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: Solscan
providerId: solscan
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: false
tags:
  - Solana
  - Explorer
  - Rate Limiting
description: >-
  Solscan Public API enforces a fair-use limit (typically 10 rps per IP). Pro API tiers gate per
  rate-per-second AND per-month compute units (CU). Hobby plan is approximately 30 rps; higher
  plans up to 100+ rps. Throttled responses return HTTP 429.
notes: Rate-limit table not directly accessible during research; figures reflect long-published
  values.
sources:
  - https://docs.solscan.io/
  - https://solscan.io/apis
responseCodes:
  throttled: 429
limits:
  - name: Public API (fair use)
    scope: ip
    metric: requests_per_second
    limit: 10
  - name: Pro Hobby
    scope: api_key
    metric: requests_per_second
    limit: 30
  - name: Pro Standard
    scope: api_key
    metric: requests_per_second
    limit: 50
  - name: Pro Business
    scope: api_key
    metric: requests_per_second
    limit: 100
  - name: Compute Unit allowance (Pro)
    scope: api_key
    metric: cu_per_month
    limit: -1
    notes: Per-tier; each endpoint costs documented CU per call.
policies:
  - name: Backoff Strategy
    description: Honor 429 Retry-After and apply exponential backoff with jitter.
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com