Add Tool

Create mortgage_concierge/tools/<tool_name>.py:

• Follow pattern from existing tools (e.g., store_state.py for sync, simulation_tools.py for async)
• Override __name__: func.__name__ = "<tool_name>"
• Wrap: tool = FunctionTool(func)
• Verify tests PASS

Step 4 — Register

• Import in mortgage_concierge/agent.py
• Add to tools=[] list
• Add tool description to AGENT_INSTRUCTION in prompt.py

Step 5 — Add Eval Cases

• Add at least one entry to appropriate evalset in tests/eval/data/
• Include query, expected_tool_use, reference

Step 6 — Verify No Regression

Run full eval suite and compare against baseline.

Reference Files

• Sync pattern: mortgage_concierge/tools/store_state.py
• Async pattern: mortgage_concierge/tools/simulation_tools.py
• Test pattern: tests/unit/test_loan_calculator.py
• Agent registration: mortgage_concierge/agent.py