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API Testing

Tools for testing, validating, and documenting APIs. Enables creation and execution of API requests, validation of responses, and management of API collections.

MCP ServersBrowse all →

  • delimit by delimit-ai

    delimitofficial

    delimit-ai
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    One workspace for every AI coding assistant. Governance tools for API lint, diff, persistent ledger, multi-model deliberation, security audit, and test verification. Works with Claude Code, Codex, Cursor, and Gemini CLI.
    2
    210
    2,126 npm
    21
    MIT
  • Amazon Business Integrations MCP Server by amazonbusiness

    Amazon Business Integrationsofficial

    amazonbusiness
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    license
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    Provides AI-enabled access to Amazon Business API documentation, sample code, and troubleshooting resources. Enables developers to search and retrieve API documentation, generate integration code, and get guided solutions for common errors during the API integration process.
    2
    11 npm
    1
    Apache 2.0
  • Mercado Pago MCP Server by mercadolibre

    Mercado Pago MCP Serverofficial

    mercadolibre
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    license
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    quality
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    Mercado Pago's Official MCP Server offers tools so that developers can easily interact with our API using natural language, which simplifies tasks and product integration. Remotely hosted by Mercadolibre supporting Streamable HTTP Transport. Details on how to connect: https://mcp.mercadopago.com/
    1
    8
    Apache 2.0

  • x402 Utility

    forgemeshlabs
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    MCP server for discovering and calling 400+ practical APIs through six compact tools, with free catalog search and pay-per-call x402 execution on Base.
    12
    6
    67 npm
    MIT
  • Routebase by routebase-dev

    Routebaseofficial

    routebase-dev
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    API documentation drifts away from the running service, so consumers integrate against a contract nobody keeps. Routebase keeps API design, testing, mocking and documentation on one living source of truth, and this MCP server lets AI agents work in that workspace under the permissions of the connected account.
    162
    52 npm
    MIT
  • qualien-mcp by qualienai

    qualien-mcpofficial

    qualienai
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    license
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    A composite MCP gateway that aggregates multiple MCP servers into one endpoint for SDET/QE workflows, with curated tool namespacing, central safety guardrails, and composite tools like API-vs-DB verification.
    38
    459 npm
    MIT
  • Kong Konnect MCP Server by Kong

    Kong Konnect MCP Serverofficial

    Kong
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    license
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    A Model Context Protocol server enabling AI assistants to interact with Kong Konnect's API Gateway, providing tools to query analytics data, inspect configurations, and manage control planes through natural language.
    10
    44
    Apache 2.0
  • Postman by postmanlabs

    Postmanofficial

    postmanlabs
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    license
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    Postman’s remote MCP server connects AI agents, assistants, and chatbots directly to your APIs on Postman. Use natural language to prompt AI to automate work across your Postman collections, environments, workspaces, and more.
    42
    3,622 npm
    312
    Apache 2.0
  • Mockzilla by mockzilla

    Mockzillaofficial

    mockzilla
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    license
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    MCP server for Mockzilla. Lets coding agents like Claude Code, Claude Desktop, Cursor and Gemini CLI install the Mockzilla CLI and run API mocks from an OpenAPI spec or a single endpoint. Log in from the agent to deploy hosted mocks on mockzilla.org
    14
    47 npm
    5
    MIT
  • @restforge-dev/mcp-server by restforge

    @restforge-dev/mcp-serverofficial

    restforge
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    license
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    MCP server that exposes RESTForge capabilities to AI agents, enabling them to set up, configure, generate code, and manage RESTForge projects through natural language.
    29
    44 npm
    MIT

  • MCP Sentinel

    pasihaka
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    Autonomous synthetic health checks, JSON-RPC 2.0 handshake validation, breaking schema drift detection, and credential leak scanning for remote MCP servers.
    5
    3
    5 npm
    1
    Apache 2.0

  • Etsy MCP Server

    aserper
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    Provides full access to the Etsy Open API v3 for both buyer browsing and seller shop management through 37 specialized tools. It enables users to manage listings, process orders, handle shipping, and access inventory data via secure OAuth 2.0 authentication.
    2
    41
    6
    MIT

  • Hookbase MCP Server

    HookbaseApp
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    Exposes the Hookbase webhook relay API as tools for AI assistants to manage sources, destinations, routes, and events through natural language. It enables monitoring webhook success rates, replaying failed deliveries, and managing localhost tunnels for development.
    4
    32
    204 npm
    MIT
  • qa-probe by LS-SIEM-LLP

    qa-probeofficial

    LS-SIEM-LLP
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    license
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    quality
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    Probes your live API and classifies why each endpoint failed (root cause, evidence, and a calibrated confidence level), exposed over MCP so your AI assistant debugs from evidence instead of guessing. Works with FastAPI, Express, Next.js, tRPC, and GraphQL.
    8
    10 npm
    2
    Apache 2.0
  • Gud API MCP Server by gudlab

    Gud API MCP Serverofficial

    gudlab
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    license
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    quality
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    Enables AI agents to create, run, and save API requests and collections as local Gud API files, which are git-committable and viewable in VS Code-compatible editors.
    8
    24 npm
    -
  • Specmatic MCP Server by specmatic

    Specmatic MCP Serverofficial

    specmatic
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    Exposes Specmatic's API contract testing, resiliency testing, and mocking capabilities to AI coding agents via natural language, enabling automated validation and simulation of API behaviors.
    3
    11 npm
    12
    MIT
  • fetchsandbox-mcp by fetchsandbox

    fetchsandbox-mcpofficial

    fetchsandbox
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    license
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    quality
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    A deterministic eval engine for coding agents. Your agent claims it fixed the bug—this checks it. The same scenario runs twice against a sandbox of the services your code calls, with failures injected on purpose. It must fail on the old code and pass on the new. The verdict is an exit code, not a model's opinion. Every run leaves a receipt.
    14
    790 npm
    1
    MIT

  • mcp-playwright

    aakashH242
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    🚀 Active Fork of executeautomation/mcp-playwright This repository is an actively maintained continuation of the original MCP Playwright server: >👉 https://github.com/executeautomation/mcp-playwright A Model Context Protocol server that provides browser automation capabilities using Playwright.
    6
    32
    11,239 npm
    1
    MIT

  • preflight-mcp

    gsmethells
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    maintenance
    TrustPilot for APIs, built for AI agents. Independent reliability ratings for APIs and MCP servers — look up trust scores, compare providers side by side, and leave reviews from real agent traffic.
    3
    1
    MIT

  • BaaS-MCP

    mbaas-inc
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    license
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    quality
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    maintenance
    Enables interaction with AIApp BaaS authentication system through keyword-based document search and automatic generation of framework-specific client code. Supports React, Next.js, Vue, and Vanilla JS with TypeScript integration and automatic project ID injection.
    3
    41 npm
    MIT

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