openapi: 3.0.1
info:
  title: Linkup Credits API
  description: Production-grade web search and answer API for AI agents and LLMs. The /search endpoint grounds model responses in real-time web context, returning ranked results, sourced answers with inline citations, or schema-driven structured output. /fetch converts a URL into clean LLM-ready markdown, /research starts an asynchronous deep-research task, and /credits/balance reports remaining account credits. All endpoints authenticate with a Bearer API key.
  termsOfService: https://www.linkup.so/terms-of-service
  contact:
    name: Linkup
    url: https://www.linkup.so
  version: '1.0'
servers:
- url: https://api.linkup.so/v1
security:
- bearerAuth: []
tags:
- name: Credits
paths:
  /credits/balance:
    get:
      operationId: getCreditsBalance
      tags:
      - Credits
      summary: Retrieve the remaining credits balance for the account.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/BalanceResponse'
        '401':
          description: Unauthorized
components:
  schemas:
    BalanceResponse:
      type: object
      properties:
        balance:
          type: number
          description: The number of credits remaining in your account.
          example: 123.456
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: 'Pass your Linkup API key as `Authorization: Bearer <API_KEY>`.'