modelcontextprotocol/inspector
Visual testing tool for MCP servers observed · 2026-08-28
Health v2 · maintenance only
89/100
- Activity 99
- Release rhythm 99
- Longevity 49
Flags: no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 7.5
- age_days: 699
- days_rel: 7
- days_push: 7
- n_releases_24m: 59
Adoption not part of the score
10760 stars · 1497 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
The MCP Inspector is the reference developer tool for testing and debugging Model Context Protocol (MCP) servers. It ships as a single npm package offering three clients behind one binary: a web UI, a scriptable CLI, and an interactive terminal UI.
Use cases
- test and debug an MCP server before shipping it
- inspect MCP tool, resource, and prompt calls in a browser UI
- run MCP server checks in CI pipelines
- script MCP server interactions for coding agents
- debug MCP servers from the terminal without a browser
- verify OAuth flows and protocol version negotiation for an MCP server
When to choose
- you are building or integrating MCP servers and need the official reference inspector
- you want one tool that works in the browser, CLI, and terminal with shared config and OAuth state
- you need machine-readable MCP output for automation or agent feedback loops
When to avoid
- you need to test non-MCP APIs or protocols
- you want a general-purpose HTTP or GraphQL debugger
- your environment cannot run Node.js 22.19+
Facets
application · maturity active
testing developer-tools cli mcp developer-tools artificial-intelligence cli browser cross-platform mcp model-context-protocol inspector tui debugging-tool protocol-testing oauth typescript debugging ai-agents command-line nodejs
10 sources
- readme: https://github.com/modelcontextprotocol/inspector · fetched 2026-08-28 · 9b50d6fd0396
- homepage: https://modelcontextprotocol.io/docs/2026-07-28/tools/inspector · fetched 2026-08-29 · b8ed896061bd
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/getting-started/intro · fetched 2026-08-29 · 07c1cb30d058
- site_page: https://modelcontextprotocol.io/registry/about · fetched 2026-08-29 · 59c4c7c6cfb1
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/learn/architecture · fetched 2026-08-29 · d78e2ca1030c
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/learn/server-concepts · fetched 2026-08-29 · dcfdf8aa6212
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/learn/client-concepts · fetched 2026-08-29 · 4a3b517c32bd
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/learn/versioning · fetched 2026-08-29 · b65b22767e07
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/develop/connect-local-servers · fetched 2026-08-29 · 48f81283c5c2
- site_page: https://modelcontextprotocol.io/docs/2026-07-28/develop/connect-remote-servers · fetched 2026-08-29 · dde4687fd7b6
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| modelcontextprotocol/inspector | main | 89 |
For agents
markdown · JSON · MCP: product_card(name="modelcontextprotocol/inspector")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem