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Proof Layer

io.github.World-999-Labs/proof-layer ยท v1.0.1

Signed, hash-chained provenance receipts for AI agent actions.

Connect Runs on your machine

Terminal
claude mcp add proof-layer -e PROOF_LAYER_API_KEY=<PROOF_LAYER_API_KEY> -e PROOF_LAYER_API_URL=<PROOF_LAYER_API_URL> -e PROOF_LAYER_TELEMETRY=<PROOF_LAYER_TELEMETRY> -- npx -y @proof-layer/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "proof-layer": {
      "command": "npx",
      "args": [
        "-y",
        "@proof-layer/[email protected]"
      ],
      "env": {
        "PROOF_LAYER_API_KEY": "<PROOF_LAYER_API_KEY>",
        "PROOF_LAYER_API_URL": "<PROOF_LAYER_API_URL>",
        "PROOF_LAYER_TELEMETRY": "<PROOF_LAYER_TELEMETRY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "proof-layer": {
      "command": "npx",
      "args": [
        "-y",
        "@proof-layer/[email protected]"
      ],
      "env": {
        "PROOF_LAYER_API_KEY": "<PROOF_LAYER_API_KEY>",
        "PROOF_LAYER_API_URL": "<PROOF_LAYER_API_URL>",
        "PROOF_LAYER_TELEMETRY": "<PROOF_LAYER_TELEMETRY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "proof-layer": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@proof-layer/[email protected]"
      ],
      "env": {
        "PROOF_LAYER_API_KEY": "<PROOF_LAYER_API_KEY>",
        "PROOF_LAYER_API_URL": "<PROOF_LAYER_API_URL>",
        "PROOF_LAYER_TELEMETRY": "<PROOF_LAYER_TELEMETRY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
PROOF_LAYER_API_KEY
Required, secret
Your Proof Layer API key from https://prooflayer.world999labs.com/dashboard/keys
PROOF_LAYER_API_URL
Optional
Override the default API endpoint (default: https://prooflayer.world999labs.com)
PROOF_LAYER_TELEMETRY
Optional
Set to 'off' to disable anonymous usage telemetry (default: on)

Details

Package@proof-layer/[email protected] (NPM, stdio)
First published3 May 2026
Last updated3 May 2026
Registry nameio.github.World-999-Labs/proof-layer

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