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eSign API

Move a PDF through a clear signing journey.

Upload a document, request an Aadhaar e-signature and track its status. Keep the signing request linked to the document in your approved process.

Talk to our team Explore features

Need API access? Talk to our team.

Published API reference Authorised access Integration support

FROM REQUEST TO REVIEW

A clear path through the process.

  1. Prepare and upload the PDF

    Check the document content, signer requirements and permitted use before upload.

  2. Create the signing request

    Set the signer details, signature positions, notifications and expiry.

  3. Follow the request status

    Check the outcome and handle completed or outstanding requests in your own workflow.

A CLOSER LOOK

What you can do with eSign.

See how each feature works.

  1. PDF document upload

    Upload the PDF to receive the document reference used by the signing request.

  2. Aadhaar e-sign request

    Create the documented Aadhaar signing request against the uploaded document.

  3. Signer positions

    Supply signer details and the positions where signatures are required.

  4. Expiry and notifications

    Set the documented signing-link expiry and notification modes for the request.

  5. Signing-status retrieval

    Retrieve the request and signed-document status using the provider or verification reference.

BUILT AROUND YOUR WORK

Where eSign fits.

Common uses for this API.

Agreement workflows

Add a signing step for documents your organisation has confirmed are suitable for this process.

Partner paperwork

Connect the signing request to a partner's existing documentation record.

Signing follow-up

Check the request status before asking a signer to complete an outstanding step.

FOR YOUR DEVELOPMENT TEAM

Take the next step with the right details.

See the documentation for request fields, responses and setup instructions.

  • Check the published inputs, response format and error handling.
  • Keep credentials on your server and collect only authorised data.
  • Confirm provider access and deployment requirements with BankU.

The BankU multipart request limit is 6 MiB, including upload overhead. Confirm document suitability and signer consent before use; API access does not itself establish legal approval.

GOOD QUESTIONS

Before you get started.

Common questions about eSign.

Can I sign an image file directly?

The published upload operation requires a PDF document.

How long can the signing link remain available?

The current request contract allows an expiry of up to 15 days.

Is every document suitable for this signing method?

Do not assume so. Confirm that the document and intended use are suitable under your organisation's applicable requirements before starting the workflow.

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