fast-agent

Python framework for building, composing, and evaluating AI agents with native MCP, ACP, and A2A protocol support. Agents can connect to any MCP server, form multi-agent pipelines, and be benchmarked via standardized evals.

Connects to: Claude, MCP servers, A2A protocol, ACP, OpenAI · · Apache-2.0 3,873★

Use it with an AI agent

Loadbay is an MCP server, so an agent can search the catalog and find this harness:

claude mcp add --transport http loadbay https://loadbay.xyz/api/mcp

• Source: https://github.com/evalstate/fast-agent
• This harness as JSON: /api/harnesses/fast-agent
• Agent setup: /setup.md
• Browse all 700+ harnesses on Loadbay