Field (e.g. section) or to Service (e.g. section_groups) | nothing — additive, backward-compatible |
+| Extend an existing enum (StatusT, FieldTypeT, ResponseTypeT, CategoryT) with a non-conflicting new value, with the consumer updated in the same coordinated change | nothing — older consumers don't encounter the new value; updated consumers parse it correctly |
 | Change a field's type, range, or default     | service `version:`    |
 | Remove a service                             | service `version:` (sentinel: removed=true), then drop in next catalog_version bump |
 | Add a new entry to the field-type vocabulary | `catalog_version:`    |
diff --git a/docs/asset-engine/services.schema.json b/docs/asset-engine/services.schema.json
index 3feb093..4570cb9 100644
--- a/docs/asset-engine/services.schema.json
+++ b/docs/asset-engine/services.schema.json
@@ -513,7 +513,8 @@
           "enum": [
             "ready",
             "catalog-deferred",
-            "experimental"
+            "experimental",
+            "down"
           ],
           "title": "Status",
           "type": "string"
diff --git a/docs/asset-engine/services.yaml b/docs/asset-engine/services.yaml
index 906cf6a..9fee5bd 100644
--- a/docs/asset-engine/services.yaml
+++ b/docs/asset-engine/services.yaml
@@ -199,6 +199,7 @@ services:
       Zero-shot voice cloning from ~5s reference. 9 paralinguistic tags.
     category: tts
     version: 1
+    status: down
     host: irv-ml1
     endpoint: http://10.100.79.3:8196/v1/audio/speech
     method: POST
@@ -258,6 +259,7 @@ services:
       (timbre from one reference, emotion from another). 22050 Hz fixed output.
     category: tts
     version: 1
+    status: down
     host: irv-ml1
     endpoint: http://10.100.79.3:8192/v1/audio/speech
     method: POST
@@ -333,6 +335,7 @@ services:
       instruction-driven emotion, voice cloning.
     category: tts
     version: 1
+    status: down
     host: irv-ml1
     endpoint: http://10.100.79.3:8191/v1/audio/speech
     method: POST
@@ -389,6 +392,7 @@ services:
       English prosody not ElevenLabs-grade — use Qwen3-TTS for English.
     category: tts
     version: 1
+    status: down
     host: irv-ml1
     endpoint: http://10.100.79.3:8190/v1/audio/speech
     method: POST
@@ -497,6 +501,7 @@ services:
       + Moshi dialogue framework. OpenAI-compat HTTP wrapper over Rust streaming core.
     category: tts
     version: 1
+    status: down
     host: irv-ml1
     endpoint: http://10.100.79.3:8198/v1/audio/speech
     method: POST
@@ -629,6 +634,7 @@ services:
       8 languages, 70ms model latency, 9.7× realtime. Served via vLLM-Omni.
     category: tts
     version: 1
+    status: down
     host: irv-ml1
     endpoint: http://10.100.79.3:8197/v1/audio/speech
     method: POST