openapi: 3.1.0
info:
  title: CoinGecko Crypto Market Data Asset Platforms Ping API
  description: The CoinGecko Crypto Market Data API provides comprehensive and reliable cryptocurrency price and market data through RESTful JSON endpoints. It offers over 70 endpoints covering real-time and historical prices, trading volumes, market capitalization, OHLCV data, exchange information, NFT metrics, derivatives data, and public treasury holdings for over 18,000 coins. The Demo API plan provides free access with 30 calls per minute to a subset of 30 publicly accessible endpoints.
  version: 3.0.1
  contact:
    name: CoinGecko Support
    url: https://support.coingecko.com
  termsOfService: https://www.coingecko.com/en/terms
servers:
- url: https://api.coingecko.com/api/v3
  description: CoinGecko Demo API Server
security:
- demoApiKeyHeader: []
- demoApiKeyQuery: []
tags:
- name: Ping
  description: Check API server status
paths:
  /ping:
    get:
      operationId: ping
      summary: Check API server status
      description: Check the API server status. Returns a gecko_says message to confirm the server is operational.
      tags:
      - Ping
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  gecko_says:
                    type: string
                    description: Status message from the API server
components:
  securitySchemes:
    demoApiKeyHeader:
      type: apiKey
      in: header
      name: x-cg-demo-api-key
      description: CoinGecko Demo API key passed via request header. Obtain a free key from the CoinGecko developer dashboard.
    demoApiKeyQuery:
      type: apiKey
      in: query
      name: x_cg_demo_api_key
      description: CoinGecko Demo API key passed via query string parameter.
externalDocs:
  description: CoinGecko API Documentation
  url: https://docs.coingecko.com