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

# Post v1projects languages

> Add a new target language to the project.



## OpenAPI

````yaml https://hidden-wildcat-614.convex.site/v1/openapi post /v1/projects/{projectId}/languages
openapi: 3.0.0
info:
  version: 2.0.0
  title: LazyLocales API
  description: >-
    AI-powered translation management REST API with CLI-first workflow.


    ## Authentication

    All endpoints require `Authorization: Bearer <token>`. Two token types:

    - **Access token** — from `lazylocales login` or user session

    - **Project API token** — prefixed `ll_`, created in project settings for
    CI/CD


    ## Workflow

    Translations are managed via the CLI using local AI translation with models
    like GPT-4o, Claude, Gemini, or Mistral. The dashboard provides read-only
    monitoring and project configuration.


    ## Error Format

    All errors follow: `{ "error": { "code": "ERROR_CODE", "message": "..." } }`
servers:
  - url: https://{deployment}.convex.site
    description: Convex deployment
    variables:
      deployment:
        default: your-deployment
        description: Your Convex deployment name
security: []
tags:
  - name: Projects
    description: Project management endpoints
  - name: Source Files
    description: Source locale file operations
  - name: Locales
    description: Locale status and management
  - name: CLI
    description: CLI config and reporting endpoints
  - name: API Tokens
    description: API token management
paths:
  /v1/projects/{projectId}/languages:
    post:
      tags:
        - Locales
      description: Add a new target language to the project.
      parameters:
        - schema:
            type: string
            minLength: 1
            example: proj_abc123
          required: true
          name: projectId
          in: path
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                locale:
                  type: string
                  example: fr-FR
              required:
                - locale
      responses:
        '200':
          description: Language added successfully
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                  locale:
                    type: string
                required:
                  - success
                  - locale

````