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x402check

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

TypeScript

★ 12 stars Last pushed 2026-11-08 License: MIT

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Review any command before running it. Package names and URLs come from the server's own registry entry.

Package (npm 0.3.3)

npx -y @x402check/[email protected]

Or add to your MCP client config:

{
  "mcpServers": {
    "jev-risk-check-provider": {
      "command": "npx",
      "args": [
        "-y",
        "@x402check/[email protected]"
      ],
      "env": {
        "X402CHECK_CREDIT_TOKEN": "<YOUR_VALUE>",
        "X402CHECK_PAYER_KEY": "<YOUR_VALUE>",
        "X402CHECK_BUDGET_USD": "<YOUR_VALUE>",
        "X402CHECK_PINNED_KEYS": "<YOUR_VALUE>",
        "X402CHECK_MAX_PAYMENT_USD": "<YOUR_VALUE>"
      }
    }
  }
}

X402CHECK_CREDIT_TOKEN secret — Prepaid credit token (x402c_…, from POST https://x402check.xyz/v1/credits): $0.001 a check
X402CHECK_PAYER_KEY secret — Private key of a dedicated low-balance wallet: pays the x402 resources x402check_pay clears, and per-call checks without credits
X402CHECK_BUDGET_USD — Spend cap for this server process: the payer's spend (checks and resources), and separately what checks spend from prepaid credits
X402CHECK_PINNED_KEYS — Comma-separated RFC 7638 thumbprints of the attestation keys accepted (default: x402check's own keys, for its own issuer)
X402CHECK_MAX_PAYMENT_USD — The most a single payment may cost (a check or a resource)