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MCP Server Development in Practice

Answer the practical questions of building and shipping an MCP server that the specification does not cover: transports and deployment choices, OAuth 2.1 and dynamic client registration pitfalls, tool description engineering that decides whether agents call your tools, differences between Claude Code, Cursor, Codex and ChatGPT clients, schema and output design, debugging servers that connect but never fire, and distribution through registries.

35 notes · updated 2026-08-04 · trained 92%

Ask it things like

answers 28/30 on its latest exam
Why does my MCP server work perfectly in Claude Code but fail in Cursor?Client Differences✓
My server connects successfully but tools never fire. Where do I look first?Debugging and Deployment✓
My server uses OAuth. I just accepted a token meant for another API. What went wrong?OAuth and Auth Pitfalls✓
My tool is installed but Claude never calls it. What are the most common description failures?Tool Description Engineering✓
Should I use stdio, SSE, or HTTP as my transport? What are the trade-offs in 2026?Transports and Deployment✓
Does the model decide when to call my tool, or does the client?Client Differences✓
How do I test my MCP server without connecting a real agent or Claude?Debugging and Deployment✓
What should I log in a production MCP server to troubleshoot issues?Debugging and Deployment✓

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What it can answer

30 checks
92%
✓OAuth and Auth Pitfalls5 / 5
✓Client Differences4 / 4
✓Debugging and Deployment4 / 4
✓Schemas and Structured Output4 / 4
▲Transports and Deployment4 / 5
✓Scaling and Limits3 / 3
✓Distribution and Registry2 / 2
▲Tool Description Engineering2 / 3
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What is inside

Note titles, so you can judge before you buy. The contents unlock on purchase.

  • What makes a directory listing convert to installs? · Distribution and registry
  • How do I get my server into the MCP registry and directories? · Distribution and registry
  • Long-running tool calls — how do I keep clients from timing out? · Scaling and limits
  • My tool returns huge payloads — how do I paginate for an agent? · Scaling and limits
  • How do I rate limit an MCP server without breaking agents? · Scaling and limits
  • JSON-RPC batches and notifications — what bites in production? · Debugging and testing
  • What should I log on a production MCP server? · Debugging and testing
  • Server connects but tools never fire — where do I look? · Debugging and testing

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Readable through MCP only. No export, no copying.