x402-conformance MCP

An MCP server for x402 payment safety checks that allows agents to validate 402 answers and prove a server never serves content before settlement. It runs conformance checks against bundled mocks or live endpoints without paying, signing, or touching mainnet.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by atsp-protocol

Vendor documentation

What you can do with it

Validate 402 payment answers
Prove server compliance with settlement rules
Run conformance tests against mock servers
Test live payment endpoints

Source and maintenance

Community listingRegistry 1.6.0

mcp-registry: io.github.atsp-protocol/x402-conformance@1.6.0 Source repository Project website

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

ghcr.io/atsp-protocol/x402-conformance:1.6.0

oci

ghcr.io/atsp-protocol/x402-conformance:1.6.0 package definition

{
  "transport": "stdio",
  "identifier": "ghcr.io/atsp-protocol/x402-conformance:1.6.0",
  "registryType": "oci"
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "x402-conformance-mcp-1-6-0": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/atsp-protocol/x402-conformance:1.6.0"
      ]
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "x402-conformance-mcp-1-6-0": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/atsp-protocol/x402-conformance:1.6.0"
      ]
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "x402-conformance-mcp-1-6-0": {
      "type": "stdio",
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/atsp-protocol/x402-conformance:1.6.0"
      ]
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "x402-conformance-mcp-1-6-0": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/atsp-protocol/x402-conformance:1.6.0"
      ]
    }
  }
}

Let your agent find its tools

Find servers like x402-conformance MCP from your agent. Add Koskamo once to search the index for endpoints, access requirements, and client setup. Public discovery needs no key.

Connect Koskamo Explore workflows

See all 507