Monthly quotas (Free tier)
Free tier customers have monthly call limits per endpoint tier:
Pro customers have higher limits. See Plans for details.
When you exceed your quota
The API returns429 Too Many Requests with details:
- A
Retry-Afterheader with the reset date in ISO 8601 format - A link to upgrade in the detail message
Reset schedule
Quotas reset on the 1st of each month at 00:00 UTC. The reset date is included in the/v1/customers/me response as resets_on.
Monitoring your usage
Check your current usage at any time:Free endpoints
These endpoints are always free and don’t count toward any quota:GET /v1/health— API health checkGET /v1/pricing— Tier pricing informationGET /v1/calibration— Signal accuracy and calibration metrics