# x402 MCP Proxy

> Use this tool when you need to automate x402 payments and handle HTTP 402 responses from remote servers. It connects to remote MCP servers, automatically signing USDC on-chain to facilitate seamless transactions. Ideal for applications requiring efficient payment processing and error handling for 402 status codes.

Canonical page: https://skillsregistry.net/skills/coinmarketcap-official-x402-mcp-proxy  
JSON: https://api.skillsregistry.net/v1/skills/coinmarketcap-official-x402-mcp-proxy

## Description

A local MCP proxy that connects to remote MCP servers and automatically handles x402 payments, signing USDC on-chain when a tool returns HTTP 402.

## Trust

- **Trust score (0–1):** 0.68
- **Verification tier:** scanned
- **Last scanned:** 2026-08-31

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** finance
- **Updated:** 2026-08-31

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/vm3mm495o6)
- **Repository:** <https://github.com/OpenCMC/x402-mcp-proxy>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "coinmarketcap-official-x402-mcp-proxy"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/coinmarketcap-official-x402-mcp-proxy` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/coinmarketcap-official-x402-mcp-proxy/pull`

---
SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt