generated: '2026-07-17'
method: searched
source: https://developer.act-on.com/ (llms.txt index) + live probes of restapi.actonsoftware.com
api: Act-On REST API
auth:
  style: oauth2
  transmit: Authorization header, Bearer scheme
  token_endpoint: https://restapi.actonsoftware.com/token
  ref: authentication/act-on-authentication.yml
base_url: https://restapi.actonsoftware.com
versioning:
  style: uri-path
  current: /api/1
  evidence: Documented resource paths and live endpoints sit under /api/1 (e.g. /api/1/ping -> 401).
  ref: lifecycle/act-on-lifecycle.yml
error_envelope:
  style: custom-json
  fields: [httpCode, httpMessage, moreInformation]
  ref: errors/act-on-problem-types.yml
content_types:
  requests: application/x-www-form-urlencoded and multipart/form-data (form-encoded posts are common per docs)
  responses: application/json
idempotency:
  supported: false
  note: No idempotency-key header documented in the captured surface.
pagination:
  style: unknown
  note: Not documented in the captured llms.txt index.
rate_limiting:
  signaling: unknown
  note: Not documented in the captured surface.
notes:
- Many write endpoints require URL-form-encoded or multipart/form-data bodies per the docs descriptions.