generated: '2026-09-05'
method: searched
source: https://support.75f.io/hc/en-us/articles/5459701361427-Oauth-API
docs: https://support.75f.io/hc/en-us/articles/5459584919059-External-Users-API-Developer-Portal
note: >-
  Derived from 75F's own published API documentation rather than from an OpenAPI file: 75F publishes no
  public machine-readable spec. Two credentials are required on every call — a product-scoped Azure API
  Management subscription key AND an OAuth 2.0 bearer token minted from Facilisight account credentials.
summary:
  types: [oauth2, http, apiKey]
  api_key_in: [header]
  oauth2_flows: [clientCredentials]
  two_factor_credentials: true
schemes:
- name: ApimSubscriptionKey
  type: apiKey
  in: header
  parameter_name: Ocp-Apim-Subscription-Key
  required: true
  description: >-
    Product-scoped Azure API Management subscription key. Issued per product subscription in the 75F
    developer portal, or read from Facilisight under Building Options > API Management. Missing or
    invalid keys are rejected at the gateway with HTTP 401 and never reach the backend.
  rotation:
    supported: true
    mechanism: two interchangeable keys per API category, rotated without downtime
    source: https://support.75f.io/hc/en-us/articles/54874674979603-API-Management-Via-Facilisight-Application
  key_categories:
  - {name: Read API, purpose: retrieve information from the 75F platform}
  - {name: Write API, purpose: modify or write information to the platform}
  - {name: Special Schedule API, purpose: schedule-related operations}
  sources: [https://support.75f.io/hc/en-us/articles/5460365803027-75F-API-s-Error-Returns]
- name: OAuth2ClientCredentials
  type: oauth2
  required: true
  description: >-
    POST to the token endpoint with grant_type=client_credentials; client_id is the 75F Facilisight
    username and client_secret is the Facilisight password. The account must be a standard
    username/password Facilisight account — accounts federated to O365 or Google cannot be used from
    the API. Returns a JWT access token, token_type bearer.
  flows:
  - flow: clientCredentials
    tokenUrl: https://api.75f.io/oauth/token
    scopes:
      schedules:read: Read special schedules (v2 Scheduling API)
      schedules:write: Create, update and delete special schedules (v2 Scheduling API)
  token:
    format: JWT
    expires_in_seconds: 3600
    header: 'Authorization: Bearer <token>'
    note: >-
      The docs state the token response carries expires_in 3600 while the client application
      credentials themselves expire within 24 hours and require reactivation.
  sources: [https://support.75f.io/hc/en-us/articles/5459701361427-Oauth-API]
authorization_model:
  description: >-
    Data access is scoped by Facilisight site membership, not by API scopes. An API consumer must hold a
    Facilisight "Secondary Manager" account on every site they intend to read or write; the site
    administrator grants it. Requesting points the user is not entitled to returns HTTP 200 with an
    empty Haystack grid rather than a 403.
  role_required: Secondary Manager
  granted_by: the customer's Facilisight account administrator
  source: https://support.75f.io/hc/en-us/articles/5509604551443-Accessing-the-API
onboarding:
  steps:
  - Register on the 75F developer portal (Azure API Management)
  - Request a subscription to a published product; a 75F portal admin approves it
  - Copy the subscription key from the portal profile page (or Facilisight > API Management > API Keys)
  - Obtain a Facilisight Secondary Manager account for every site in scope
  - POST client_credentials to /oauth/token to mint a bearer token
  portal: https://api-management-75f-dev.developer.azure-api.net/