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Getting StartedPostman Collection
For the complete documentation index, see llms.txt. This page is also available as Markdown.

Note Text & Attachment

File Attachments

File attachments in the bunq app allow users to attach images or documents to payments, making it easy to reference receipts, invoices, or other relevant files later. Each attachment must have a specific file type, such as JPEG, PNG, or PDF. The file is first uploaded to a monetary account, where bunq stores it securely and returns a unique attachment ID. Once uploaded, the attachment can be linked to a specific payment as a note-attachment, optionally including a description to provide context. This ensures that all files are properly associated with their payments and easily retrievable.

Text Notes

In addition to file attachments, users can add plain text notes to payments as note-text. Text notes do not require file uploads and are useful for adding comments, explanations, or any textual reference that supplements a payment. You can add and retrieve text notes direct through the API By combining file attachments and text notes, users can maintain a fully annotated and organized payment history.

Getting started with files

This makes it easy to reference receipts, invoices, or any relevant information later. Each attachment must have a specific file type, such as JPEG, PNG, or PDF, and the file is first uploaded to a monetary account before it can be linked to any payment.

The process involves multiple steps:

  1. Create the attachment: Users must first upload the file to the monetary account. This step requires providing the file itself along with a brief description. bunq stores the attachment securely and returns a unique attachment ID, which will be used in the next step.

  2. Link the attachment to a payment: Once the attachment exists, it can be linked to a specific payment as a note-attachment. This allows users to associate files like receipts or invoices directly with a transaction for easy retrieval. An optional description can also be added to give context to the attachment within the payment.

  3. Add text notes (optional): Separately, users can also add plain text notes to a payment as a note-text, without uploading a file. This is useful for quick comments, explanations, or any textual reference that supplements the payment.

By following this multi-step approach—uploading the file, linking it to a payment, and optionally adding text—users can keep their payment history organized and fully annotated. This structured workflow ensures that all references to payments are clearly documented and easily retrievable within the bunq app.

Retrieving attachments

You can retrieve notes and attachments easily too simply use the GET endpoints too

GET /v1/user/{userID}/monetary-account/{monetary-accountID}/payment/{paymentID}/note-attachment HTTP/1.1
Host: public-api.sandbox.bunq.com
User-Agent: text
X-Bunq-Client-Authentication: text
Accept: */*

This will return you a attachment Object

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