New tool checks whether a document is fake before a business acts on it

Extend, a company that builds software to read business documents, has launched Verify. It is a tool that checks whether a document is fake before a business acts on it. It is built for developers and for AI agents, which are automated programs that carry out tasks on their own. Verify is available now.

Why it exists

Many business tasks start with a document. A bank statement supports a loan. An invoice triggers a payment. A receipt backs an insurance claim. Companies mostly rely on people to catch fakes. Extend says AI has made forgeries easy to produce and impossible to spot by eye, and that fraud that slips through can cost businesses millions of dollars.

What it checks

Verify looks at how a document appears, how the file is built and its revision history. It combines specialised models, forensic checks and AI-driven analysis. It is designed to find four kinds of problems:

• Documents created entirely by AI
• AI edits inside an otherwise genuine document, down to a single character
• Ordinary digital edits, such as patched text and image overlays
• Changes made after a document was digitally signed

The tool returns the signals it found, risk scores, explanations and traceable evidence. A business can use that to decide which documents need a closer look.

How well it works

In a benchmark evaluation, Extend says Verify detected 96.3% of fraudulent documents. It wrongly flagged 4.0% of genuine ones. In plain terms, about 96 of every 100 fake documents were caught, and about 4 of every 100 real ones were sent to a person for review. These are the company's own figures. The material does not mention independent testing.

Who it is for

Extend gives three examples. A lender could flag altered income documents before a credit decision. A payments team could spot a modified invoice before paying it. An insurer could catch a fabricated receipt before settling a claim. Verify works as a standalone API, meaning a connection other software can use, or as an add-on to existing Extend tools. Extend's customers include Mercury, Brex, Zillow and First American Financial. The material does not say which of them use Verify.

What is not known yet

Pricing was not given. Neither were details on how the benchmark was built or how Verify performs on real documents outside it. Those would help a business judge how many genuine files it would need to review by hand.