openapi: 3.0.1
info:
  title: Klu Actions Sessions API
  description: 'REST API for the Klu (klu.ai) LLM app platform. The Klu Engine runs Actions - each encapsulating a prompt template, model config, context (RAG), and output parsing - against input variables to generate completions, and manages the data, feedback, sessions, models, apps, and workspaces around them. Authentication is via a Bearer API key obtained from the workspace API Keys settings.

    NOTE - Endpoints under the Actions, Context, and Apps/Workspaces paths reflect the publicly documented Klu API reference and SDK surface. Where the public docs document a capability via the SDK but do not publish the exact REST path, this spec models the conventional resource path used by the Klu Engine; see review.yml for which operations are documented verbatim versus inferred from the SDK.'
  termsOfService: https://klu.ai/terms
  contact:
    name: Klu Support
    url: https://help.klu.ai/
  version: '1.0'
servers:
- url: https://api.klu.ai/v1
  description: Klu Engine production API
security:
- bearerAuth: []
tags:
- name: Sessions
  description: Session memory for multi-turn conversations.
paths:
  /sessions:
    post:
      operationId: createSession
      tags:
      - Sessions
      summary: Create a session
      description: Creates a session used to store and retrieve memory across Action generations.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateSessionRequest'
      responses:
        '200':
          description: Session created.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Session'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /sessions/{guid}:
    get:
      operationId: getSession
      tags:
      - Sessions
      summary: Get a session
      parameters:
      - $ref: '#/components/parameters/Guid'
      responses:
        '200':
          description: Session.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Session'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  responses:
    Unauthorized:
      description: Missing or invalid API key.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    Guid:
      name: guid
      in: path
      required: true
      description: GUID of the resource.
      schema:
        type: string
  schemas:
    CreateSessionRequest:
      type: object
      properties:
        action:
          type: string
          description: GUID of the Action this session is associated with.
        name:
          type: string
    Session:
      type: object
      properties:
        guid:
          type: string
        action:
          type: string
        name:
          type: string
    Error:
      type: object
      properties:
        error:
          type: string
        message:
          type: string
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: Klu API key passed as a Bearer token in the Authorization header.