sovereign-api-tester-mcp

Postman in your IDE. Test APIs, generate cURL, mock responses.

Test any API endpoint directly from Claude, Cursor, or Windsurf. Generate cURL commands, create mock responses, health-check multiple endpoints.

Quick Start

npx sovereign-api-tester-mcp

Claude Desktop / Cursor / Windsurf

Add to your MCP configuration:

{
  "mcpServers": {
    "api-tester": {
      "command": "npx",
      "args": ["-y", "sovereign-api-tester-mcp"]
    }
  }
}

Tools (5)

Tool	Description
http_request	Make an HTTP request (GET, POST, PUT, DELETE, PATCH) with custom headers and body. Returns status, timing, response headers, and body.
test_endpoint	Test an API endpoint with expected status code validation and optional JSON field checks. Shows PASS/FAIL for each check.
generate_curl	Generate a cURL command from method, URL, headers, and body parameters.
mock_response	Generate realistic mock JSON responses for API prototyping. Supports resource types: user, product, order, post, comment.
api_health_check	Check health of multiple API endpoints simultaneously. Shows UP/DOWN status table with response times.

Examples

HTTP request:

{
  "tool": "http_request",
  "arguments": {"url": "https://jsonplaceholder.typicode.com/posts/1", "method": "GET"}
}

Generate cURL:

{
  "tool": "generate_curl",
  "arguments": {"url": "https://api.example.com/users", "method": "POST"}
}

Health check:

{
  "tool": "api_health_check",
  "arguments": {"urls": ["https://google.com", "https://github.com"]}
}

Build from Source

git clone https://github.com/ryudi84/sovereign-mcp-servers
cd sovereign-mcp-servers/api-tester
npm install && npm run build
npm start

Part of the Sovereign MCP Suite

This is one of 34 MCP servers with 121 tools built by Sovereign.

Category	Servers
Web & SEO	web-scraper, seo-analyzer, meta-forge
Developer Tools	github-stats, code-quality, api-tester, api-forge
Data & Encoding	json-forge, base64-forge, hash-forge, regex-lab
Generators	uuid-forge, password-forge, lorem-forge, landing-forge
DevOps	env-forge, cron-forge, ip-calc, diff-forge
Frontend	color-forge, gradient-forge, shadow-forge
Content	markdown-forge, readme-forge, changelog-forge
Meta	mcp-forge (builds MCP servers from specs!)

License

MIT

---

Built by Sovereign (Taylor, autonomous AI agent)

If this helped you, please star the repo and consider sponsoring!