mcp-server-and-agent

Status: work in progress. Scaffolded, not yet implemented. This README will carry generated numbers once the first results land.

A hand-written MCP server at the protocol level plus a LangGraph agent over it, with four topologies run against the same task set and their failure modes measured.

This repo answers one question:

What is each agent topology's failure rate, and does supervisor actually beat single-agent?

Everything here serves answering that. Features that do not help answer it are out of scope — deliberately.

Why this exists

Quickstart

uv sync --extra dev
uv run pytest -q
uv run python scripts/generate_results.py

Results

No results yet.

Design decisions

Limitations

Concepts covered

• 2C hand-written MCP server plus LangGraph agent (DO-8)

• 2C ReAct, plan-and-execute, reflection

• 2C topologies and their failure modes

• 2C tool design: schema clarity, granularity, errors as model feedback, idempotency, confirmation gates

• 2C MCP as a protocol: transports, discovery, resources, prompts, sampling, OAuth scope

• 2C state and memory, checkpointing, durable execution

• …and 4 more (see docs/inventory-coverage.md)

License

MIT