> ## Documentation Index
> Fetch the complete documentation index at: https://docs.px0.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Create a Tool

> Creates a new tool inside a project.



## OpenAPI

````yaml /openapi.yaml post /v1/projects/{projectID}/tools
openapi: 3.1.0
info:
  title: px0 API
  description: >
    px[0] is an open-source prompt infrastructure toolkit for managing prompts
    in production. It replaces hardcoded prompt strings with versioned
    templates, in-process caching, and OpenTelemetry observability, so teams can
    iterate on prompts without touching application code. This is the OpenAPI
    specification for all the public APIs of px0.
  version: 1.0.0
servers:
  - url: http://localhost:3000
    description: Local development server
security: []
paths:
  /v1/projects/{projectID}/tools:
    post:
      tags:
        - Tools
      summary: Create a Tool
      description: Creates a new tool inside a project.
      operationId: createTool
      parameters:
        - name: projectID
          in: path
          required: true
          description: The ID of the project.
          schema:
            type: string
            format: uuid
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/CreateToolRequest'
      responses:
        '201':
          description: Tool created successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  tool:
                    $ref: '#/components/schemas/Tool'
        '400':
          description: Invalid request
        '401':
          description: Unauthorized
        '403':
          description: Forbidden
        '404':
          description: Project not found
        '409':
          description: Duplicate tool name or slug
      security:
        - BearerAuth: []
components:
  schemas:
    CreateToolRequest:
      type: object
      properties:
        name:
          type: string
        slug:
          type: string
        description:
          type: string
      required:
        - name
    Tool:
      type: object
      properties:
        id:
          type: string
          format: uuid
        project_id:
          type: string
          format: uuid
        slug:
          type: string
        name:
          type: string
        description:
          type: string
        created_at:
          type: string
          format: date-time
        updated_at:
          type: string
          format: date-time
      required:
        - id
        - project_id
        - slug
        - name
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: >-
        Use an access token retrieved from login (Bearer sess_...) or a
        programmatic API key (Bearer ak_...).

````