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app.py

@@ -166,6 +166,14 @@ def _api_error(message: str, error_type: str = "invalid_request_error", status:
     )
 
 
+def _exception_to_error(exc: Exception) -> JSONResponse:
+    message = f"{type(exc).__name__}: {exc}"
+    text = str(exc).lower()
+    if "zerogpu" in text and ("quota" in text or "limit" in text or "quota" in message.lower()):
+        return _api_error(str(exc), "rate_limit_error", status=429, code="gpu_quota_exceeded")
+    return _api_error(message, "server_error", status=500)
+
+
 def _with_request_context(request: fastapi.Request, text: str, candidates: int, fallback: bool) -> dict:
     if GradioRequest is not None:
         gr_request = GradioRequest(request=request, session_hash="api")
@@ -265,7 +273,7 @@ def v1_convert(body: ConvertRequest, request: fastapi.Request) -> dict | JSONRes
     try:
         result = _with_request_context(request, body.text.strip(), int(body.candidates), bool(body.structured_fallback))
     except Exception as exc:
-        return _api_error(f"{type(exc).__name__}: {exc}", "server_error", status=500)
+        return _exception_to_error(exc)
     payload = _result_payload(result, body.text.strip(), started)
     payload.update({"id": f"conv-{uuid.uuid4().hex[:24]}", "object": "pasita.conversion", "created": int(time.time()), "model": "pasita-v1"})
     return payload
@@ -305,7 +313,7 @@ def chat_completions(body: ChatCompletionRequest, request: fastapi.Request) -> d
     try:
         result = _with_request_context(request, text.strip(), int(body.candidates), bool(body.structured_fallback))
     except Exception as exc:
-        return _api_error(f"{type(exc).__name__}: {exc}", "server_error", status=500)
+        return _exception_to_error(exc)
 
     payload = _result_payload(result, text.strip(), started)
     completion_id = f"chatcmpl-{uuid.uuid4().hex[:24]}"
@@ -393,7 +401,8 @@ FOOTER = f"""
   <span>PASITA v1 converts plain text to Markdown, in Spanish and English. It works best on medium and long documents.</span>
   <span>
     <a href="{MODEL_CARD}" target="_blank" rel="noopener">MODEL</a> /
-    <a href="?view=api" target="_blank" rel="noopener">API</a> /
+    <a href="/docs" target="_blank" rel="noopener">API DOCS</a> /
+    <a href="?view=api" target="_blank" rel="noopener">GRADIO API</a> /
     RUNS ON ZEROGPU
   </span>
 </footer>