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: Amberdata
providerId: amberdata
created: '2026-06-21'
modified: '2026-06-21'
reconciled: false
tags:
- Crypto
- Blockchain
- Market Data
- Digital Assets
- Rate Limiting
- Quotas
- Throttling
description: >-
  Amberdata enforces per-account rate limits on REST API requests, scoped to the
  user-specific x-api-key. Limits and historical-depth entitlements vary by
  subscription plan and contract. Specific per-plan request-rate values are not
  publicly published and are not reconciled in this artifact. WebSocket
  streaming connections are subscription-based rather than per-request metered.
notes: >-
  Verify per-plan request limits, concurrent connection limits, and historical
  data depth with Amberdata during reconciliation; values vary by plan and
  enterprise agreement.
sources:
- https://docs.amberdata.io/http/http-api-fundamentals
- https://docs.amberdata.io/reference/ws-subscriptions-plans
- https://www.amberdata.io/pricing
responseCodes:
  throttled: 429
limits:
- name: REST Requests
  scope: account
  metric: requests
  limit: see provider documentation
  notes: Per-account REST request rate, scoped to the x-api-key; varies by plan.
- name: Historical Data Depth
  scope: account
  metric: history
  limit: see provider documentation
  notes: Available historical lookback varies by subscription entitlement.
- name: WebSocket Subscriptions
  scope: account
  metric: connections
  limit: see provider documentation
  notes: Real-time streaming is subscription-based; concurrent connection and topic limits vary by plan.
policies:
- name: API Key Scoping
  description: All REST requests require the unique user-specific x-api-key header; limits are enforced per account.
- name: Backoff Strategy
  description: Clients should implement exponential backoff with jitter and honor Retry-After on HTTP 429 responses.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com