MCP Inspector
The official MCP debugger — 11K stars, inspect any server.
About
MCP Inspector (modelcontextprotocol/inspector, 11,057 stars) is the official debugging tool for MCP: connect to any server, inspect tools/resources/prompts, and test calls — the "DevTools for MCP."
Pushed Oct 2026. Essential for MCP development — before you ship a server, debug it here. The UI is straightforward; the protocol coverage is complete.
What it can do
- • Inspect any MCP server\n• Test tools/resources\n• Protocol debugging\n• Official tool
Setup
- Run:
npx @modelcontextprotocol/inspector.\n2. Connect to your server (stdio or SSE).\n3. Inspect and test.
Prerequisites
Node.js; an MCP server to debug.
Use cases
Works with
Trust score — 8/10
Scored 8/10 (verified tier). 11K stars, official, actively maintained — the essential MCP dev tool. Docked two points: (1) no license file detected — verify; (2) dev tool, not production. For MCP development.
★ 11,057 GitHub stars
How the trust score is built
Full methodology →- Adoption · stars/downloads, log-scaled vs peers
- 7.6/10
- Maintenance · recency, releases, issue load
- 9.6/10
- Openness · license + docs
- 5.9/10
- Manual review · sanity read + red-flag check
- 9.0/10
- · 11,057 GitHub stars (log-scaled vs catalog peers)
- · last push 1d ago; 20 releases/12mo; 120 open issues
- · manual review: essential dev tool; official; license: NOASSERTION — no license file detected; verify
Sources
Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.