LocalFree

Shadowjoin MCP server

harsh-chandak/shadowjoin

Measure the matches your exact join is silently dropping, and get the rule that fixes each.

0 GitHub stars990 npm downloads / month
Source code

Install Shadowjoin in Claude Code

Claude Code
claude mcp add shadowjoin -e SHADOWJOIN_CONFIG=... -- npx -y shadowjoin
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "shadowjoin": {
      "command": "npx",
      "args": [
        "-y",
        "shadowjoin"
      ],
      "env": {
        "SHADOWJOIN_CONFIG": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Shadowjoin MCP server do?

Measure the matches your exact join is silently dropping, and get the rule that fixes each.

Is the Shadowjoin MCP server free?

Yes, most likely. Open source and no paid account or API key is mentioned in the listing. Check the provider for current pricing.

Does Shadowjoin run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Shadowjoin to Claude Code?

Run: claude mcp add shadowjoin -e SHADOWJOIN_CONFIG=... -- npx -y shadowjoin

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