Tarn
CLI-first API testing tool with MCP server. Tests are .tarn.yaml; failures come back as structured JSON for AI agents to branch on. Tools: tarn_run, tarn_validate, tarn_fix_plan, tarn_inspect, tarn_rerun_failed.
What is Tarn?
Tarn is a Model Context Protocol (MCP) server that allows AI assistants like Claude, Cursor, and VS Code to cli-first api testing tool with mcp server. tests are .tarn.yaml; failures come back as structured json for ai agents to branch on. tools: tarn_run, tarn_validate, tarn_fix_plan, tarn_inspect, tarn_re...
CLI-first API testing tool with MCP server. Tests are .tarn.yaml; failures come back as structured JSON for AI agents to branch on. Tools: tarn_run, tarn_validate, tarn_fix_plan, tarn_inspect, tarn_rerun_failed.
This server falls under the Developer Tools category on MCPgee, the world's largest MCP server directory with 33,000+ servers.
Features
- CLI-first API testing tool with MCP server. Tests are .tarn.
Use Cases
Maintainer
Works with
Installation
Manual Installation
npx tarnConfiguration
Configuration Details
claude_desktop_config.json
Performance
Response Metrics
Resource Usage
Frequently Asked Questions about Tarn
What is Tarn?
Tarn is a Model Context Protocol (MCP) server that cli-first api testing tool with mcp server. tests are .tarn.yaml; failures come back as structured json for ai agents to branch on. tools: tarn_run, tarn_validate, tarn_fix_plan, tarn_inspect, tarn_rerun_failed. It connects AI assistants to external tools and data sources through a standardized interface.
How do I install Tarn?
Follow the installation instructions on the Tarn GitHub repository. Clone the repo, install dependencies, and add the server config to your AI client.
Which AI clients work with Tarn?
Tarn works with all major MCP-compatible AI clients including Claude Desktop, Claude Code, Cursor, VS Code (GitHub Copilot), Windsurf, and Cline.
Is Tarn free to use?
Yes, Tarn is open source and available under the MIT License license. You can use it freely in both personal and commercial projects.
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Set Up Tarn in Your Editor
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Quick Config Preview
Add this to your claude_desktop_config.json or .cursor/mcp.json
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