fastMCP (JavaScript)
TypeScript framework for building Model Context Protocol servers.
Agent, MCP and tool libraries npm MIT
Used in agent projects
33
0.3% of 12,697 public repos built with AI coding agents
Rank in agent, mcp and tool libraries
#8 of 9
by use in those projects
Downloads
709K
npm, last 7 days, fastmcp
GitHub stars
3,274
last push Oct 4, 2026
How fastMCP (JavaScript) is used
fastMCP (JavaScript) is a dependency in 33 of the 12,697 public GitHub projects set up for AI coding agents that we scanned (0.3%), #8 of 9 in agent, mcp and tool libraries. The most used alternative there is Model Context Protocol SDK (JavaScript). Projects that use it most often also use Zod (75.8%), dotenv (72.7%), chalk (69.7%). It is more common in projects set up for Kiro (4.8%) than for Claude Code (0.5%).
Often used with fastMCP (JavaScript)
| Zod | 75.8% of fastMCP (JavaScript) projects · 4.5× more than average |
|---|---|
| dotenv | 72.7% of fastMCP (JavaScript) projects · 4.6× more than average |
| chalk | 69.7% of fastMCP (JavaScript) projects · 39.9× more than average |
| cli-table3 | 69.7% of fastMCP (JavaScript) projects · 184.4× more than average |
| Commander | 69.7% of fastMCP (JavaScript) projects · 47.8× more than average |
| Express | 69.7% of fastMCP (JavaScript) projects · 10.8× more than average |
| Fuse.js | 69.7% of fastMCP (JavaScript) projects · 106.6× more than average |
| Inquirer.js | 69.7% of fastMCP (JavaScript) projects · 105.4× more than average |
By coding agent
| Cursor | 1.1% of projects set up for it |
|---|---|
| Claude Code | 0.5% of projects set up for it |
| Devin Desktop | 4.0% of projects set up for it |
| Kiro | 4.8% of projects set up for it |
Share of public repos configured for each agent that list fastMCP (JavaScript) as a dependency.
Install
| Package | npm install fastmcp |
|---|---|
| Main stacks | TypeScript / JavaScript (28), Next.js (2), Python (2), Flutter (1) |
| Example projects | guimatheus92/mcp-video-analyzer, flesler/mcp-tasks |
Alternatives to fastMCP (JavaScript)
| Tool | Used in agent projects | Downloads / wk | GitHub stars | License |
|---|---|---|---|---|
| Model Context Protocol SDK (JavaScript) npm TypeScript SDK for building MCP servers and clients to extend AI agent capabilities. |
603 (4.7%) | 65.4M | 13.5K | MIT |
| Model Context Protocol SDK (Python) pypi Python SDK for building MCP servers and clients to extend AI agent capabilities. |
484 (3.8%) | 60.6M | 24.5K | MIT |
| FastMCP (Python) pypi Fast, Pythonic framework for building MCP servers and clients for AI tool integration. |
169 (1.3%) | 14.3M | 28K | — |
| LangChain (Python) pypi Framework for composing applications with LLMs through chains and agents. |
141 (1.1%) | 37.3M | 148K | MIT |
| LangGraph pypi Framework for building stateful, multi-actor applications with LLMs. |
82 (0.6%) | 12.1M | 43K | — |
| LangChain.js npm Build applications with LLMs using composable abstractions for chains, agents and memory. |
67 (0.5%) | 6.2M | 18.3K | MIT |
| Mastra npm Framework for building AI agents with tools, memory and MCP server support. |
39 (0.3%) | 2M | 28.7K | Apache-2.0 |
| LangChain (JavaScript) npm TypeScript framework for building applications with LLMs, chains, agents and memory. |
30 (0.2%) | 3.1M | 18.3K | MIT |