---
phase: 04-single-model-qa
plan: 01
type: execute
---

<objective>
Create AI client abstraction layer supporting Requesty and OpenRouter as model routers.

Purpose: Establish the foundation for all AI model interactions - single queries, multi-model discussions, and consensus generation all flow through this client.
Output: Working ai_client.py that can send prompts to any model via Requesty or OpenRouter.
</objective>

<execution_context>
~/.claude/get-shit-done/workflows/execute-phase.md
~/.claude/get-shit-done/templates/summary.md
</execution_context>

<context>
@.planning/PROJECT.md
@.planning/ROADMAP.md
@.planning/STATE.md
@.planning/phases/03-project-crud/03-03-SUMMARY.md

# Key files:
@src/moai/bot/config.py
@src/moai/core/models.py

# From discovery (no DISCOVERY.md needed - Level 1):
# Both Requesty and OpenRouter are OpenAI SDK compatible:
# - Requesty: base_url="https://router.requesty.ai/v1", model format "provider/model-name"
# - OpenRouter: base_url="https://openrouter.ai/api/v1", needs HTTP-Referer header
# Can use `openai` package with different base_url/headers

**Tech available:**
- python-telegram-bot, sqlalchemy, httpx, aiosqlite
- pytest, pytest-asyncio

**Established patterns:**
- Service layer in core/services/
- Config loading from environment in bot/config.py
- Async functions throughout

**Constraining decisions:**
- AI client as abstraction layer (PROJECT.md)
- httpx for API calls (SPEC.md)
</context>

<tasks>

<task type="auto">
  <name>Task 1: Add openai dependency and extend config</name>
  <files>pyproject.toml, src/moai/bot/config.py</files>
  <action>
1. Add `openai` to dependencies in pyproject.toml (unpinned per project standards)
2. Extend Config class in bot/config.py with:
   - AI_ROUTER: str (env var, default "requesty") - which router to use
   - AI_API_KEY: str (env var) - API key for the router
   - AI_REFERER: str | None (env var, optional) - for OpenRouter's HTTP-Referer requirement

Note: Use existing pattern of loading from env with os.getenv(). No need for pydantic or complex validation - keep it simple like existing Config class.
  </action>
  <verify>python -c "from moai.bot.config import Config; c = Config(); print(c.AI_ROUTER)"</verify>
  <done>Config has AI_ROUTER, AI_API_KEY, AI_REFERER attributes; openai in dependencies</done>
</task>

<task type="auto">
  <name>Task 2: Create AI client abstraction</name>
  <files>src/moai/core/ai_client.py</files>
  <action>
Create ai_client.py with:

1. AIClient class that wraps OpenAI AsyncOpenAI client:
   ```python
   class AIClient:
       def __init__(self, router: str, api_key: str, referer: str | None = None):
           # Set base_url based on router ("requesty" or "openrouter")
           # Store referer for OpenRouter
           # Create AsyncOpenAI client with base_url and api_key
   ```

2. Async method for single completion:
   ```python
   async def complete(self, model: str, messages: list[dict], system_prompt: str | None = None) -> str:
       # Build messages list with optional system prompt
       # Call client.chat.completions.create()
       # Add extra_headers with HTTP-Referer if OpenRouter and referer set
       # Return response.choices[0].message.content
   ```

3. Model name normalization:
   - For Requesty: model names need provider prefix (e.g., "claude" -> "anthropic/claude-sonnet-4-20250514")
   - For OpenRouter: similar format
   - Create MODEL_MAP dict with our short names -> full model identifiers
   - MODEL_MAP = {"claude": "anthropic/claude-sonnet-4-20250514", "gpt": "openai/gpt-4o", "gemini": "google/gemini-2.0-flash"}

4. Module-level convenience function:
   ```python
   _client: AIClient | None = None

   def init_ai_client(config: Config) -> AIClient:
       global _client
       _client = AIClient(config.AI_ROUTER, config.AI_API_KEY, config.AI_REFERER)
       return _client

   def get_ai_client() -> AIClient:
       if _client is None:
           raise RuntimeError("AI client not initialized")
       return _client
   ```

Keep it minimal - no retry logic, no streaming (yet), no complex error handling. This is the foundation; complexity comes later as needed.
  </action>
  <verify>python -c "from moai.core.ai_client import AIClient, MODEL_MAP; print(MODEL_MAP)"</verify>
  <done>AIClient class exists with complete() method, MODEL_MAP has claude/gpt/gemini mappings</done>
</task>

</tasks>

<verification>
Before declaring plan complete:
- [ ] `uv sync` installs openai package
- [ ] Config loads AI settings from environment
- [ ] AIClient can be instantiated with router/key
- [ ] MODEL_MAP contains claude, gpt, gemini mappings
- [ ] `ruff check src` passes
</verification>

<success_criteria>

- openai package in dependencies
- Config extended with AI_ROUTER, AI_API_KEY, AI_REFERER
- AIClient class with complete() method
- MODEL_MAP with short name -> full model mappings
- Module-level init_ai_client/get_ai_client functions
- All code follows project conventions (type hints, docstrings)
  </success_criteria>

<output>
After completion, create `.planning/phases/04-single-model-qa/04-01-SUMMARY.md`
</output>