openapi: 3.1.0
info:
  title: S/ASH B2B Session API
  version: 1.0.0
  description: |
    API for partner backends to create and manage S/ASH coding sessions.
    Authenticate with a partner API key in Bearer format.
servers:
  - url: https://slash.ai.kr
security:
  - BearerApiKey: []
tags:
  - name: Sessions
    description: B2B coding session lifecycle
paths:
  /api/b2b/sessions:
    post:
      tags: [Sessions]
      summary: Create session
      operationId: createSession
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateSessionRequest'
            examples:
              default:
                value:
                  externalUserId: user-123
                  envVars:
                    FIRMWARE_TARGET: stm32f4
                  template: slash-opencode
                  timeoutMs: 3600000
                  autoStartOpenCode: true
                  metadata:
                    project: pcb-firmware
      responses:
        '201':
          description: Session created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SessionResponse'
        '400':
          $ref: '#/components/responses/ValidationError'
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '409':
          $ref: '#/components/responses/ConflictError'
  /api/b2b/sessions/{id}:
    parameters:
      - $ref: '#/components/parameters/SessionId'
    get:
      tags: [Sessions]
      summary: Get session status
      operationId: getSession
      responses:
        '200':
          description: Session status
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SessionResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '404':
          $ref: '#/components/responses/NotFoundError'
    delete:
      tags: [Sessions]
      summary: Destroy session
      operationId: destroySession
      responses:
        '200':
          description: Session destroyed
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: destroyed
                required: [status]
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '404':
          $ref: '#/components/responses/NotFoundError'
  /api/b2b/sessions/{id}/pause:
    parameters:
      - $ref: '#/components/parameters/SessionId'
    post:
      tags: [Sessions]
      summary: Pause session
      operationId: pauseSession
      responses:
        '200':
          description: Session paused
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: paused
                required: [status]
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '404':
          $ref: '#/components/responses/NotFoundError'
        '409':
          $ref: '#/components/responses/ConflictError'
  /api/b2b/sessions/{id}/resume:
    parameters:
      - $ref: '#/components/parameters/SessionId'
    post:
      tags: [Sessions]
      summary: Resume session
      operationId: resumeSession
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                autoStartOpenCode:
                  type: boolean
                  default: true
                  example: true
      responses:
        '200':
          description: Session resumed
          content:
            application/json:
              schema:
                type: object
                properties:
                  status:
                    type: string
                    example: running
                  sandboxId:
                    type: string
                    example: sbx_abc123
                  sandboxUrl:
                    type: string
                    example: https://51234-sbx_abc123.e2b.app
                required: [status, sandboxId, sandboxUrl]
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '404':
          $ref: '#/components/responses/NotFoundError'
        '409':
          $ref: '#/components/responses/ConflictError'
  /api/b2b/sessions/{id}/launch-url:
    parameters:
      - $ref: '#/components/parameters/SessionId'
    post:
      tags: [Sessions]
      summary: Issue signed launch URL
      operationId: createLaunchUrl
      responses:
        '200':
          description: Signed launch URL
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LaunchUrlResponse'
        '401':
          $ref: '#/components/responses/UnauthorizedError'
        '404':
          $ref: '#/components/responses/NotFoundError'
components:
  securitySchemes:
    BearerApiKey:
      type: http
      scheme: bearer
      bearerFormat: API Key (slash_<64 hex>)
      description: Partner API key in Bearer format.
  parameters:
    SessionId:
      name: id
      in: path
      required: true
      schema:
        type: string
      example: '42'
  schemas:
    CreateSessionRequest:
      type: object
      properties:
        externalUserId:
          type: string
          minLength: 1
          example: user-123
        envVars:
          type: object
          additionalProperties:
            type: string
          example:
            FIRMWARE_TARGET: stm32f4
        template:
          type: string
          default: slash-opencode
          example: slash-opencode
        timeoutMs:
          type: integer
          minimum: 60000
          maximum: 86400000
          default: 3600000
          example: 3600000
        autoStartOpenCode:
          type: boolean
          default: true
          example: true
        metadata:
          type: object
          additionalProperties:
            type: string
          example:
            project: pcb-firmware
      required: [externalUserId]
    SessionResponse:
      type: object
      properties:
        sessionId:
          type: string
          example: '42'
        sandboxId:
          type: string
          example: sbx_abc123
        status:
          type: string
          example: running
        sandboxUrl:
          type: string
          example: https://51234-sbx_abc123.e2b.app
        createdAt:
          type: string
          format: date-time
          example: '2026-04-07T12:34:56.000Z'
      required: [sessionId, sandboxId, status, sandboxUrl, createdAt]
    LaunchUrlResponse:
      type: object
      properties:
        url:
          type: string
          example: https://slash.ai.kr/workspace/?s=YmFzZTY0c2FuZGJveA%3D%3D&partner=7&ts=1744032000000&sig=abcdef
        expiresAt:
          type: number
          example: 1744032000000
      required: [url, expiresAt]
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
          example: Validation failed
        details:
          type: array
          items:
            type: object
            properties:
              field:
                type: string
                example: externalUserId
              message:
                type: string
                example: Required
            required: [field, message]
      required: [error]
  responses:
    ValidationError:
      description: Request validation failed
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error: Validation failed
            details:
              - field: externalUserId
                message: Required
    UnauthorizedError:
      description: Missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error: Unauthorized
    NotFoundError:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error: Session not found
    ConflictError:
      description: Resource state conflict
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            error: Session is already paused