> ## Documentation Index
> Fetch the complete documentation index at: https://polos.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Register an agent definition



## OpenAPI

````yaml api-reference/endpoints/agents/api-reference/openapi.json post /api/v1/agents/register
openapi: 3.1.0
info:
  title: Polos Orchestrator API
  description: API for the Polos durable execution platform for AI agents
  contact:
    name: Polos Team
    url: https://github.com/polos-dev/polos
  license:
    name: ''
  version: 1.0.0
servers:
  - url: /
    description: Current server
security: []
tags:
  - name: Health
    description: Health check endpoints
  - name: Projects
    description: Project management endpoints
  - name: Agents
    description: Agent definition management
  - name: Tools
    description: Tool definition management
  - name: Workflows
    description: Workflow management
  - name: Executions
    description: Workflow execution management
  - name: Traces
    description: Observability traces
  - name: Events
    description: Event publishing and streaming
  - name: Event Triggers
    description: Event-based workflow triggers
  - name: Schedules
    description: Scheduled workflow execution
  - name: Workers
    description: Worker registration and management
  - name: Deployments
    description: Deployment management
paths:
  /api/v1/agents/register:
    post:
      tags:
        - Agents
      summary: Register an agent definition
      operationId: register_agent
      parameters:
        - name: X-Project-ID
          in: header
          description: Project ID
          required: true
          schema:
            type: string
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RegisterAgentRequest'
        required: true
      responses:
        '200':
          description: Agent registered successfully
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RegisterAgentResponse'
        '400':
          description: Bad request
        '404':
          description: Project not found
        '409':
          description: Agent already exists
        '500':
          description: Internal server error
      security:
        - bearer_auth: []
        - cookie_auth: []
components:
  schemas:
    RegisterAgentRequest:
      type: object
      description: Request to register an agent definition
      required:
        - id
        - provider
        - model
      properties:
        config:
          description: Additional configuration
        deployment_id:
          type:
            - string
            - 'null'
          description: Deployment ID (optional, uses latest if not provided)
        id:
          type: string
          description: Agent ID
        max_output_tokens:
          type:
            - integer
            - 'null'
          format: int32
          description: Maximum output tokens
        metadata:
          description: Agent metadata
        model:
          type: string
          description: Model name (e.g., "gpt-4", "claude-3")
        provider:
          type: string
          description: LLM provider (e.g., "openai", "anthropic")
        system_prompt:
          type:
            - string
            - 'null'
          description: System prompt for the agent
        temperature:
          type:
            - number
            - 'null'
          format: double
          description: Temperature for LLM generation
        tools:
          description: Tools available to the agent
    RegisterAgentResponse:
      type: object
      description: Response for agent registration
      required:
        - success
      properties:
        success:
          type: boolean
          description: Whether registration was successful
  securitySchemes:
    bearer_auth:
      type: http
      scheme: bearer
    cookie_auth:
      type: apiKey
      in: cookie
      name: polos_auth

````