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Fastmcp: The fast, Pythonic way to build MCP servers and clients. It is listed under Development & Code on AI Registry as a free tool.
The tools below are approved listings in the same category, ordered by how closely their tags match Fastmcp. This is an automatic list. We have not written a researched verdict for Fastmcp yet, so treat it as a shortlist and check each vendor's pricing page before switching.
Built from each tool's listing. Vendors can update their own listing after claiming it.
Open source version of Claude Managed Agents.
Agentor is an open source Python framework from Celesto AI for building, deploying and operating long running AI agents. It includes tool use, MCP support, the A2A agent to agent protocol and durable execution, and a working agent with tools can be created and served in a few lines of code. It is designed for develope...
Dynamically expose tools from proxied servers based on an Agent Persona
Hypertool MCP is listed at toolprint.ai, a software development kit that helps AI agents choose the right tools for a workflow. It is built on the Model Context Protocol and lets developers connect hundreds of tools through a single SDK, then teach agents which of them to use and when to reach the stated goal. The cen...
The open-source TypeScript SDK for running AI coding agents in sandboxes.
AgentBox is an open source TypeScript SDK from Twill for running AI coding agents inside sandboxes through one unified API. Instead of calling an agent command line tool in non interactive mode, it launches each agent as a server process inside the sandbox and talks to it over WebSocket or HTTP, which preserves approva...
Fast-track AI innovation with a centralized, trusted, curated registry
Agentregistry is an open source, Kubernetes native registry for MCP servers, agents, skills and prompts. Platform teams use it to curate the AI building blocks their organization trusts in one catalog, then deploy them into a cluster through kagent with a single command. It is built for platform and DevOps teams that ...
Zig code intelligence server and MCP toolset for AI agents.
codedb is an open source code intelligence server for AI coding agents, built in Zig by the Codegraff team and exposed over the Model Context Protocol. Instead of an agent shelling out to text search and reading whole files for every query, codedb indexes a repository once at startup and answers structural questions fr...
Git For database Systems
GFS brings Git style version control to databases. It lets a team commit, branch, merge and travel back through database history, so a working copy of realistic data can be spun up for a single task and discarded afterward instead of being shared, reset and queued for by everyone at once. The project comes from Guepar...