Coin Metrics · Authentication Profile

Coin Metrics Authentication

Authentication

Coin Metrics secures its APIs with apiKey across 1 declared security scheme, as derived from its OpenAPI definitions.

FinancialMarket DataCryptoBlockchainOn-Chain DataIndexesReference RatesOrder BookReal-Time
Methods: apiKey Schemes: 1 OAuth flows: API key in: query

Security Schemes

api_key apiKey
· in: query (api_key)

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-22'
method: searched
source: openapi/coin-metrics-blockchain-explorer-job-api-openapi.yml, openapi/coin-metrics-blockchain-metadata-api-openapi.yml,
  openapi/coin-metrics-catalog-api-openapi.yml, openapi/coin-metrics-catalog-v2-api-openapi.yml, openapi/coin-metrics-chain-monitor-tools-api-openapi.yml,
  openapi/coin-metrics-constituent-snapshots-api-openapi.yml, openapi/coin-metrics-constituent-timeframes-api-openapi.yml,
  openapi/coin-metrics-full-blockchain-entities-v2-api-openapi.yml, openapi/coin-metrics-full-catalog-api-openapi.yml,
  openapi/coin-metrics-full-catalog-v2-api-openapi.yml, openapi/coin-metrics-jobs-api-openapi.yml, openapi/coin-metrics-list-of-blockchain-entities-v2-api-openapi.yml
  ...
summary:
  types:
  - apiKey
  api_key_in:
  - query
schemes:
- name: api_key
  type: apiKey
  in: query
  parameter: api_key
  description: Coin Metrics API key can be specified as `?api_key=` query parameter.
  sources:
  - openapi/coin-metrics-blockchain-explorer-job-api-openapi.yml
  - openapi/coin-metrics-blockchain-metadata-api-openapi.yml
  - openapi/coin-metrics-catalog-api-openapi.yml
  - openapi/coin-metrics-catalog-v2-api-openapi.yml
  - openapi/coin-metrics-chain-monitor-tools-api-openapi.yml
  - openapi/coin-metrics-constituent-snapshots-api-openapi.yml
  - openapi/coin-metrics-constituent-timeframes-api-openapi.yml
  - openapi/coin-metrics-full-blockchain-entities-v2-api-openapi.yml
  - openapi/coin-metrics-full-catalog-api-openapi.yml
  - openapi/coin-metrics-full-catalog-v2-api-openapi.yml
  - openapi/coin-metrics-jobs-api-openapi.yml
  - openapi/coin-metrics-list-of-blockchain-entities-v2-api-openapi.yml
  - openapi/coin-metrics-profile-api-openapi.yml
  - openapi/coin-metrics-reference-data-api-openapi.yml
  - openapi/coin-metrics-security-master-api-openapi.yml
  - openapi/coin-metrics-taxonomy-api-openapi.yml
  - openapi/coin-metrics-taxonomy-metadata-api-openapi.yml
  - openapi/coin-metrics-timeseries-api-openapi.yml
  - openapi/coin-metrics-timeseries-stream-api-openapi.yml
docs: https://docs.coinmetrics.io/access-our-data/api
notes: Paid (Pro) tier authenticates with an API key passed as the api_key query parameter (keys issued via sales
  contact, no self-serve signup). The free Community API at community-api.coinmetrics.io/v4 requires no authentication
  at all (CC BY-NC 4.0, non-commercial). Rate-limit plan is signaled per key via the X-RateLimit-Plan response header.