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

# List known countries

> Distinct countries present in the customer base, sorted alphabetically.



## OpenAPI

````yaml /reference/openapi.json get /v1/countries
openapi: 3.1.0
info:
  title: Campaign Assistant API
  version: v1
  summary: Campaign drafting over a shared, runtime-validated contract.
  description: >-
    Every endpoint below is described by the shared contract package: the
    request and response schemas served here are the ones the web app validates
    against at runtime.


    Authentication is a bearer access token obtained from `auth.signIn`. Errors
    are always an RFC 9457 problem document. Chat replies can be streamed as
    server-sent events; see `chat.messages.stream`.
  license:
    name: UNLICENSED
    identifier: UNLICENSED
servers:
  - url: http://localhost:4000/api/v1
    description: This deployment
security:
  - bearerAuth: []
tags:
  - name: Authentication
    description: Sign-in, token rotation and sign-out.
  - name: Customers
    description: 'The customer base: records, aggregates and bulk import.'
  - name: Segments
    description: Saved audience definitions and live audience counts.
  - name: Campaigns
    description: Model-assisted campaign drafting and its review workflow.
  - name: Chat
    description: Assistant threads, including server-sent streaming of replies.
paths:
  /v1/countries:
    get:
      tags:
        - Customers
      summary: List known countries
      description: Distinct countries present in the customer base, sorted alphabetically.
      operationId: countries.list
      responses:
        '200':
          description: OK
          headers:
            x-api-version:
              $ref: '#/components/headers/ApiVersion'
          content:
            application/json:
              schema:
                type: array
                items:
                  type: string
        '401':
          description: Unauthorized
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/Problem'
        '500':
          description: Internal Server Error
          content:
            application/problem+json:
              schema:
                $ref: '#/components/schemas/Problem'
      security:
        - bearerAuth: []
components:
  headers:
    ApiVersion:
      description: The API version that answered this request.
      schema:
        type: string
        const: v1
        examples:
          - v1
  schemas:
    Problem:
      type: object
      properties:
        type:
          type: string
        title:
          type: string
        status:
          type: integer
          minimum: -9007199254740991
          maximum: 9007199254740991
        detail:
          type: string
        code:
          type: string
          enum:
            - validation_failed
            - invalid_credentials
            - unauthenticated
            - session_expired
            - forbidden
            - not_found
            - conflict
            - rate_limited
            - llm_unavailable
            - llm_error
            - internal_error
        errors:
          type: object
          propertyNames:
            type: string
          additionalProperties:
            type: array
            items:
              type: string
        traceId:
          type: string
      required:
        - type
        - title
        - status
        - detail
        - code
      additionalProperties: false
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: >-
        Access token issued by `auth.signIn`. Expires; refresh it with
        `auth.refresh`.

````

This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.