API Test MCP

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Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/thisis-najeeb-api-test-mcp

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What this server can do and what it asks for, from its tool list and install config. Checked Oct 25, 2026.

Tools

4 read · 3 write · 0 delete · 1 not yet classified

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Node.js package

Tools (8)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• call_endpointCall a real API endpoint

  Make an actual HTTP call to a documented endpoint and return the real status, headers, and body. Does not validate the response — use test_endpoint if you also want schema validation.

• check_healthPing a set of endpoints and report reachability/latency

  One-shot health check: calls each given endpoint (or, if none given, every parameter-free GET in the loaded spec) and reports whether it responded, its status code, and latency. Useful for a quick 'is the API up' pass, e.g. before a demo or as part of CI.

• diff_api_specsDiff two versions of an OpenAPI spec for breaking changes

  Compare two OpenAPI/Swagger specs (each a URL or local file path — e.g. an old tag vs. the current main) and report added/removed endpoints plus request/response schema changes, flagging which ones are likely to break existing clients (removed fields, newly-required fields, type changes, removed enum values) versus safe additive changes. Does not affect the spec currently loaded for the other tools.

• list_endpointsList loaded endpoints

  List every endpoint (method + path) from the currently loaded API spec.

• load_api_specLoad an OpenAPI/Swagger spec

  Load and fully dereference an OpenAPI/Swagger spec from a URL or local file path (JSON or YAML). Call this first. Returns the API title, servers, and every documented endpoint.

• run_all_testsRun a contract-test pass across the whole API

  Best-effort run across every GET endpoint that needs no required parameters: calls each one for real and validates the response against the documented schema. Endpoints needing parameters are listed as skipped (use test_endpoint for those individually), and DELETE/OPTIONS/HEAD are never auto-run. Set includeMutating: true to also auto-generate example params/bodies from the schema and attempt POST/PUT/PATCH endpoints — off by default because that can create or modify real data on the live API.

• test_endpointCall and validate an endpoint in one step

  Call a documented endpoint with real parameters, then validate the real response against its documented schema. Returns pass/fail plus the specific mismatches found. This is the main tool for 'does this endpoint actually work as documented'.

• validate_responseValidate a response against the spec

  Check a response body against the JSON schema documented for a given method + path + status code.

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Last commit

Aug 31, 2026 (2 months ago)

Last release

Aug 31, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.thisis-najeeb/api-test-mcp

Version

1.0.2

Auth

No auth

Packages

npm api-test-mcp

License

MIT

Repository

github.com/thisis-najeeb/api-test-mcp

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql