{"agent_card":{"agent":{"agentPassportUrl":"https://gregers.dev/agent-passport/40","agentTokenId":40,"agentVerifyUrl":"https://gregers.dev/agent-verify?token_id=40","description":"Concordium-accountable agent using Crossmint as staging payment rail.","name":"Gregers"},"agentCardHash":"7f802b9a0c96e9a4db1070f6014d65b1b16d8610a19b53dd3000a3e60d84f183","boundaries":["This Agent Card is a Gregers public proof artifact; it is not a Crossmint or Mastercard partnership claim and not official Concordium/Foundation output.","Public proof over staging/testnet evidence; not production.","For this proof, Crossmint-style staging wallet/payment evidence covers the payment-rail side; Concordium is verification/accountability only.","No production payment, credential issuance, revocation, or Concordium transaction is triggered by reading this Agent Card."],"chosenIntegration":{"mcpPath":"phase_2_tool_metadata_references_same_agent_card_and_x402_binding","paymentBinding":"x402_metadata_hash_reference","primaryHome":"agent_card_extension","rationale":"Agent Card answers who this agent is before payment; x402 binds each payment request to that accountability object.","vcPath":"phase_2_optional_if_crossmint_wants_credential_native_issuance"},"extensions":{"crossmintNativeAlignmentUrl":"https://gregers.dev/api/crossmint-agent-wallet/x402-request","draftVcSchemaUrl":"https://gregers.dev/api/crossmint-agent-wallet/vc-schema","executableFlowUrl":"https://gregers.dev/api/crossmint-agent-wallet/executable-flow","paidResourceUrl":"https://gregers.dev/api/crossmint-agent-wallet/paid-resource","paidToolCallUrl":"https://gregers.dev/api/crossmint-agent-wallet/mcp-tool-call","paymentConfirmationUrl":"https://gregers.dev/api/crossmint-agent-wallet/payment-confirmation","pocManifestUrl":"https://gregers.dev/api/crossmint-agent-wallet/poc-manifest","vcIssuanceAdapterUrl":"https://gregers.dev/api/crossmint-agent-wallet/vc-issuance-adapter","vcRevocationModelUrl":"https://gregers.dev/api/crossmint-agent-wallet/vc-revocation-model","vcStatusUrl":"https://gregers.dev/api/crossmint-agent-wallet/vc-status/mock-gregers-agent-40","verificationExamplesUrl":"https://gregers.dev/api/crossmint-agent-wallet/verification-examples"},"name":"Gregers Crossmint \u00d7 Concordium A2A preview","payment":{"amount":"0.01","asset":"USDXM","network":"base-sepolia","rail":"crossmint","recipient":"0x90C2910BD7e7d275894F55AB26bdD0E96C3f44dE","walletAddress":"0x418Be0A9Dc3fE7D5530fbd4f26499dC55bE5BCe3","walletLocator":"0x418Be0A9Dc3fE7D5530fbd4f26499dC55bE5BCe3","walletProvider":"crossmint"},"schema":"gregers.crossmint-a2a-agent-card.v1","verification":{"concordium":{"agentTokenId":40,"credentialHash":"d5dcbc7b398336eb4bb34230444f0c68311a7e69b30a9ca1aac5ca91aca703e5","passportUrl":"https://gregers.dev/agent-passport/40","paymentRail":false,"role":"accountability_anchor","verifyUrl":"https://gregers.dev/agent-verify?token_id=40"},"crossmint":{"paymentSettlement":"server_verified_staging_transfer_with_optional_chain_rpc_confirmation","vcIntegrityModel":"credential_structure_issuer_signature_schema_expiration_revocation","walletControl":"crossmint_sdk_server_verified_attestation"}},"version":"2026-08-24.agent-card-primary-x402-binding","x402":{"challengeSemantics":"nonce_expiry_and_single_use_staging_preview","challengeUrl":"https://gregers.dev/api/crossmint-agent-wallet/x402-request","metadataBinding":"Every x402 challenge includes agentCardUrl, agentCardHash, accountabilityHash, and Concordium verify URL.","paymentHeader":"X-PAYMENT","settleUrl":"https://gregers.dev/api/crossmint-agent-wallet/x402-settle","supportsPaymentRequired":true}},"ok":true,"side_effects":"none"}