How do I install x402check?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

Is x402check official?

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 55 (Fair). The formula is published on the methodology page.

MCPpedia

x402check MCP Server

Name: x402check MCP Server
Author: caiovicentino

Risk-check counterparties before an AI agent pays; pay x402 resources only after a verified allow

Tools Versions Alternatives

Registrycaiovicentino

55Fair

Install

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "caiovicentino-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@x402check/mcp@0.3.1"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "YOUR_X402CHECK_CREDIT_TOKEN",
        "X402CHECK_PAYER_KEY": "YOUR_X402CHECK_PAYER_KEY",
        "X402CHECK_BUDGET_USD": "1.00",
        "X402CHECK_PINNED_KEYS": "",
        "X402CHECK_MAX_PAYMENT_USD": "0.05"
      }
    }
  }
}

Install guide

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Environment

Name	Required	Notes
X402CHECK_CREDIT_TOKEN	No	Prepaid credit token (x402c_…, from POST https://x402check.xyz/v1/credits): $0.001 a check Secret.
X402CHECK_PAYER_KEY	No	Private key of a dedicated low-balance wallet: pays the x402 resources x402check_pay clears, and per-call checks without credits Secret.
X402CHECK_BUDGET_USD	No	Spend cap for this server process: the payer's spend (checks and resources), and separately what checks spend from prepaid credits
X402CHECK_PINNED_KEYS	No	Comma-separated RFC 7638 thumbprints of the attestation keys accepted (default: x402check's own keys, for its own issuer)
X402CHECK_MAX_PAYMENT_USD	No	The most a single payment may cost (a check or a resource)

x402check MCP Server — Install for Claude, Cursor & VS Code | MCPpedia

x402check MCP Server

Install

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