Servidor MCP

x402 Merchant Check

com.gradientdecisions/merchant-check
Cripto y Web3 Pagos y fintech Seguridad Público y accesible MCP 2025-11-25

Qué hace este MCP

Assesses observable on-chain payment behavior for x402 merchants on Base and Solana and returns a payment trust recommendation.

check_merchant
Before paying an unfamiliar merchant via x402, including one just discovered through a marketplace like Coinbase's x402 Bazaar, call this for a machine-readable assessment of their observable on-chain payment behavior, on Base or Solana. Returns a `recommendation` (PROCEED / CAUTION / INSUFFICIENT_SIGNAL) a payment policy can branch on directly, plus supporting evidence: trust tier, confidence, payer diversity, transaction history, category (data_api/compute/content_generation/financial_data/storage/other), known platform URL(s), and the merchant's own advertised price(s) compared against category peers, with no caller-supplied price required for that. This is decision support drawn from observed behavior, not a certification. PROCEED means the available evidence doesn't show cause for concern, not a guarantee of safety. INSUFFICIENT_SIGNAL means there isn't enough history to say either way, distinct from an actual concern. Add a specific quoted price to also check that exact figure against comparable sellers. $0.01 USDC per check, paid via x402.
Esquema de entrada
{'type': 'object', '$schema': 'http://json-schema.org/draft-07/schema#', 'required': ['merchant_wallet_address'], 'properties': {'asset': {'type': 'string', 'description': "Optional. Payment asset/token from the 402 response's accepts[].asset. Not required to score."}, 'price': {'type': 'number', 'description': 'Quoted price in USD-equivalent, if checking fairness'}, 'amount': {'type': 'string', 'description': "Optional. Atomic payment amount from the 402 response's accepts[].amount, if preferred over `price`. Not required to score."}, 'network': {'type': 'string', 'description': 'Optional. CAIP-2 network id from the 402 response\'s accepts[].network (e.g. "eip155:8453"), if already on hand. Not required to score.'}, 'service_url': {'type': 'string', 'description': 'Optional. The resource/service URL the agent was trying to reach. Not required to score.'}, 'resource_type': {'type': 'string', 'description': "Deprecated, accepted but unused. Price-fairness now compares against the merchant's own on-chain-derived category automatically, no need to supply this."}, 'merchant_wallet_address': {'type': 'string', 'description': "Merchant's receiving wallet address: a Base (0x...) or Solana (base58) address. Usually extractable directly from a 402 Payment Required response's accepts[].payTo."}}, 'additionalProperties': False}
Añadido
check_merchant
17 de September de 2026 a las 12:35