Coding & Debugging
PromptBeginner5 minmarkdown
The official MCP Python SDK provides FastMCP
a high-level framework for building MCP servers. It provides:
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General
PromptBeginner5 minmarkdown
from typing import Optional
List
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General
PromptBeginner5 minmarkdown
@mcp.tool(name=tool_name
annotations={...})
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General
PromptBeginner5 minmarkdown
from pydantic import BaseModel
Field
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General
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- [ ] Error handling uses proper type guards (e.g.
`axios.isAxiosError`
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Coding & Debugging
PromptBeginner5 minmarkdown
This document provides Python-specific best practices and examples for implementing MCP servers using the MCP Python SDK. It covers server setup
tool registration patterns
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General
PromptBeginner5 minmarkdown
- [ ] Error messages are clear
actionable
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General
PromptBeginner5 minmarkdown
- [ ] Annotations correctly set (readOnlyHint
destructiveHint
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Coding & Debugging
PromptBeginner5 minmarkdown
- [ ] Tools enable complete workflows
not just API endpoint wrappers
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General
PromptBeginner5 minmarkdown
- [ ] All tools include `title`
`description`
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General
PromptBeginner5 minmarkdown
- Common operations like pagination
filtering
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General
PromptBeginner5 minmarkdown
Before finalizing your Node/TypeScript MCP server implementation
ensure:
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General
PromptBeginner5 minmarkdown
- If you find yourself writing similar logic twice
extract it into a function
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General
PromptBeginner5 minmarkdown
- **stdio**: Command-line tools
local development
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General
PromptBeginner5 minmarkdown
- **Streamable HTTP**: Web services
remote access
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General
PromptBeginner5 minmarkdown
await transport.handleRequest(req
res
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General
PromptBeginner5 minmarkdown
// Create new transport for each request (stateless
prevents request ID collisions)
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General
PromptBeginner5 minmarkdown
res.on('close'
() => transport.close());
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General
PromptBeginner5 minmarkdown
app.post('/mcp'
async (req
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General
PromptBeginner5 minmarkdown
console.error(Server error:
error);
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General
PromptBeginner5 minmarkdown
console.error(Server error:
error);
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General
PromptBeginner5 minmarkdown
await transport.handleRequest(req
res
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General
PromptBeginner5 minmarkdown
app.listen(port
() => {
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General
PromptBeginner5 minmarkdown
res.on('close'
() => transport.close());
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