Catch duplicate and risky vendor invoices before you pay them

Reads incoming invoices, flags duplicates or vendor red flags, and alerts your team before anything gets paid.

How the work actually flows

It branches. Exactly one path is taken.

Pattern: Exclusive Choice (4) · Parallel Split (2)

flowchart TD trig>"new invoice email received"]:::trig s0["extract invoice data"]:::task s1["check duplicates and history"]:::task s2["score fraud risk"]:::task s3(("alert AP manager")):::human trig --> s0 s0 --> s1 s1 --> s2 gx{"× risk level low or high"}:::gate s2 --> gx p00["log for review"]:::task gx -->|"low or medium risk"| p00 p10["send Slack alert"]:::task gx -->|"high or critical risk"| p10 p11["email hold notice"]:::task p10 --> p11 p00 --> s3 p11 --> s3 out[/"risky invoices flagged before payment"/]:::out pay{{"prevents duplicate or fraudulent payments"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff
Starts itA stepA personOne path onlyResultPayoff
Build size
Advanced

A larger build with multiple systems, AI reasoning, and custom rules.

Business functions
AI Agents & Autonomous SystemsEmail AutomationMessaging & NotificationsImage & Media ProcessingSpreadsheet & Database OpsFinance & Accounting
Connects
GmailOpenAISupabaseSlack
Featured in

The problem it solves

You get invoices by email and have to manually check whether you've already paid this vendor, whether the amount looks normal, or whether the invoice is even real. A duplicate payment or a fraudulent invoice can slip through when your AP team is busy.

Who it fits

Accounts payable teams and finance managers processing vendor invoices by email.

How it works

  1. A new invoice email arrives in your accounts payable inbox
  2. AI reads the invoice and extracts the vendor, amount, dates, and line items
  3. The system checks for duplicate invoice numbers and unusual vendor history
  4. A second AI pass scores the fraud risk as low, medium, high, or critical
  5. High-risk invoices trigger a Slack alert and an email hold notice to your AP manager
What you get

Duplicate and fraudulent invoices caught before payment

Incoming vendor invoices get checked for duplicates and fraud risk automatically, with high-risk ones flagged before anyone pays them.

What you get

A risk-scored invoice log plus instant alerts on suspicious invoices before payment.

What you need

A Gmail account, an OpenAI API key, a Supabase database, and a Slack workspace.

We can build this. But should you?

The hard question is not how to build it. It is whether this is the right thing to build first.

That is what a Fractional Chief AI Officer figures out with you, before anyone writes a line of code.

Let's Talk Strategy

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