Agent Transaction Trust

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "agent-transaction-trust": {
      "type": "http",
      "url": "https://json-repair-api-9ybv.onrender.com/mcp"
    }
  }
}

10 tools

• get_trust_manifest

  Free, read-only entry point. Call this first when deciding whether Agent Transaction Trust fits an x402 purchase. Returns capabilities, supported authority modes, proof key, price/network information, and the endpoints needed for transaction clearance, authorization, and…

• create_ap2_challenge

  Free prerequisite for AP2-native transaction clearance or authorization. Call before clearance_x402_ap2 or authorize_x402_ap2, bind the returned challenge into the AP2 Payment Mandate proof, then pass that challenge token as ap2_authority.challenge_token. The challenge is…

• verify_trust_token

  Free, read-only token check. Use this to validate the signature and expiry of a Trust policy, authorization token, transaction clearance token, or settlement receipt; it does not perform on-chain settlement verification.

• verify_settlement

  Free post-payment step. Call only after the merchant x402 payment for a previously approved authorization or transaction clearance. Verifies the Base USDC settlement on-chain and, when it matches the authorization, returns a signed settlement receipt. The authorization_token may…

• transaction_preflight

  Paid pre-sign simulation for an unsigned Base transaction. Call immediately before the wallet signs. Returns signed EXECUTE, REVIEW or BLOCK with current-state simulation, gas, revert, balance, nonce and approval-risk evidence. Machine price: $0.002 via x402.

• token_transaction_verdict

  Paid Base token safety check for autonomous agents. Call immediately before buying or swapping an unfamiliar ERC-20 token to screen honeypot, sell-restriction, tax, blacklist/pause and admin-risk signals. Returns signed ALLOW, WARN or BLOCK evidence. Machine price: $0.005 via…

• firewall_before_payment

  Paid automatic before-payment gate for x402 clients. Call after receiving the merchant's real PAYMENT-REQUIRED challenge but before creating/signing the merchant payment. Returns firewall_action ALLOW, REVIEW or BLOCK plus signed proof. ALLOW means the wallet/client may proceed…

• preflight_x402

  Paid public preflight for an autonomous x402 payment. No account, API key, policy token, or AP2 mandate is required. Submit the merchant's real PAYMENT-REQUIRED challenge and the exact intended HTTP request. Returns preflight_decision APPROVED, REVIEW or DENIED plus a signed…

• clearance_x402_ap2

  Paid transaction-clearance decision for an autonomous x402 purchase. Use after create_ap2_challenge and after receiving the merchant's real PAYMENT-REQUIRED challenge, but before paying the merchant. Verifies AP2 v0.2 authority, exact request/challenge integrity, and public…

• authorize_x402_ap2

  Paid pre-payment trust gate. Use after create_ap2_challenge and after receiving the merchant's real x402 PAYMENT-REQUIRED challenge, but before paying the merchant. Verifies AP2 v0.2 authority and binds approval to the exact merchant challenge and HTTP request. On approval…

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