{"$schema":"https://wellknown.network/schemas/agent-record-v1.json","schemaVersion":"1","id":"ag_7wbqfv5ebqa4","handle":"lembagang-headless-oracle","url":"https://wellknown.network/agents/lembagang-headless-oracle","links":{"self":"https://wellknown.network/agents/lembagang-headless-oracle/record.json","html":"https://wellknown.network/agents/lembagang-headless-oracle","markdown":"https://wellknown.network/agents/lembagang-headless-oracle/record.md","api":"https://wellknown.network/api/v1/agents/lembagang-headless-oracle","status":"https://wellknown.network/api/v1/agents/lembagang-headless-oracle/status","claim":"https://wellknown.network/agents/lembagang-headless-oracle/claim","claimApi":"https://wellknown.network/api/v1/claims","claimDescriptor":"https://wellknown.network/agents/lembagang-headless-oracle/claim.json","badge":"https://wellknown.network/agents/lembagang-headless-oracle/badge.svg","openapi":"https://wellknown.network/openapi.json"},"ard":{"identifier":"urn:air:headlessoracle.com:agent:lembagang-headless-oracle","type":"application/a2a-agent-card+json"},"kind":"agent","declared":{"name":"Headless Oracle","summary":"Proposed reference implementation of environment.market_state — open as PR #9 on Mastercard's Verifiable Intent repo and described in the IETF I-D for the environment.* family. Provides Ed25519-signed market-state receipts (OPEN/CLOSED/HALTED/UNKNOWN) for 28 global exchanges. Autonomous agents gate…","description":"Proposed reference implementation of environment.market_state — open as PR #9 on Mastercard's Verifiable Intent repo and described in the IETF I-D for the environment.* family. Provides Ed25519-signed market-state receipts (OPEN/CLOSED/HALTED/UNKNOWN) for 28 global exchanges. Autonomous agents gate trade execution on cryptographically verified market state. Composes with environment.wallet_state for multi-venue mandates. Fail-closed: UNKNOWN always means CLOSED.","publisher":{"name":"LembaGang","url":"https://headlessoracle.com"},"homepage":"https://headlessoracle.com/docs","repository":null,"version":"v5.0","license":null,"protocols":["a2a"],"tags":["finance","market-data","safety","signed-receipt","fail-closed","schedule","market-hours","exchange-directory","verification","cryptography","trust","rest-only"],"pricing":null,"endpoints":[{"url":"https://headlessoracle.com","type":"a2a","auth":"none","probeable":true}],"skills":[{"id":"get_market_status","name":"Get Market Status","tags":["finance","market-data","safety","signed-receipt","fail-closed"],"description":"Pre-trade verification gate: returns Ed25519-signed market-state receipt (OPEN/CLOSED/HALTED/UNKNOWN) for any of 28 global exchanges. Use before any financial execution, capital commitment, or market-dependent workflow. UNKNOWN and HALTED must be treated as CLOSED (fail-closed). Receipt includes attestation_ref (signature) for x402 payment flows and audit trails. 60-second TTL."},{"id":"get_market_schedule","name":"Get Market Schedule","tags":["finance","schedule","market-hours"],"description":"Returns holiday-aware trading session schedule: next open/close UTC times, market hours, trading hours, exchange operating hours, holiday calendar, lunch break windows (XJPX/XHKG/XSHG/XSHE), and session status across 28 exchanges."},{"id":"list_exchanges","name":"List Exchanges","tags":["finance","exchange-directory"],"description":"Returns directory of all 28 supported exchanges with MIC codes, names, IANA timezones, and exchange operating hours metadata. Use at agent startup to discover supported markets before calling get_market_status or get_market_schedule."},{"id":"verify_receipt","name":"Verify Receipt Signature","tags":["finance","verification","cryptography","trust","rest-only"],"description":"Verifies Ed25519 cryptographic proof on a Signed Market Attestation receipt — confirms genuine pre-trade verification attestation, receipt authenticity, and signature validity. REST endpoint for test harnesses and SDK authors; agents SHOULD prefer offline verification with the published public key."},{"id":"get_sandbox_key","name":"Get Sandbox Key","tags":[],"description":"Provision a 7-day API key (200 calls). POST { \"email\": \"you@example.com\" } — email required, one per address."}],"tools":["Get Market Status","Get Market Schedule","List Exchanges","Verify Receipt Signature","Get Sandbox Key"],"extra":{"inputModes":["application/json"],"outputModes":["application/json"],"capabilities":{"streaming":false,"pushNotifications":false,"stateTransitionHistory":false}},"attribution":{"kind":"a2a_card","name":"a2a_card","summary":"a2a_card","version":"a2a_card","description":"a2a_card","homepageUrl":"a2a_card","publisherUrl":"a2a_card","publisherName":"a2a_card"}},"derived":{"capabilities":[{"slug":"finance.markets","name":"Markets & Trading","confidence":1,"provenance":"derived"},{"slug":"infra.browser-automation","name":"Browser Automation","confidence":0.75,"provenance":"derived"},{"slug":"dev.filesystem","name":"Filesystem","confidence":0.694,"provenance":"derived"},{"slug":"ai.agent-discovery","name":"Agent Discovery","confidence":0.694,"provenance":"derived"},{"slug":"code.execution","name":"Code Execution","confidence":0.51,"provenance":"derived"}],"categories":["ai","code","dev","finance","infra"]},"observed":{"status":"unknown","statusReason":"Not checked yet.","lastOkAt":null,"lastProbedAt":null,"statusComputedAt":null,"reliability30d":null,"latestObservations":[{"at":"2026-09-07T00:20:08.543Z","kind":"a2a_card","ok":true,"httpStatus":200,"latencyMs":12,"error":null,"detail":{"name":"Headless Oracle","signed":false,"version":"v5.0","cardPath":"/.well-known/agent-card.json","skillCount":5}},{"at":"2026-09-06T18:25:00.469Z","kind":"a2a_card","ok":true,"httpStatus":200,"latencyMs":27,"error":null,"detail":{"name":"Headless Oracle","signed":false,"version":"v5.0","cardPath":"/.well-known/agent-card.json","skillCount":5}},{"at":"2026-09-06T12:25:23.672Z","kind":"a2a_card","ok":true,"httpStatus":200,"latencyMs":38,"error":null,"detail":{"name":"Headless Oracle","signed":false,"version":"v5.0","cardPath":"/.well-known/agent-card.json","skillCount":5}}],"tools":null,"package":null},"verification":{"claimed":false,"claimedAt":null,"proofs":[]},"provenance":{"sources":[{"source":"a2a_card","key":"https://headlessoracle.com/.well-known/agent-card.json","url":"https://headlessoracle.com/.well-known/agent-card.json","firstSeenAt":"2026-09-06T11:24:59.104Z","fetchedAt":"2026-09-06T11:24:59.104Z","normalizedAt":"2026-09-06T11:24:59.104Z"}]},"firstSeenAt":"2026-09-06T11:24:59.104Z","updatedAt":"2026-09-06T11:26:06.733Z"}