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: Helius
providerId: helius
created: '2026-05-08'
# Provenance stamped 2026-08-11: this artifact was written by the API Evangelist
# bulk sweep dated 2026-05-08, not harvested from the provider. See roadmap#35.
method: generated
modified: '2026-05-08'
reconciled: true
tags:
- Web3
- Blockchain
- Solana
- RPC
- DAS
- Streams
- Rate Limiting
description: Helius enforces per-API-key RPC requests-per-second and a monthly credit
  cap.
notes: DAS, sendTransaction, getProgramAccounts, Webhooks, WebSockets each consume
  credits.
sources:
- https://www.helius.dev/pricing
- https://www.helius.dev/docs/rate-limits
responseCodes:
  throttled: 429
limits:
- name: Free RPC RPS
  scope: api_key
  metric: requests_per_second
  limit: 10
  notes: Free plan.
- name: Developer RPC RPS
  scope: api_key
  metric: requests_per_second
  limit: 50
  notes: Developer plan.
- name: Business RPC RPS
  scope: api_key
  metric: requests_per_second
  limit: 200
  notes: Business plan.
- name: Professional RPC RPS
  scope: api_key
  metric: requests_per_second
  limit: 500
  notes: Professional plan.
- name: Monthly Credits
  scope: account
  metric: credits
  limit: see plan
  notes: Monthly credit ceiling per plan.
policies:
- name: Backoff Strategy
  description: Exponential backoff on 429.
- name: Use Webhooks/LaserStream
  description: Avoid RPC polling; subscribe via Webhooks or LaserStream gRPC.
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com