generated: '2026-09-05'
method: probed
source: https://kronos.seshat.markets/.well-known/agent-card.json
discovery:
  path: /.well-known/agent-card.json
  canonical: true
  host: kronos.seshat.markets
  legacy_path: /.well-known/agent.json
  legacy_status: 200
  legacy_file: seshat-markets-agent-legacy.json
x-evidence:
  fetched: '2026-09-05'
  url: https://kronos.seshat.markets/.well-known/agent-card.json
  http_status: 200
  content_type: application/json
  file: seshat-markets-agent-card.json
grade: flavored
grade_basis: >-
  The canonical card fails a hard A2A 1.0.0 check: capabilities is an empty ARRAY where the
  spec requires an object. It also carries no top-level name or url (identity lives in
  display_name/agent_id instead), and its openapi_url points at a predict endpoint rather than
  the OpenAPI document. Its metadata says it was generated by the "A2A Global Registry".
  Oddly, the LEGACY card at /.well-known/agent.json is the better-formed one: name present,
  capabilities is a proper object {streaming, pushNotifications, stateTransitionHistory},
  protocolVersion "0.3", skills is an array - near-conformant, missing only optional
  preferredTransport. The provider serves its best card on the deprecated path.
deviations:
- 'canonical card: capabilities is [] (array) - A2A requires an object (hard failure)'
- 'canonical card: no top-level name field (display_name carries the identity)'
- 'canonical card: no top-level url field (agent_id and supportedInterfaces carry endpoints)'
- 'canonical card: openapi_url = https://kronos.seshat.markets/api/feeds/kronos/predict/btc_usdt - a data endpoint, not the spec (the real spec is at /openapi.json)'
- 'both cards: no preferredTransport (optional)'
- 'legacy card at /.well-known/agent.json is near-conformant: capabilities is an object, name present, protocolVersion 0.3, skills array'
skills_declared:
- kronos-predict (Price Path Forecast)
- kronos-signals (Trading Signals)
- kronos-calibration (Calibration Metrics)
interfaces:
- url: https://kronos.seshat.markets/a2a
  protocolBinding: JSONRPC
  protocolVersion: '1.0'
  probe: >-
    POST tools/list (a non-A2A method) answered HTTP 200 with a proper JSON-RPC -32601
    "Method not found" - a live JSON-RPC server, not a shell.
- url: https://kronos.seshat.markets/api/feeds/kronos/predict/btc_usdt
  protocolBinding: HTTP+JSON
  protocolVersion: '0.3'
payment:
  protocol: x402
  payTo: REDACTED-SEE-LIVE-CARD
  networks:
  - eip155:8453 (Base mainnet)
  - solana mainnet
  note: payTo address and networks are in the verbatim saved card files.