generated: '2026-09-03'
method: searched
source: https://amazonscraperapi.com/docs/guides/rate-limits
limit_count: 4
limits:
- scope: per-key
  plan: Free
  concurrency: 50
  sustained_rps: 2
  burst: 10 RPS for 3s
- scope: per-key
  plan: Vibe ($19/mo)
  concurrency: 100
  sustained_rps: 10
  burst: 40 RPS for 3s
- scope: per-key
  plan: Pro ($49/mo)
  concurrency: 200
  sustained_rps: 25
  burst: 60 RPS for 3s
- scope: per-key
  plan: Custom ($100-$2,000/mo)
  concurrency: 300-1000+
  sustained_rps: 50-500
  burst: 2x sustained for 3s
exhaustion:
  status: 429
  error_code: rate_limited
  headers:
  - Retry-After
response_headers:
- header: Asa-Concurrency
  example: 3/20
  description: Requests in-flight vs allowed, on every successful response.
- header: Asa-Rps
  example: 8/10
  description: Current average RPS vs ceiling, on every successful response.
- header: Retry-After
  description: Seconds to wait, sent with 429 (and 503 capacity).
notes:
- Batch submissions consume one concurrency slot only for the POST; batch items run under a separate internal worker budget.
- Header prefix changed from Spb-* to Asa-* on 2026-04-16 (old prefix served for 90 days after).
- Short-term ceiling boosts available by emailing info@amazonscraperapi.com.