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Capacity Attest

io.github.holistis/capacity-attest · v0.7.0

Signed delivery claims for x402 capacity trades: GPU-hours, storage, API credits, bandwidth.

Connect Runs on your machine

Terminal
claude mcp add capacity-attest -e CAPACITY_ATTEST_DATA_DIR=<CAPACITY_ATTEST_DATA_DIR> -- npx -y [email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "capacity-attest": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CAPACITY_ATTEST_DATA_DIR": "<CAPACITY_ATTEST_DATA_DIR>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "capacity-attest": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CAPACITY_ATTEST_DATA_DIR": "<CAPACITY_ATTEST_DATA_DIR>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "capacity-attest": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]"
      ],
      "env": {
        "CAPACITY_ATTEST_DATA_DIR": "<CAPACITY_ATTEST_DATA_DIR>"
      }
    }
  }
}

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
CAPACITY_ATTEST_DATA_DIR
Optional
Directory the append-only claims ledger (claims.jsonl) is written to and read from. Defaults to ./data inside the package.

Details

Package[email protected] (NPM, stdio)
First published29 Sep 2026
Last updated29 Sep 2026
Registry nameio.github.holistis/capacity-attest

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