generated: '2026-08-13'
method: probed
source: https://documentation.onesignal.com/.well-known/agent-card.json
provider: OneSignal
providerId: onesignal
name: OneSignal A2A Agent Card
description: 'OneSignal serves an A2A agent card from its documentation host. The card is a documentation-surface card: its url, provider.url and documentationUrl all point at documentation.onesignal.com, and its single skill resolves to a markdown Agent Skill rather than to the REST API or the MCP endpoint.'
card_file: onesignal-agent-card.json
discovery:
  path: /.well-known/agent-card.json
  canonical: true
  host: documentation.onesignal.com
x-evidence:
  fetched: '2026-08-13'
  url: https://documentation.onesignal.com/.well-known/agent-card.json
  http_status: 200
  content_type: application/json
card:
  name: OneSignal
  version: 1.0.0
  protocolVersion: '0.3'
  url: https://documentation.onesignal.com/
  preferredTransport: HTTP+JSON
  provider_organization: OneSignal
  capabilities:
    streaming: false
    pushNotifications: false
  defaultInputModes:
  - text/plain
  defaultOutputModes:
  - text/plain
  skill_count: 1
  skills:
  - id: onesignal
    name: Onesignal
    url: https://documentation.onesignal.com/.well-known/agent-skills/onesignal/skill.md
    saved_as: ../skills/onesignal-platform.md
  file: a2a/onesignal-agent-card.json
grade_basis: 'Graded against A2A 1.0.0. Hard checks all pass: capabilities is an OBJECT, protocolVersion is present, skills is an ARRAY. The optional fields that most published cards omit — preferredTransport, defaultInputModes, defaultOutputModes — are all present.'
deviations:
- id: protocol-version-0-3
  severity: informational
  detail: protocolVersion is "0.3", the pre-1.0 A2A revision. The card is structurally valid against 1.0.0 but declares an older protocol.
- id: skills-tags-empty
  severity: informational
  detail: skills[0].tags is an empty array, so the card carries no tag vocabulary for skill matching.
- id: documentation-scoped-card
  severity: informational
  detail: Every URL in the card resolves to documentation.onesignal.com. The card advertises a documentation/knowledge surface, not the api.onesignal.com REST API or the api.onesignal.com/mcp/oauth product MCP server. An agent reading only this card would not find OneSignal's callable messaging API.
other_hosts_probed:
- url: https://onesignal.com/.well-known/agent-card.json
  status: 404
- url: https://onesignal.com/.well-known/agent.json
  status: 404
- url: https://api.onesignal.com/.well-known/agent-card.json
  status: 400
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
conformance:
  grade: conformant