“API testing”

MCP server for API testing.

Call the real API and check the response against your OpenAPI spec.

MCP server for API testing: HTTP requests, cURL generation, health checks.

Keploy

keploy

End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.

Scaffold, validate, format, and run YAML.mmt API tests.

Loops MCP by usefulapi

usefulapi.io

Manage Loops contacts, mailing lists, and transactional/event emails.

Quality scoring and progressive gates for AI-generated API tests.

Navigate and query OpenAPI specs with fuzzy search, pagination, and API testing

Kurlo

kurlo.devOfficial

Run, write and test the API requests saved in a Kurlo workspace, the open source API client.

Allure TestOps MCP — projects, launches, test cases, test results via REST API.

Parallel-burst abuse testing for agent APIs with replayable evidence packs.

Trickl for AI assistants: full docs, setup plans, and sandbox tools to test purchases end to end.

Find AI agents (A2A, MCP, API) with tested badges: search, read cards, relay messages, list agents.

Test, validate and explain regular expressions with match highlighting.

Send transactional email, run campaigns, manage contacts and automations, audit deliverability.

Godot 4 MCP server — test runner, API docs, script analysis, scene parsing, LSP.

Test webhook endpoints — send requests, measure latency, validate responses.

MailFixture

mailfixture.comOfficial

Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links.

Pare Test ג€” Auto-detects test framework (pytest, jest, vitest, mocha), returns typed JSON.

Local-first visual regression for AI agents: verdicts, diff images, explain_snapshot.

AI-callable tools for API mocking, testing, monitoring, security, and automation.

MCP server exposing Buildkite API data (pipelines, builds, jobs, tests) to AI tooling and editors.

MCP Server for WeChat DevTools CLI - Automate development & testing with 7 aggregated APIs.

Sanctions API docs and request validation, with account-linked synthetic sandbox testing.