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davidr0007
Known Participant
Feb 17, 2026 10:54 AM UTC
Question

Exposed WebAPI GET request size limit?

I have found information regarding a 5MB limit when my Appian application uses an Integration Object to call another API hosted on an external system.

However, if my Appian application is exposing a WebAPI, so that an external system can make a GET request to my Appian application, is there a size limit on the JSON payload that my Appian WebAPI can return to that external system?

2 replies

shubhama926776
Brainy
Feb 17, 2026 11:23 AM UTC

No official size limit on Web API GET JSON responses, but use pagination to stay under practical memory/timeout constraints (~10MB recommended).
URL length limits GET params (~8K chars); switch to POST for larger payloads.

शुभम्
stefanhelzle0001
Brainy
Feb 17, 2026 11:38 AM UTC

With data volumes growing every day, you will have to implement paging and a page size limits anyways.