Tripwire Fernbrook SupplyPayPal sandbox

Wrong prices stop here. Before PayPal.

Tripwire is a circuit breaker between your store and PayPal checkout. A slipped decimal, a bad supplier feed or a rush of bots trips that product’s breaker, so nobody pays the wrong price. Only you can reset it.

Tripwire

Test it
    CheckoutShoppers and bots
    • The AI can add a hold, never lift one.
    • More than 5 checkouts in a minute trip it.
    • Only your lever resets it.

    Loading the breakers…

    PayPal
    orders at a tripped price
    0
    captured
    $0.00
    authorized, waiting
    0

    Every order is an authorization. It is captured only at a price you trust; otherwise it is voided.

    The AI can add a hold, never lift one. More than 5 checkouts in a minute trip it. Only your lever resets it.

    Loading…

    Tripwire receipt
    Kept from
    wrong prices    $0.00
    Checkouts refused0
    PayPal orders at a tripped price0
    Voided, money released0
    Of that, from the demo’s simulated bots$0.00
    1. Nothing printed yet. Start with step 1.

    Every PayPal ID printed here is a real sandbox ID.

    Beyond the three steps

    Test it your way.

    Import a price list

    Pick a preset, each one a real kind of pricing mistake, or paste your own CSV.

    Paste your own CSV
    Up to 100 rows

    Point the bots anywhere

    25 checkouts hit one product at the same moment, the way deal bots and AI shopping agents pounce on a mispriced listing. PayPal test cards, no login.

    Connect your own checkout

    Your server asks Tripwire before it creates a PayPal order, and again before it captures. Those sales print on the receipt too.

    Your API key: Loading…
    • POST /api/v1/check before you create the PayPal order
    • POST /api/v1/capture-check before you capture it
    • POST /api/mcp for AI agents: check_price and check_capture
    Example request