Code and development

APIs and testing: tools for AI agents

Explore, call and test APIs from OpenAPI descriptions and Postman collections. The best matches among the MCP servers, command-line tools, web APIs and Claude Code plugins AptLynx checks every night, working ones first.

MCP servers

• Postman MCP Server Verified publisher · Needs a sign-in or key
  Give your AI agents trusted access to the full Postman platform.
• Openapi® Verified publisher · Needs a sign-in or key
  Official Openapi® MCP server: Italian company data, PEC, SMS, vehicles, geocoding and more APIs.
• Pipehero: import_api_spec Verified publisher · Working at last check
  Import an OpenAPI 3.x document (as JSON), a Postman v2.x collection (JSON) or a curl command into a new collection, or into `collection_id`. All or nothing,…
• Keploy Verified publisher · Needs a sign-in or key
  End-to-end API testing — generate and run tests from OpenAPI, curl, Postman, or real user traffic.
• com.mcparmory/postman Verified publisher · Runs on your computer
  Create, organize, and manage API collections, specifications, and team workspaces
• MCP API Translator Runs on your computer
  Turn OpenAPI / Postman specs into runnable MCP servers, or serve any API as live MCP tools.
• Mockbird: import_data Working at last check
  Create a live mock API from existing artifacts. Auto-detects: OpenAPI 3.x / Swagger 2.0 spec (JSON or YAML) → resources with realistic seeded data, and…
• Intodns Scanner: read_llm_discovery Verified publisher · Working at last check
  Read-only fetch of an IntoDNS.ai LLM/agent discovery file: llms.txt (canonical agent index), llms-full.txt (full prompt-ready context), llms.json (structured…
• Apis Io: find_postman Verified publisher · Working at last check
  Postman collections across the catalog. Postman-format collections (by reference). Filter by q / tags / providers; include=["content"] inlines bodies. Use…
• io.github.vpatser1/mcp-api-doc-generator Runs on your computer
  Generate OpenAPI 3.1 specs, endpoint docs, TypeScript SDKs, and test suites from code
• io.github.cocaxcode/api-testing-mcp Runs on your computer
  MCP server for API testing. 35 tools: HTTP, assertions, flows, OpenAPI, collections.
• Publicapis Directory: get_api Verified publisher · Working at last check
  Everything about one API by slug (from search_apis): documentation summary, endpoints, auth, pricing and links. Use before writing integration code.
• mcpsmith Runs on your computer
  Curated MCP tools from OpenAPI, websites, apps, Postman, cURL or SQL; your agent designs them.

Command-line tools

• atac
  Simple API client (Postman-like) in your terminal
• prism-cli
  Set of packages for API mocking and contract testing cli hacktoberfest openapi api-testing http-proxy mocking prism swagger mock-server oas openapi3…
• newman
  Command-line collection runner for Postman newman postman api testing ci rest-client rest
• Postman CLI
  CLI for command-line API management on Postman debug develop development automation network api interface request response
• Voiden
  Voiden (Windows package; no description in the winget index) automation cli api javascript testing opensource offline-first scripting openapi websocket…
• @postman/postman-mcp-server
  Postman MCP Server — connect AI agents (Claude Code, Cursor, VS Code Copilot, Gemini CLI) to your Postman collections, specifications, and environments via…

Web APIs

• Enode API
  Download OpenAPI 3.0 Specification (/OpenAPI-Enode-v1.4.0.json) Download Postman Collection (/Postman-Enode-v1.4.0.json) The Enode API is designed to make…
• OpenAPI space
  This is the API for OpenAPI space. developer_tools
• OpenAI API
  APIs for sampling from and fine-tuning language models machine_learning
• NetworkExperiments
  These are the Network Experiment APIs. cloud
• Postman API
  The Postman API allows you to programmatically access data stored in Postman account with ease. The easiest way to get started with the API is to click the…
• DriveBC's Open511 API
  This API is DriveBC's implementation of the Open511 specification. It provides information about known road events (traffic accidents, construction, etc.) in…

Claude Code plugins

• postman
  Work with Postman from your agent: bootstrap a repo's Postman setup, mock an API before it's implemented, run collection and governance checks in CI, monitor…
• 42crunch-api-security-testing
  Automate API security directly in Claude Code with 42Crunch - automatically audit OpenAPI specs, detect vulnerabilities aligned with OWASP API Security risks…
• example-skills
  Collection of example skills demonstrating various capabilities including skill creation, MCP building, visual design, algorithmic art, internal…
• crowdstrike-falcon-foundry
  CrowdStrike Falcon Foundry development skills for building cybersecurity applications on the Falcon platform. Includes UI development, collections, functions,…

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Listing text is written by each tool's maker; AptLynx lists tools and does not vouch for them.