generated: '2026-09-01'
method: probed
source: https://docs.0xarchive.io/.well-known/agent-card.json
card: a2a/0xarchive-agent-card.json
discovery:
  path: /.well-known/agent-card.json
  canonical: true
  host: docs.0xarchive.io
  note: >-
    The card is served from the developer-portal host, not the apex. The apex (0xarchive.io),
    the API host (api.0xarchive.io) and the MCP host (mcp.0xarchive.io) were all probed on
    2026-09-01 and none serves an agent card; docs.0xarchive.io is the only host that does.
    docs.0xarchive.io is a host 0xArchive controls and the card's provider.organization is
    "0xArchive", so ownership is not in question.
x-evidence:
  fetched: '2026-09-01'
  url: https://docs.0xarchive.io/.well-known/agent-card.json
  http_status: 200
  content_type: application/json
  body_parses_as: JSON object with AgentCard shape
agent_card:
  name: 0xArchive
  url: https://docs.0xarchive.io/
  version: 1.0.0
  protocol_version: '0.3'
  preferred_transport: HTTP+JSON
  provider:
    organization: 0xArchive
    url: https://docs.0xarchive.io/
  documentation_url: https://docs.0xarchive.io/
  capabilities:
    streaming: false
    push_notifications: false
  default_input_modes:
  - text/plain
  default_output_modes:
  - text/plain
  skill_count: 3
  skills:
  - id: 0xarchive-market-data
    url: https://docs.0xarchive.io/.well-known/agent-skills/0xarchive-market-data/skill.md
  - id: 0xarchive-openapi
    url: https://docs.0xarchive.io/.well-known/agent-skills/0xarchive-openapi/skill.md
  - id: 0xarchive-websocket
    url: https://docs.0xarchive.io/.well-known/agent-skills/0xarchive-websocket/skill.md
grade: conformant
grade_basis: >-
  Graded against A2A 1.0.0 hard checks: capabilities is an OBJECT (pass), protocolVersion is
  present (pass), skills is an ARRAY (pass). The optional fields that usually separate
  near-conformant from conformant are all present as well - preferredTransport (HTTP+JSON),
  defaultInputModes and defaultOutputModes are each declared.
deviations:
- field: protocolVersion
  observed: '0.3'
  note: >-
    Declares A2A protocol 0.3 rather than 1.0.0. This is a version statement, not a shape
    failure, and it is the version the card itself asserts - it is recorded, not penalised.
- field: skills[].tags
  observed: empty array on all three skills
  note: >-
    Each skill carries id, name, description and url but an empty tags[] array, so the card
    supplies no routing taxonomy for skill selection.
- field: supportedInterfaces[0].url
  observed: https://docs.0xarchive.io/
  note: >-
    The single declared interface points at the documentation site rather than at a callable
    A2A endpoint. The card is a discovery surface over 0xArchive's documented skills; the
    provider's actual callable agent surface is the hosted MCP server at
    https://mcp.0xarchive.io/mcp, which the card does not reference.