Learn why Sandbox uses POST requests for data retrieval to protect sensitive information.
Sandbox uses POST requests instead of GET for retrieving sensitive data. This design choice places identification parameters (PAN, Aadhaar, GST, etc.) in the request body rather than in URLs.
Why post instead of get?
Reduced logging risk
Intermediary servers typically do not log request body data. Most systems log only request URLs and headers, omitting the body. This practice reduces the chance of accidental data exposure in server logs.
Enhanced security
Data in the request body benefits from additional security measures:
Not visible in browser history or bookmarks
Not cached by default
Not logged in server access logs
Protected during transmission with https encryption
Never include sensitive identifiers like PAN, Aadhaar, or GSTIN in query parameters or url paths.
Example
Instead of:
GET /api/kyc/pan/verify?pan=ABCDE1234F
Sandbox uses:
POST /api/kyc/pan/verifyContent-Type: application/json{ "pan": "ABCDE1234F"}
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