generated: '2026-07-18'
method: searched
source: https://documenter.getpostman.com/view/4679101/T17KeScV + https://docs.appgain.io/overview/AppBoostIntegration/
docs: https://docs.appgain.io/complete-knowledge-base/
summary:
  types: [apiKey]
  api_key_in: [header]
  oauth2_flows: []
  notes: Appgain's REST API uses a per-application API key sent in an HTTP header, with
    the tenant/project scoped by a projectId in the request path. There is no OAuth2 or
    OIDC flow on the messaging API; the API key and project ID are issued from the
    dashboard under Project Settings -> API and SDK Keys.
schemes:
- name: appApiKey
  type: apiKey
  in: header
  parameter_name: appApiKey
  description: Application API key issued per project. Passed as the `appApiKey` request
    header on every REST call (verified across the public Postman collection).
  sources: [postman/T17KeScV]
path_scoping:
  parameter: projectId
  location: path
  example: https://api.appgain.io/apps/{projectId}/smartlinks
credentials_source: Project Settings -> API and SDK Keys (Appgain dashboard)