Prompt
What is the best framework for building MCP servers?
Latest observation
There isn’t one universal “best” framework for MCP servers — the best choice depends on your language, runtime, and how much scaffolding you want.
Good options by situation
1. Official MCP SDKs
Best default choice.
If you want the most direct, standards-aligned way to build an MCP server, use the official SDK for your language.
- TypeScript/JavaScript: easiest and most commonly used
- Python: good if your tooling or agents are Python-based
Why choose it:
- First-class MCP support
- Keeps you close to the protocol
- Less framework overhead
- Easier to debug and reason about
2. FastMCP (Python)
Best for Python developers who want a very ergonomic API.
Why choose it:
- Very quick to build tools/resources/prompts
- Nice developer experience
- Good for prototypes and internal tools
Tradeoff:
- More abstraction than the bare SDK, so you’re a bit less close to the protocol
3. Build directly on the MCP SDK + your web framework
If you already use FastAPI, Express, NestJS, etc., it can be better to integrate the MCP SDK rather than adopt a separate framework.
Why choose it:
- Fits existing app architecture
- Easier to reuse auth, logging, DB, business logic
- Good for production services
Recommendation
- If you’re starting fresh: use the official MCP SDK
- If you want fastest Python development: use FastMCP
- If you already have an app stack: integrate MCP into your existing framework
Rule of thumb
Choose the framework that gives you:
- the best language fit,
- the least friction with your existing code,
- the clearest path to production deployment.
If you want, I can also give you a comparison table of MCP server frameworks or recommend the best one for Python, TypeScript, or production deployment.
Observation history
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Meta AI,
Qwen.
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