Overview

BLU DELTA Document API

The BLU DELTA Document API is a secure HTTPS-based REST service that leverages advanced AI models to extract structured data from semi-structured business documents.
It supports multiple file formats, including PDF, TIF, and PNG. Documents are uploaded via POST requests, and the API responds with structured JSON for seamless system integration.

Latest Major Version: V2
Endpoint: https://document.bludelta.ai/
API Documentation

Key Features

1. Document Grouping

Automatically groups pages belonging to the same document in multi-page scans.
Example: A single uploaded PDF containing multiple invoices and delivery notes will be analyzed, and the API will return a JSON mapping each page to its respective document.
See API documentation for implementation details.

2. Document Classification

Classifies business documents by type using AI-powered prediction models.
Supported categories include:

Invoice
Order
Delivery Note
And more...
See API documentation for a full list.

3. Data Recognition & Extraction

Extracts key structured fields from semi-structured business documents.
Typical use cases include extracting:

Invoice number, date and total amounts
Order and delivery references
VAT, and currency
Bank details (IBAN, BIC)
Contact information

The recognition model is trained on diverse document layouts, ensuring high accuracy even with varying formats.

If a document type is not recognized or requires customization, please contact: office@blumatix.com

4. Deprecated Features in BLU DELTA Document API v2

Several features available in BLU DELTA Capture API v1 are currently not supported in BLU DELTA Document API v2. These include, among others:

Field-level Confidence values
Location (bounding box) information
E-Invoice processing
Returning a ResultPDF
Master-Data-Comparison via the BLU DELTA Resource Upload API
Bar-code and QR-code recognition

For compatibility reasons, Document API v2 continues to return a default Confidence value of 0.85. This is a defined behavior until further notice, as several partner systems cannot handle missing Confidence values. Returning 0 or near-zero values could negatively impact end-user productivity.

Developers are strongly encouraged to design their systems without relying on Confidence values. This ensures forward compatibility with future service versions.

If there is a strong business need for one of the deprecated features, please contact your Account Manager. Feature re-introduction will be evaluated on a case-by-case basis.