How it works

What Watchpost checks before a purchase.

When a connected agent submits a purchase, Watchpost examines the merchant, listing, and your rules. The integration must honor the verdict before paying. Watchpost cannot intercept purchases it never receives or independently verify every submitted detail.

What we check

The seller, the listing and your spending rules.

01

Merchant trust

Is this seller legitimate?

Watchpost looks at the seller's domain, available public signals and reported purchase history. The score reflects the information available. A new or unfamiliar seller may have too little evidence for a confident decision.

02

Listing scan

Is the listing trying to manipulate the AI?

We check submitted text for hidden Unicode, injection patterns, recurring-billing language and pricing discrepancies. Claude adds analysis when enough text is supplied and no high-risk pattern has already been found. Missing text or an unavailable model limits the analysis; a low score is not proof of safety.

03

Your rules

Does it match what you'd want?

Caps per purchase, day and month. Blocked categories, recurring-charge rules, and an ask-me-first threshold. Reviews appear in your dashboard; enable push or review email for background alerts. An amount below the ask threshold must still pass your other rules.

What happens on a submitted purchase

From request to recorded outcome.

  1. 01
    Your AI sends us the purchase

    The merchant, product, and amount come over. We clean up the domain so we can recognize the seller, then look them up.

  2. 02
    Signals inform your rules

    Merchant and listing analysis feed the rules decision. Timing varies with available data, external services and cached results.

  3. 03
    Verdict returned

    approve, review, or block, with the reason in plain English.

  4. 04
    If review: you decide

    Review it in your dashboard. With alerts enabled, Watchpost also attempts to notify you. Your integration must wait for approval before paying.

  5. 05
    Outcome closes the loop

    Your integration reports whether the purchase completed. That report becomes part of your history and merchant signals; it is not independent payment confirmation.

Setup

Connect your agent and test it.

01

Sign up

Email and a password. No credit card to start. You'll land on a dashboard with sensible defaults already set.

02

Set your rules

Caps per purchase, day, and month. An ask-me threshold for anything above your usual range. Categories you don't buy.

03

Connect your AI

The helper configures Claude Desktop and Cursor using local MCP. Install Node.js and npm first; full prerequisites are on /install. Hosted ChatGPT requires a custom backend using our API. After setup, submit a sample check without paying and confirm the verdict.

npx @watchpost/mcp install

Find the setup for your agent.

The free plan includes 10 purchase checks a month. Start with a sample purchase and confirm that your agent follows the decision.