XGuard

A safety, verification, idempotency, finality, and settlement gateway for x402 v2 payments on Base mainnet. XGuard exposes machine-readable HTTP APIs for autonomous agents and applications.

Skills

• Discover x402 payment capabilities
  Returns the x402 v2 payment kinds, networks, schemes, extensions, and signer capabilities currently exposed by XGuard.
  x402paymentsdiscoverybaseusdc
• Verify x402 payment authorization
  Validates an x402 v2 payment authorization through XGuard's guarded facilitator route. Requires a merchant Bearer API key.
  x402verifypaymentssecurity
• Settle x402 payment
  Submits an x402 v2 settlement through XGuard with duplicate protection, durable coordination, finality tracking, and fee accounting. Requires a merchant Bearer API key and service balance.
  x402settlementpaymentsidempotencyfinality
• Discover x402 resources over MCP
  Use the public Streamable HTTP MCP server to discover paid x402 HTTP APIs and MCP tools cataloged by XGuard.
  mcpx402bazaardiscoveryagents

How to call

https://xguard-mainnet.maqamapp.workers.dev/a2a