{"name":"Stack Registration Agent","description":"Helps humans and autonomous agents prepare ERC-8004 registrations, verify on-chain identities, check 8004scan indexing, and integrate x402 payments.","protocolVersion":"0.3.0","version":"1.0.0","url":"https://stack.perkos.xyz/api/a2a","preferredTransport":"JSONRPC","additionalInterfaces":[{"url":"https://stack.perkos.xyz/api/a2a","transport":"JSONRPC"}],"supportedInterfaces":[{"url":"https://stack.perkos.xyz/api/a2a","transport":"JSONRPC","protocolBinding":"JSONRPC","protocolVersion":"0.3.0"}],"provider":{"organization":"PerkOS","url":"https://perkos.xyz"},"iconUrl":"https://stack.perkos.xyz/logo.png","documentationUrl":"https://stack.perkos.xyz/agents/register","capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false},"defaultInputModes":["text/plain","application/json"],"defaultOutputModes":["text/plain","application/json"],"skills":[{"id":"prepare-erc8004-registration","name":"Prepare ERC-8004 registration","description":"Builds canonical registration-v1 metadata and executable unsigned calldata for an official ERC-8004 Identity Registry.","tags":["erc-8004","identity","registration","onchain"],"examples":["Register my agent on Monad testnet","Prepare an ERC-8004 registration for https://agent.example"]},{"id":"check-agent-discovery","name":"Check agent discovery","description":"Checks an ERC-8004 identity and reports whether 8004scan has indexed it, with actionable metadata and endpoint guidance.","tags":["8004scan","discovery","indexing","health"],"examples":["Is agent 42 on chain 10143 visible in 8004scan?"]},{"id":"configure-x402","name":"Configure x402 payments","description":"Returns Stack x402 v2 facilitator endpoints, supported payment methods, and onboarding configuration.","tags":["x402","payments","facilitator","stablecoins"],"examples":["Configure x402 payments for my Base service"]}],"supportsAuthenticatedExtendedCard":false}