generated: '2026-08-12'
method: probed
source: https://api.empatica.com/v2/
name: Empatica rate limits
description: >-
  Empatica publishes no rate-limit documentation for any surface, and the live
  host returns no rate-limit headers. Both halves were checked: the docs search
  found nothing, and the runtime probe found nothing. limit_count 0 is a measured
  zero, not an unchecked one.
limit_count: 0
documented: false
limits: []
response_headers:
  x_ratelimit: not-returned
  ratelimit_draft: not-returned
  retry_after: not-returned
  detail: >-
    No X-RateLimit-Limit / -Remaining / -Reset, no RFC 9239-style RateLimit /
    RateLimit-Policy, and no Retry-After header appeared on any probed response from
    api.empatica.com, including repeated failed POSTs to /v2/login. The host's
    Access-Control-Expose-Headers is "*", so a browser client would see such headers
    if they existed.
exhaustion_status_code: unknown
x-evidence:
- {url: 'https://api.empatica.com/v2/login', method: POST, http_status: 401, rate_limit_headers: none}
- {url: 'https://api.empatica.com/v2/users/me', method: GET, http_status: 401, rate_limit_headers: none}
- {url: 'https://api.empatica.com/v2/users', method: GET, http_status: 405, rate_limit_headers: none}
- {url: 'https://www.empatica.com/cloud-api/', http_status: 200, finding: 'no rate,
    quota or throughput figure published'}
data_transfer_cadence:
  note: >-
    The nearest thing Empatica publishes to a throughput contract is not a rate limit
    but a delivery cadence — high-frequency raw data is uploaded to the Empatica Cloud
    every 30 minutes and lands in S3 as Avro files covering up to ~30 minutes each.
    S3 read throughput is governed by AWS, not by Empatica.
  source: https://support.empatica.com/hc/en-us/articles/17727336158365-Raw-data-in-the-Empatica-Cloud
gaps:
- No published limits for the Cloud API, which is sold to automated CTMS/EDC integrations
  that will poll it.
- No runtime signal of any kind, so a client cannot back off before being throttled and
  cannot tell throttling from failure.