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mcp-server-inspector
JavaScript CLI/MCP utility that launches another stdio MCP server, performs a real MCP handshake, follows paginated tools/list results, reads static package declarations, compares advertised claims with runtime behavior, and reports seven distinct failure states plus what it did not test. Public GitHub repository created September 15, 2026.
MCP unverified
Integration
| Transport | stdio |
| Auth | none |
| Endpoint | npx -y mcp-server-inspector |
| Install | npx -y mcp-server-inspector @modelcontextprotocol/server-filesystem |
Use Cases
| 01 | Health-check a candidate MCP server by actually launching it and inspecting the tools it exposes before installation |
| 02 | Detect handshake, initialization, pagination, timeout, process-exit, and tools/list failure modes instead of treating every issue as a generic failure |
| 03 | Compare README/package claims with live tool declarations during MCP server evaluation or registry curation |
Tags
mcp-inspection health-check tools-list supply-chain runtime-verification javascript npx stdio
Machine-readable: /api/servers.json
· JSON-LD schema embedded in <head>