# x402 Conformance

x402 payment safety checks: validate a 402 answer, prove a server never serves before settlement.

- Weekly downloads: 880
- GitHub stars: 1
- Health: active
- Repository: https://github.com/atsp-protocol/x402-conformance
- Registry names: io.github.atsp-protocol/x402-conformance
- Categories: Dev tools & GitHub, Payments & commerce
- Snapshot: 2026-10-29

## Install

```sh
npx -y x402-conformance-mcp
docker run -i --rm ghcr.io/atsp-protocol/x402-conformance:1.6.0
```

```json
{
  "mcpServers": {
    "x402-conformance": {
      "command": "npx",
      "args": [
        "-y",
        "x402-conformance-mcp"
      ]
    }
  }
}
```

Source: https://mcpmorning.com/mcp/atsp-protocol-x402-conformance/

## Transport

stdio