Limit typeLimit
Size of one uploaded Document50 MB
Documents per Signature Request50
Signers per Signature Request100
Fields per Signature Request500
Followers per Signature Request10
Number of pages for a document including at least one Smart Anchor150 pages
Be careful, the more Smart Anchors you have in a document, the more time your request will take.
The default validity of a signature_link48 hours
However, this duration can be modified (minimum 1 hour and maximum 72 hours) by making a request to the support.
Electronic seal fields per seal200
Electronic seal image size500 KB
Electronic seal document size50 MB
Electronic seal images50

Rate limit

A rate limit policy covers all the endpoints of the API.

The sandbox and production environments have different rate limit.

Sandbox30 requests/min200 requests/hour
Production60 requests/min1200 requests/hour

Your remaining calls quotas are sent in all the API responses through X-Ratelimit-Limit-Remaining-Minute and X-Ratelimit-Limit-Remaining-Hour HTTP headers :

HTTP/2 400 
< x-ratelimit-limit-hour: 1200
< x-ratelimit-limit-minute: 60
< x-ratelimit-remaining-hour: 1197
< x-ratelimit-remaining-minute: 59

If one of your calls is rejected because a rate limit threshold is hit, you will receive the status code 429 and "too many requests" as explanation


The rate limit policy can be customised to fit your needs

If you'd like to request a change in your Rate-limit, please fill out this form.

Our support team will review your request and work with you to find the best solution.