feat: seed governance config and responses routing

ai/agents/task_agent/.env.example

@@ -1,10 +1,17 @@
-# Default LiteLLM configuration
-LITELLM_MODEL=gemini/gemini-2.0-flash-001
-# LITELLM_PROVIDER=gemini
+# Default LiteLLM configuration routed through the proxy
+LITELLM_MODEL=openai/gpt-4o-mini
+LITELLM_PROVIDER=openai
 
-# API keys (uncomment and fill as needed)
-# GOOGLE_API_KEY=
-# OPENAI_API_KEY=
-# ANTHROPIC_API_KEY=
-# OPENROUTER_API_KEY=
-# MISTRAL_API_KEY=
+# Proxy connection (override when running locally without Docker networking)
+# Use http://localhost:10999 when accessing from the host
+FF_LLM_PROXY_BASE_URL=http://llm-proxy:8080
+
+# Virtual key issued by Bifrost or LiteLLM proxy for the task agent (bootstrap replaces the placeholder)
+OPENAI_API_KEY=sk-proxy-default
+
+# Upstream provider keys live inside the proxy container
+# BIFROST_OPENAI_KEY=
+# BIFROST_ANTHROPIC_KEY=
+# BIFROST_GEMINI_KEY=
+# BIFROST_MISTRAL_KEY=
+# BIFROST_OPENROUTER_KEY=

ai/agents/task_agent/README.md

@@ -43,18 +43,30 @@ cd task_agent
 # cp .env.example .env
 ```
 
-Edit `.env` (or `.env.example`) and add your API keys. The agent must be restarted after changes so the values are picked up:
+Edit `.env` (or `.env.example`) and add your proxy + API keys. The agent must be restarted after changes so the values are picked up:
 ```bash
-# Set default model
-LITELLM_MODEL=gemini/gemini-2.0-flash-001
+# Route every request through the proxy container (use http://localhost:10999 from the host)
+FF_LLM_PROXY_BASE_URL=http://llm-proxy:8080
 
-# Add API keys for providers you want to use
-GOOGLE_API_KEY=your_google_api_key
-OPENAI_API_KEY=your_openai_api_key
-ANTHROPIC_API_KEY=your_anthropic_api_key
-OPENROUTER_API_KEY=your_openrouter_api_key
+# Default model + provider the agent boots with
+LITELLM_MODEL=openai/gpt-4o-mini
+LITELLM_PROVIDER=openai
+
+# Virtual key issued by the proxy to the task agent (bootstrap replaces the placeholder)
+OPENAI_API_KEY=sk-proxy-default
+
+# Upstream keys stay inside the proxy (Bifrost config references env.BIFROST_* names)
+BIFROST_OPENAI_KEY=your_real_openai_api_key
+BIFROST_ANTHROPIC_KEY=your_real_anthropic_key
+BIFROST_GEMINI_KEY=your_real_gemini_key
+BIFROST_MISTRAL_KEY=your_real_mistral_key
+BIFROST_OPENROUTER_KEY=your_real_openrouter_key
 ```
 
+> When running the agent outside of Docker, swap `FF_LLM_PROXY_BASE_URL` to the host port (default `http://localhost:10999`).
+
+The compose bootstrap container provisions the Bifrost gateway, creates a virtual key for `fuzzforge-task-agent`, and rewrites `volumes/env/.env`. Fill in the `BIFROST_*` upstream secrets before the first launch so the proxy can reach your providers when the bootstrap script runs.
+
 ### 2. Install Dependencies
 
 ```bash

ai/agents/task_agent/litellm_agent/config.py

@@ -4,13 +4,28 @@ from __future__ import annotations
 
 import os
 
+
+def _normalize_proxy_base_url(raw_value: str | None) -> str | None:
+    if not raw_value:
+        return None
+    cleaned = raw_value.strip()
+    if not cleaned:
+        return None
+    # Avoid double slashes in downstream requests
+    return cleaned.rstrip("/")
+
 AGENT_NAME = "litellm_agent"
 AGENT_DESCRIPTION = (
     "A LiteLLM-backed shell that exposes hot-swappable model and prompt controls."
 )
 
-DEFAULT_MODEL = os.getenv("LITELLM_MODEL", "gemini-2.0-flash-001")
-DEFAULT_PROVIDER = os.getenv("LITELLM_PROVIDER")
+DEFAULT_MODEL = os.getenv("LITELLM_MODEL", "openai/gpt-4o-mini")
+DEFAULT_PROVIDER = os.getenv("LITELLM_PROVIDER") or None
+PROXY_BASE_URL = _normalize_proxy_base_url(
+    os.getenv("FF_LLM_PROXY_BASE_URL")
+    or os.getenv("LITELLM_API_BASE")
+    or os.getenv("LITELLM_BASE_URL")
+)
 
 STATE_PREFIX = "app:litellm_agent/"
 STATE_MODEL_KEY = f"{STATE_PREFIX}model"

ai/agents/task_agent/litellm_agent/state.py

@@ -3,11 +3,15 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
+import os
 from typing import Any, Mapping, MutableMapping, Optional
 
+import httpx
+
 from .config import (
     DEFAULT_MODEL,
     DEFAULT_PROVIDER,
+    PROXY_BASE_URL,
     STATE_MODEL_KEY,
     STATE_PROMPT_KEY,
     STATE_PROVIDER_KEY,
@@ -66,11 +70,109 @@ class HotSwapState:
         """Create a LiteLlm instance for the current state."""
 
         from google.adk.models.lite_llm import LiteLlm  # Lazy import to avoid cycle
+        from google.adk.models.lite_llm import LiteLLMClient
+        from litellm.types.utils import Choices, Message, ModelResponse, Usage
 
         kwargs = {"model": self.model}
         if self.provider:
             kwargs["custom_llm_provider"] = self.provider
-        return LiteLlm(**kwargs)
+        if PROXY_BASE_URL:
+            provider = (self.provider or DEFAULT_PROVIDER or "").lower()
+            if provider and provider != "openai":
+                kwargs["api_base"] = f"{PROXY_BASE_URL.rstrip('/')}/{provider}"
+            else:
+                kwargs["api_base"] = PROXY_BASE_URL
+        kwargs.setdefault("api_key", os.environ.get("OPENAI_API_KEY"))
+
+        provider = (self.provider or DEFAULT_PROVIDER or "").lower()
+        model_suffix = self.model.split("/", 1)[-1]
+        use_responses = provider == "openai" and (
+            model_suffix.startswith("gpt-5") or model_suffix.startswith("o1")
+        )
+        if use_responses:
+            kwargs.setdefault("use_responses_api", True)
+
+        llm = LiteLlm(**kwargs)
+
+        if use_responses and PROXY_BASE_URL:
+
+            class _ResponsesAwareClient(LiteLLMClient):
+                def __init__(self, base_client: LiteLLMClient, api_base: str, api_key: str):
+                    self._base_client = base_client
+                    self._api_base = api_base.rstrip("/")
+                    self._api_key = api_key
+
+                async def acompletion(self, model, messages, tools, **kwargs):  # type: ignore[override]
+                    use_responses_api = kwargs.pop("use_responses_api", False)
+                    if not use_responses_api:
+                        return await self._base_client.acompletion(
+                            model=model,
+                            messages=messages,
+                            tools=tools,
+                            **kwargs,
+                        )
+
+                    resolved_model = model
+                    if "/" not in resolved_model:
+                        resolved_model = f"openai/{resolved_model}"
+
+                    payload = {
+                        "model": resolved_model,
+                        "input": _messages_to_responses_input(messages),
+                    }
+
+                    timeout = kwargs.get("timeout", 60)
+                    headers = {
+                        "Authorization": f"Bearer {self._api_key}",
+                        "Content-Type": "application/json",
+                    }
+
+                    async with httpx.AsyncClient(timeout=timeout) as client:
+                        response = await client.post(
+                            f"{self._api_base}/v1/responses",
+                            json=payload,
+                            headers=headers,
+                        )
+                        try:
+                            response.raise_for_status()
+                        except httpx.HTTPStatusError as exc:
+                            text = exc.response.text
+                            raise RuntimeError(
+                                f"Bifrost responses request failed: {text}"
+                            ) from exc
+                        data = response.json()
+
+                    text_output = _extract_output_text(data)
+                    usage = data.get("usage", {})
+
+                    return ModelResponse(
+                        id=data.get("id"),
+                        model=model,
+                        choices=[
+                            Choices(
+                                finish_reason="stop",
+                                index=0,
+                                message=Message(role="assistant", content=text_output),
+                                provider_specific_fields={"bifrost_response": data},
+                            )
+                        ],
+                        usage=Usage(
+                            prompt_tokens=usage.get("input_tokens"),
+                            completion_tokens=usage.get("output_tokens"),
+                            reasoning_tokens=usage.get("output_tokens_details", {}).get(
+                                "reasoning_tokens"
+                            ),
+                            total_tokens=usage.get("total_tokens"),
+                        ),
+                    )
+
+            llm.llm_client = _ResponsesAwareClient(
+                llm.llm_client,
+                PROXY_BASE_URL,
+                os.environ.get("OPENAI_API_KEY", ""),
+            )
+
+        return llm
 
     @property
     def display_model(self) -> str:
@@ -84,3 +186,69 @@ def apply_state_to_agent(invocation_context, state: HotSwapState) -> None:
 
     agent = invocation_context.agent
     agent.model = state.instantiate_llm()
+
+
+def _messages_to_responses_input(messages: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    inputs: list[dict[str, Any]] = []
+    for message in messages:
+        role = message.get("role", "user")
+        content = message.get("content", "")
+        text_segments: list[str] = []
+
+        if isinstance(content, list):
+            for item in content:
+                if isinstance(item, dict):
+                    text = item.get("text") or item.get("content")
+                    if text:
+                        text_segments.append(str(text))
+                elif isinstance(item, str):
+                    text_segments.append(item)
+        elif isinstance(content, str):
+            text_segments.append(content)
+
+        text = "\n".join(segment.strip() for segment in text_segments if segment)
+        if not text:
+            continue
+
+        entry_type = "input_text"
+        if role == "assistant":
+            entry_type = "output_text"
+
+        inputs.append(
+            {
+                "role": role,
+                "content": [
+                    {
+                        "type": entry_type,
+                        "text": text,
+                    }
+                ],
+            }
+        )
+
+    if not inputs:
+        inputs.append(
+            {
+                "role": "user",
+                "content": [
+                    {
+                        "type": "input_text",
+                        "text": "",
+                    }
+                ],
+            }
+        )
+    return inputs
+
+
+def _extract_output_text(response_json: dict[str, Any]) -> str:
+    outputs = response_json.get("output", [])
+    collected: list[str] = []
+    for item in outputs:
+        if isinstance(item, dict) and item.get("type") == "message":
+            for part in item.get("content", []):
+                if isinstance(part, dict) and part.get("type") == "output_text":
+                    text = part.get("text", "")
+                    if text:
+                        collected.append(str(text))
+    return "\n\n".join(collected).strip()