doubletap

GlobalMatchHub/doubletap
★ 0 stars TypeScript Code/Dev Tools Updated 1d ago
A conformance harness for MCP servers: when a tool call is retried, does the side effect happen once, twice, or half?
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Quick Install

Copy the config for your editor. Some servers may need additional setup — check the README.

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "doubletap": {
      "command": "npx",
      "args": [
        "-y",
        "GlobalMatchHub/doubletap"
      ]
    }
  }
}

README Excerpt

**A conformance harness for MCP servers. It answers one question: when a tool call is retried, does the side effect happen once, twice, or half?** Doubletap drives someone else's MCP server through the failures that actually happen in production, then reads the server's own state to see what it did. It never calls a model, and it runs every server offline inside a `sandbox-exec` jail, so a full census costs nothing but CPU.

Tools (5)

appliedconcurrencyidempotencyresiduetorn