generated: '2026-07-11'
method: derived
source: openapi/coingecko-crypto-market-data-api-openapi.yml, openapi/coingecko-onchain-dex-api-openapi.yml,
  openapi/coingecko-pro-api-openapi.yml
summary:
  types:
  - apiKey
  api_key_in:
  - header
  - query
schemes:
- name: demoApiKeyHeader
  type: apiKey
  in: header
  parameter: x-cg-demo-api-key
  description: CoinGecko Demo API key passed via request header. Obtain a free key from the
    CoinGecko developer dashboard.
  sources:
  - openapi/coingecko-crypto-market-data-api-openapi.yml
  - openapi/coingecko-onchain-dex-api-openapi.yml
- name: demoApiKeyQuery
  type: apiKey
  in: query
  parameter: x_cg_demo_api_key
  description: CoinGecko Demo API key passed via query string parameter.
  sources:
  - openapi/coingecko-crypto-market-data-api-openapi.yml
  - openapi/coingecko-onchain-dex-api-openapi.yml
- name: proApiKeyHeader
  type: apiKey
  in: header
  parameter: x-cg-pro-api-key
  description: CoinGecko Pro API key passed via request header.
  sources:
  - openapi/coingecko-onchain-dex-api-openapi.yml
  - openapi/coingecko-pro-api-openapi.yml
- name: proApiKeyQuery
  type: apiKey
  in: query
  parameter: x_cg_pro_api_key
  description: CoinGecko Pro API key passed via query string parameter.
  sources:
  - openapi/coingecko-onchain-dex-api-openapi.yml
  - openapi/coingecko-pro-api-openapi.yml