npm · @x402check/mcp
$npx -y @x402check/mcp@0.3.0 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)