name: Chempirical rate limits
generated: '2026-10-09'
method: searched
source: https://chempirical.com/api/
limit_count: 1
limits:
- name: Courtesy request rate
  limit_text: Please keep it to a few requests per second.
  scope: per-client
  note: A stated courtesy request, not a numeric enforced limit; no rate-limit response headers are documented.