fastmcp vs python-sdk
Two of the top projects in MCP servers for developers, side by side: who leads on each score part and who each one suits, then setup, license, activity and what each review found.
fastmcp
Python framework for building MCP servers, clients, and interactive apps
python-sdk
Official Python SDK for building MCP servers and clients
Verdict
Both score 88; fastmcp ranks higher on stars, 28,261 to 24,726. Of the 4 score parts we measure for both, fastmcp leads on 2, python-sdk on 1 and 1 is even.
- Adoptionfastmcp leads by 1 point, 85 to 84: close to even.
- FreshnessEven at 100.
- Maintenancefastmcp leads by 4 points, 86 to 82: close to even.
- Agent-readypython-sdk leads by 15 points, 85 to 70: a wide gap.
Pick fastmcp if you are
Python developers building MCP servers or clients for LLM tools
- Tool schemas and validation are generated from Python type hints and docstrings
- Covers servers, clients and interactive Apps in one package
Pick python-sdk if you are
Python developers building MCP servers or clients for LLM apps
- Tool schemas come from Python type hints and docstrings, no hand-written JSON Schema
- Server and client in one package
| What we compare | fastmcp | python-sdk |
|---|---|---|
| Score parts, out of 100 | ||
| Adoption | 85, widely used | 84, widely used |
| Freshness | 100, active | 100, active |
| Maintenance | 86, healthy | 82, healthy |
| Agent-ready | 70, partly | 85, ready |
| Facts from GitHub and the README | ||
| Stars | 28.3k | 24.7k |
| License | Apache-2.0 (permissive) | MIT (permissive) |
| Last commit | Nov 2026 | Oct 2026 |
| Last release | Oct 2026 | Oct 2026 |
| Language | Python | Python |
| Docker | No | No |
| GPU | Not needed | Not needed |
| arm64 or Apple Silicon | Not stated | Not stated |
fastmcp
FastMCP is a Python framework for the Model Context Protocol. A decorated Python function becomes an MCP tool, with schema, validation and documentation generated from its signature. It also ships a client for local or remote servers and an Apps feature for interactive UIs rendered in the conversation.
Who it is for: Python developers building MCP servers or clients for LLM tools
Strengths
- Tool schemas and validation are generated from Python type hints and docstrings
- Covers servers, clients and interactive Apps in one package
- Minimal server is about ten lines; installs with uv add fastmcp
- Upgrade guides for FastMCP 2/3 and MCP SDK; docs published as llms.txt
Weaknesses
- Python only; TypeScript needs the separate fastmcp-ts project
- SSO, RBAC and audit logs belong to the separate Prefect Horizon product
- Multiple major-version upgrade guides suggest breaking changes between releases
- README gives no Docker image or hardware requirements
- no GPU
- Needs Python, uv (recommended)
python-sdk
Python implementation of the Model Context Protocol. It lets you write MCP servers that expose tools, resources and prompts from type-hinted functions, and clients that connect to any MCP server over stdio, Streamable HTTP or SSE. An optional cli extra adds the mcp dev, mcp run and mcp install commands.
Who it is for: Python developers building MCP servers or clients for LLM apps
Strengths
- Tool schemas come from Python type hints and docstrings, no hand-written JSON Schema
- Server and client in one package
- Supports stdio, Streamable HTTP and SSE transports
- Docs include a get-started guide, API reference and v2 migration guide
Weaknesses
- Requires Python 3.11 or newer
- A library, not a ready-made server; you write the tools yourself
- v2 has a migration guide, so v1 code may need changes
- README gives no auth or deployment details; those are only in the docs
- no GPU
- Needs Python 3.11+
- port 8000
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