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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
    1,258
    21
    MIT
  • qualien-mcp by qualienai

    qualien-mcpofficial

    qualienai
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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
    0
    MIT

  • 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
    4
    MIT
  • Mockzilla by mockzilla

    Mockzillaofficial

    mockzilla
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    MCP server for mockzilla. Lets coding agents (Claude Desktop, Cursor, etc.) install the mockzilla CLI, stand up API mocks from an OpenAPI spec or a single endpoint, and — with an account — deploy hosted mocks on mockzilla.org.
    14
    62
    5
    MIT

  • 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
    211
    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
    22
    1
    Apache 2.0
  • Postman by postmanlabs

    Postmanofficial

    postmanlabs
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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
    6,091
    311
    Apache 2.0
  • qa-probe by LS-SIEM-LLP

    qa-probeofficial

    LS-SIEM-LLP
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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.
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    32
    2
    Apache 2.0
  • Gud API MCP Server by gudlab

    Gud API MCP Serverofficial

    gudlab
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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
    56
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  • fetchsandbox-mcp by fetchsandbox

    fetchsandbox-mcpofficial

    fetchsandbox
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    license
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    quality
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    Turn any OpenAPI 3.x spec into a runnable, stateful API environment for AI agents. Test real integration flows — multi-step workflows, persistent state, webhook delivery, retries, and edge cases — instead of guessing from docs or mocking endpoints. Generate committable markdown reports directly from Claude/Cursor. Includes 50+ pre-validated APIs like Stripe, GitHub, Twilio, OpenAI, and more.
    3
    115
    MIT
  • @restforge-dev/mcp-server by restforge

    @restforge-dev/mcp-serverofficial

    restforge
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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
    MIT

  • swag2mcp

    mmadfox
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    Turn any OpenAPI/Swagger/Postman spec into an MCP server — give your LLM live access to any API.
    6
    19
    Apache 2.0
  • Mercado Pago MCP Server by mercadolibre

    Mercado Pago MCP Serverofficial

    mercadolibre
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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

  • Hookbase MCP Server

    HookbaseApp
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    license
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    maintenance
    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
    325
    MIT

  • MCP Sentinel

    pasihaka
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    license
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    quality
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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
    13
    Apache 2.0
  • Kong Konnect MCP Server by Kong

    Kong Konnect MCP Serverofficial

    Kong
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    license
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    quality
    F
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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

  • 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
    18,122
    1
    MIT
  • Specmatic MCP Server by specmatic

    Specmatic MCP Serverofficial

    specmatic
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    license
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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
    21
    12
    MIT

  • mcp-yapi-server

    TStoneLee
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    Enables direct integration with YApi API documentation platform in MCP-compatible editors like Cursor, allowing users to query API details, list interfaces, and search endpoints by simply pasting YApi URLs.
    5
    17
    MIT

  • Apifox MCP Server

    Juzisuan965
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    Enables AI assistants to fetch and understand API endpoint definitions from Apifox projects in real-time. Supports retrieving complete API specifications including request methods, parameters, headers, and response schemas to improve development efficiency and code generation quality.
    1
    21
    4
    MIT

  • Binance MCP Server

    ethancod1ng
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    license
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    A Model Context Protocol server that provides Claude Code with seamless access to Binance exchange API functionality for market data retrieval, account management, and trading operations.
    10
    68
    32
    MIT

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