Koskamo

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 integrates with MCP clients like Claude and Cursor to run conformance checks against payment-enabled APIs.

Package and access

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

x402 Conformance MCP logo, by atsp-protocolCommunity listingLocal stdioSource reviewed; not executedPublished by atsp-protocol
Vendor documentation

What you can do with it

  • Validate 402 payment answers
  • Prove server never serves before settlement
  • Run conformance checks via MCP clients

Source and maintenance

Community listingRegistry 1.6.0
mcp-registry: io.github.atsp-protocol/x402-conformance@1.6.0Source repositoryProject website
Maintenance checked

Packages and installation

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

x402-conformance-mcp 1.6.0

npm
x402-conformance-mcp package definition
{
  "version": "1.6.0",
  "transport": "stdio",
  "identifier": "x402-conformance-mcp",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org"
}

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": {
      "command": "npx",
      "args": [
        "-y",
        "x402-conformance-mcp@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": {
      "command": "npx",
      "args": [
        "-y",
        "x402-conformance-mcp@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": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "x402-conformance-mcp@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": {
      "command": "npx",
      "args": [
        "-y",
        "x402-conformance-mcp@1.6.0"
      ]
    }
  }
}

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