specification: API Commons Rate Limits
specificationVersion: '0.1'
schema: https://raw.githubusercontent.com/api-evangelist/interface-research/main/schema/api-commons.yml#/$defs/RateLimits
provider: Coin Metrics
providerId: coin-metrics
generated: '2026-07-22'
method: searched
created: '2026-07-22'
modified: '2026-07-22'
tags:
  - Rate Limiting
  - Crypto
  - Market Data
description: >-
  Published Coin Metrics API v4 rate limits. Four rate-limit plans (Community,
  Trial, Default/PRO, Download/PRO) with sliding-window request limits, a cap
  of 10 parallel REST requests, and 200 parallel WebSocket connections for
  paid keys. 429 on violation with X-RateLimit-* headers per
  draft-polli-ratelimit-headers-03 plus an X-RateLimit-Plan header
  (default | trial | download | community).
sources:
  - https://docs.coinmetrics.io/cm-api-spec/rate-limits
  - https://docs.coinmetrics.io/access-our-data/api
headers:
  limit: X-RateLimit-Limit
  remaining: X-RateLimit-Remaining
  reset: X-RateLimit-Reset
  plan: X-RateLimit-Plan
responseCodes:
  throttled: 429
limits:
  - name: Community REST requests
    scope: ip_address
    metric: requests_per_window
    limit: 10
    timeFrame: 6 seconds sliding window
    notes: About 1.6 requests/second; reduced download speed; 10 parallel requests max.
  - name: Trial REST requests
    scope: api_key
    metric: requests_per_window
    limit: 10
    timeFrame: 6 seconds sliding window
    notes: Max download speed; 10 parallel requests; 200 parallel WebSocket connections.
  - name: Default (PRO) REST requests
    scope: api_key
    metric: requests_per_window
    limit: 6000
    timeFrame: 20 seconds sliding window
    notes: About 300 requests/second; standard download speed; 10 parallel requests; 200 parallel WebSocket connections.
  - name: Download (PRO) REST requests
    scope: api_key
    metric: requests_per_window
    limit: 6000
    timeFrame: 20 seconds sliding window
    notes: Same request limit as Default but max download speed for bulk historical pulls; switch plans via Coin Metrics.
  - name: Parallel REST requests
    scope: api_key
    metric: concurrent_requests
    limit: 10
    timeFrame: concurrent
    notes: Applies to both paid and community tiers; excess requests are queued.
  - name: Parallel WebSocket connections
    scope: api_key
    metric: concurrent_connections
    limit: 200
    timeFrame: concurrent
    notes: Paid (Trial/PRO) keys only; Community has no WebSocket access.
limit_count: 6