Use /respite/ prefix to avoid Gradio proxy conflict

app.py

@@ -7,7 +7,6 @@ import torch
 import torchaudio
 import gradio as gr
 import spaces
-from fastapi import FastAPI
 from fastapi.responses import JSONResponse
 from einops import rearrange
 from huggingface_hub import login
@@ -79,11 +78,11 @@ API_SPECS = {
     "name": "Respite API",
     "version": "1.0.0",
     "description": "General-purpose AI API server with audio generation capabilities.",
-    "base_path": "/api",
+    "base_path": "/respite",
     "authentication": "none",
     "content_types": ["application/json", "audio/wav"],
-    "resources_endpoint": "/api/resources",
-    "specs_endpoint": "/api/specs",
+    "resources_endpoint": "/respite/resources",
+    "specs_endpoint": "/respite/specs",
     "limits": {
         "max_concurrent_requests": 1,
         "max_queue_size": 4,
@@ -105,23 +104,6 @@ def _get_runtime_specs():
     }
 
 
-# ---------------------------------------------------------------------------
-# FastAPI application with discovery routes
-# ---------------------------------------------------------------------------
-
-api = FastAPI(title=API_SPECS["name"], version=API_SPECS["version"])
-
-
-@api.get("/api/resources")
-def resources():
-    return JSONResponse({"resources": API_RESOURCES})
-
-
-@api.get("/api/specs")
-def specs():
-    return JSONResponse({**API_SPECS, "runtime": _get_runtime_specs()})
-
-
 # ---------------------------------------------------------------------------
 # Model cache
 # ---------------------------------------------------------------------------
@@ -219,21 +201,42 @@ with gr.Blocks(title="Respite API") as demo:
 
 
 # ---------------------------------------------------------------------------
-# Patch launch() so the HF Spaces runner picks up our FastAPI routes.
+# API discovery endpoints
 #
-# The Gradio SDK runner calls demo.launch() directly, which normally creates
-# its own FastAPI app. By intercepting that call we inject our routes so
-# /api/resources and /api/specs are served alongside the Gradio UI.
+# Use /respite/ prefix instead of /api/ to avoid collision with Gradio's
+# internal /api proxy which intercepts all /api/* requests in the
+# sdk:gradio Spaces runtime.
 # ---------------------------------------------------------------------------
 
 demo.queue(max_size=4, default_concurrency_limit=1)
 
-_original_launch = demo.launch
+# These decorators run at import time. demo.app is the FastAPI instance
+# underlying the Gradio Blocks. Routes registered here will be served
+# alongside the Gradio UI once the server starts.
+# NOTE: demo.app is created lazily by Gradio, so we use a startup hook
+# to register routes after the server is ready.
+import threading
+
+def _register_routes():
+    # Wait for demo.app to be available (created during launch)
+    import time
+    for _ in range(30):
+        if hasattr(demo, "app") and demo.app is not None:
+            break
+        time.sleep(1)
+
+    if not hasattr(demo, "app") or demo.app is None:
+        _log("Warning: demo.app not available, API routes not registered")
+        return
 
+    @demo.app.get("/respite/resources")
+    def resources():
+        return JSONResponse({"resources": API_RESOURCES})
 
-def _patched_launch(*args, **kwargs):
-    kwargs.setdefault("app_kwargs", {})["app"] = api
-    return _original_launch(*args, **kwargs)
+    @demo.app.get("/respite/specs")
+    def specs():
+        return JSONResponse({**API_SPECS, "runtime": _get_runtime_specs()})
 
+    _log("API routes registered at /respite/resources and /respite/specs")
 
-demo.launch = _patched_launch
+threading.Thread(target=_register_routes, daemon=True).start()