generated: '2026-08-26'
method: probed
source: https://docs.tabby.ai/.well-known/agent-card.json
provider: Tabby
providerId: tabby
summary: Tabby publishes an A2A Agent Card at the canonical /.well-known/agent-card.json path on its documentation host. The card advertises a single skill ("Tabby") pointing at a provider-published Agent Skill markdown file, and declares HTTP+JSON as the preferred transport. It is a documentation agent surface — it does not expose the money-moving Checkout/Payments/Disputes API directly.
discovery:
  path: /.well-known/agent-card.json
  canonical: true
  host: docs.tabby.ai
x-evidence:
  fetched: '2026-08-26'
  url: https://docs.tabby.ai/.well-known/agent-card.json
  http_status: 200
  content_type: application/json
  body_bytes: 934
card:
  name: Tabby
  url: https://docs.tabby.ai/
  version: 1.0.0
  protocolVersion: '0.3'
  preferredTransport: HTTP+JSON
  provider:
    organization: Tabby
    url: https://docs.tabby.ai/
  documentationUrl: https://docs.tabby.ai/
  capabilities:
    streaming: false
    pushNotifications: false
  defaultInputModes:
  - text/plain
  defaultOutputModes:
  - text/plain
  skills:
  - id: tabby
    name: Tabby
    url: https://docs.tabby.ai/.well-known/agent-skills/tabby/skill.md
  file: a2a/tabby-agent-card.json
grade_basis:
  spec: A2A 1.0.0
  hard_checks:
    capabilities_is_object: true
    protocol_version_present: true
    skills_is_array: true
  optional_checks:
    preferred_transport_present: true
    default_input_modes_present: true
    default_output_modes_present: true
deviations:
- id: skills-tags-empty
  severity: informational
  detail: The single declared skill carries an empty tags[] array, so the card offers no keyword handles for skill selection.
- id: card-scope-is-documentation
  severity: informational
  detail: url, provider.url and documentationUrl all resolve to https://docs.tabby.ai/ — the card describes the documentation agent surface (the same surface as the hosted MCP server at https://docs.tabby.ai/mcp), not the api.tabby.ai / api.tabby.sa transaction API.
- id: no-security-schemes
  severity: informational
  detail: No securitySchemes/security block is declared. Consistent with an anonymous documentation surface; an agent cannot learn the Bearer secret_key model from the card alone.
related:
  mcp: mcp/tabby-mcp.yml
  agent_skill: skills/tabby-tabby.md
conformance:
  grade: conformant