FailTrace

MCP server · by LBarimi

Developer Tools npm v1.5.0

Debugging experiments for coding agents: reproduce failures and verify fixes with test evidence.

View source ↗ Website ↗ Generate config for multiple servers More servers

Install

Pin version registry version 1.5.0

npm
npx -y failtrace

npm
npx -y failtrace@1.5.0

Setup by client

Pick your client — the config below is generated for this server (local stdio). Copy respects the “Pin version” switch above.

claude_desktop_config.json

{
  "mcpServers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace"
      ]
    }
  }
}

{
  "mcpServers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace@1.5.0"
      ]
    }
  }
}

Format verified against the official Claude Desktop docs ↗.

terminal

claude mcp add failtrace -- npx -y failtrace

claude mcp add failtrace -- npx -y failtrace@1.5.0

Format verified against the official Claude Code docs ↗.

.cursor/mcp.json

{
  "mcpServers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace"
      ]
    }
  }
}

{
  "mcpServers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace@1.5.0"
      ]
    }
  }
}

Format verified against the official Cursor docs ↗.

.vscode/mcp.json

{
  "servers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace"
      ]
    }
  }
}

{
  "servers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace@1.5.0"
      ]
    }
  }
}

Format verified against the official VS Code docs ↗.

mcp_config.json

{
  "mcpServers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace"
      ]
    }
  }
}

{
  "mcpServers": {
    "failtrace": {
      "command": "npx",
      "args": [
        "-y",
        "failtrace@1.5.0"
      ]
    }
  }
}

Format verified against the official Windsurf docs ↗.

GitHub

最近更新于 52 天前 · MIT license

About this server

FailTrace Reproduce the failure. Check the fix. A test fails intermittently. Your coding agent changes the code. One passing retry leaves you guessing. FailTrace repeats the same check, saves a failing baseline, and checks the proposed fix against it. Use the CLI or MCP tools to get trial results, a…

Summary from the project README — github.com/LBarimi/FailTrace

Distributed as npm, listed under Developer Tools. Review our MCP security guide before granting access to real data.

Frequently asked questions

What does the FailTrace MCP server do?

How do I install FailTrace?

Run the install command shown above, then paste the config for your client (Claude Desktop, Claude Code, Cursor, VS Code or Windsurf) into its MCP settings and restart the client.

Is FailTrace free to use?

The MCP server itself is free to install. The source is public on https://github.com/LBarimi/FailTrace. Any third-party service it calls may require its own API key and account.

Which clients support FailTrace?

Any MCP-compatible client can use it, including Claude Desktop, Claude Code, Cursor, VS Code, Windsurf and custom agents.

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