Today we’re digging into the Model Context Protocol, or MCP. Think LSP for AI: build a small Python service once and your tools and data show up across editors and agents like VS Code, Claude Code, and more. My guest, Den Delimarsky from Microsoft, helps build this space and will keep us honest about what’s solid versus what's just shiny. We’ll keep it practical: transports that actually work, guardrails you can trust, and a tiny server you could ship this week. By the end, you’ll have a clear mental model and a path to plug Python into the internet of agents.

Episode sponsors

Sentry AI Monitoring, Code TALKPYTHON
NordStellar
Talk Python Courses

Links from the show

Den Delimarsky: den.dev

Agentic AI Programming for Python Course: training.talkpython.fm

Model Context Protocol: modelcontextprotocol.io
Model Context Protocol Specification (2025-03-26): modelcontextprotocol.io
MCP Python Package (PyPI): pypi.org
Awesome MCP Servers (punkpeye) GitHub Repo: github.com
Visual Studio Code Docs: Copilot MCP Servers: code.visualstudio.com
GitHub MCP Server (GitHub repo): github.com
GitHub Blog: Meet the GitHub MCP Registry: github.blog
MultiViewer App: multiviewer.app
GitHub Blog: Spec-driven development with AI (open source toolkit): github.blog
Model Context Protocol Registry (GitHub): github.com
mcp (GitHub organization): github.com
Tailscale: tailscale.com

Watch this episode on YouTube: youtube.com
Episode #527 deep-dive: talkpython.fm/527
Episode transcripts: talkpython.fm

Theme Song: Developer Rap
🥁 Served in a Flask 🎸: talkpython.fm/flasksong

---== Don't be a stranger ==---
YouTube: youtube.com/@talkpython

Bluesky: @talkpython.fm
Mastodon: @talkpython@fosstodon.org
X.com: @talkpython

Michael on Bluesky: @mkennedy.codes
Michael on Mastodon: @mkennedy@fosstodon.org
Michael on X.com: @mkennedy

#527: MCP Servers for Python Devs

Talk Python To Me