openapi: 3.1.0
info:
  title: Personio Public API v2 Absence Periods Auth API
  description: 'Next-generation Personio Public API for HR management data including

    persons, absence periods, projects, and webhooks. Authenticates via OAuth

    2.0 Client Credentials Grant: exchange a Client ID and Secret at

    POST /v2/auth/token for a short-lived Bearer access token, then include

    it in the Authorization header of subsequent calls.


    Only a representative subset of the public v2 surface (persons, absence

    periods, projects, webhooks) is modeled here. See the API reference

    linked under externalDocs for the full catalog.

    '
  version: 1.0.0
  contact:
    name: Personio Developer Hub
    url: https://developer.personio.de/
  license:
    name: Personio Proprietary
servers:
- url: https://api.personio.de/v2
  description: Personio Public API v2 production base URL
security:
- bearerAuth: []
tags:
- name: Auth
  description: OAuth 2.0 token exchange.
paths:
  /auth/token:
    post:
      tags:
      - Auth
      summary: Obtain an OAuth 2.0 access token
      description: 'Exchange Personio API credentials (Client ID and Client Secret) for a

        short-lived Bearer access token using the OAuth 2.0 Client Credentials

        grant.

        '
      operationId: createAccessToken
      security: []
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - grant_type
              - client_id
              - client_secret
              properties:
                grant_type:
                  type: string
                  enum:
                  - client_credentials
                client_id:
                  type: string
                  description: Personio API client identifier.
                client_secret:
                  type: string
                  description: Personio API client secret.
                scope:
                  type: string
                  description: Space-separated list of requested scopes.
      responses:
        '200':
          description: Access token issued.
          content:
            application/json:
              schema:
                type: object
                properties:
                  access_token:
                    type: string
                  token_type:
                    type: string
                    example: Bearer
                  expires_in:
                    type: integer
                  scope:
                    type: string
        '401':
          description: Invalid credentials.
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Bearer access token obtained from POST /v2/auth/token using the

        OAuth 2.0 Client Credentials grant.

        '
externalDocs:
  description: Personio Developer Hub
  url: https://developer.personio.de/