openapi: 3.0.3
info:
  title: Devin API (Cognition Labs) Attachments Consumption API
  description: The Devin API lets you create and drive Devin, Cognition's autonomous AI software engineer, programmatically. This document models the legacy v1 surface (api.devin.ai/v1, still live and documented, authenticated with apk_user_*/apk_* keys) in full - sessions, messages, attachments, knowledge, playbooks, and secrets - plus representative endpoints from the current v3 organizations/enterprise surface (api.devin.ai/v3, authenticated with cog_ service-user or personal access tokens) and the v2/v3 consumption (ACU usage) endpoints. The v2/v3 enterprise surface has additional organization, member, and API-key management endpoints not exhaustively modeled here; see the humanURL/APIReference links in apis.yml for the full documented set. All endpoints are transcribed from Cognition's public documentation at https://docs.devin.ai and have not been exercised against production credentials, which require an active paid Devin plan or Enterprise contract.
  version: '1.0'
  contact:
    name: Cognition
    url: https://cognition.ai
  license:
    name: Proprietary
    url: https://docs.devin.ai/admin/security
servers:
- url: https://api.devin.ai/v1
  description: Legacy v1 API (apk_user_*/apk_* keys)
- url: https://api.devin.ai/v3
  description: Current v3 organizations/enterprise API (cog_ keys)
security:
- bearerAuth: []
tags:
- name: Consumption
  description: Agent Compute Unit (ACU) usage and billing metrics.
paths:
  /enterprise/consumption/daily:
    get:
      operationId: getEnterpriseDailyConsumption
      tags:
      - Consumption
      summary: Get daily ACU consumption for the enterprise
      servers:
      - url: https://api.devin.ai/v3
      parameters:
      - name: start_time
        in: query
        description: Unix timestamp (seconds) lower bound.
        schema:
          type: integer
      - name: end_time
        in: query
        description: Unix timestamp (seconds) upper bound.
        schema:
          type: integer
      responses:
        '200':
          description: Daily ACU consumption totals.
          content:
            application/json:
              schema:
                type: object
                properties:
                  days:
                    type: array
                    items:
                      type: object
                      properties:
                        date:
                          type: string
                          format: date
                        acu_consumed:
                          type: number
        '401':
          $ref: '#/components/responses/Unauthorized'
  /organizations/{org_id}/consumption/sessions:
    parameters:
    - $ref: '#/components/parameters/OrgId'
    get:
      operationId: getSessionDailyConsumption
      tags:
      - Consumption
      summary: Get per-session daily ACU consumption
      servers:
      - url: https://api.devin.ai/v3
      parameters:
      - name: start_time
        in: query
        schema:
          type: integer
      - name: end_time
        in: query
        schema:
          type: integer
      responses:
        '200':
          description: Per-session daily ACU consumption.
          content:
            application/json:
              schema:
                type: object
                properties:
                  sessions:
                    type: array
                    items:
                      type: object
                      properties:
                        session_id:
                          type: string
                        date:
                          type: string
                          format: date
                        acu_consumed:
                          type: number
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  parameters:
    OrgId:
      name: org_id
      in: path
      required: true
      description: The organization ID, found in Settings > Service Users.
      schema:
        type: string
  schemas:
    ValidationErrorBody:
      type: object
      properties:
        detail:
          type: array
          items:
            type: object
            properties:
              loc:
                type: array
                items:
                  type: string
              msg:
                type: string
              type:
                type: string
  responses:
    Unauthorized:
      description: Missing or invalid bearer token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ValidationErrorBody'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: 'v1/v2 keys are prefixed apk_user_* (personal) or apk_* (service). The current v3 API uses service-user or personal access tokens prefixed cog_. Passed as `Authorization: Bearer YOUR_API_KEY`.'