CryptoAPIs MCP x402-accept

A self-hosted proxy that places an x402 paywall in front of an existing MCP server, allowing merchants to charge AI agents per tool call without modifying the upstream server's code. It acts as an MCP server to the agent and an MCP client to the upstream server, mirroring tools and handling payments via CryptoAPIs.

Package and access

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

Community listingLocal stdioSource reviewed; not executedPublished by CryptoAPIs-io

You need:npm install -g @cryptoapis-io/mcp-x402-accept

Vendor documentation

What you can do with it

Charge AI agents per tool call on an existing MCP server
Implement non-custodial x402 paywall for MCP tools
Mirror MCP tools and handle payment verification

Source and maintenance

Community listingRegistry 0.1.1

mcp-registry: io.github.CryptoAPIs-io/mcp-x402-accept@0.1.1 Source repository

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.

@cryptoapis-io/mcp-x402-accept 0.1.1

npm

@cryptoapis-io/mcp-x402-accept package definition

{
  "version": "0.1.1",
  "transport": "stdio",
  "identifier": "@cryptoapis-io/mcp-x402-accept",
  "registryType": "npm"
}

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": {
    "cryptoapis-mcp-x402-accept": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept@0.1.1"
      ]
    }
  }
}

Cline

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

Cline configuration

{
  "mcpServers": {
    "cryptoapis-mcp-x402-accept": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept@0.1.1"
      ]
    }
  }
}

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": {
    "cryptoapis-mcp-x402-accept": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept@0.1.1"
      ]
    }
  }
}

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": {
    "cryptoapis-mcp-x402-accept": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-x402-accept@0.1.1"
      ]
    }
  }
}

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