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✓ Live · Free during beta

Add delivery risk scoring to Shopify checkout in 5 minutes.

One <script> tag. No Shopify App approval. No npm install. Works with any theme — Dawn, custom, or headless.

Show me the snippet →Why it matters

3 steps. Live in 5 minutes.

Paste the snippet

Drop one <script> tag into your theme.liquid (or checkout.liquid for Shopify Plus). That's it.

We listen for postcode + carrier

The SDK auto-detects when a customer enters a postcode and picks a shipping method. Debounced, lightweight, no PII.

You react however you want

High-risk → upsell photo-proof shipping. Medium → require signature. Low → standard. Your business logic, our data.

Step 1 · Drop-in snippet

Paste this into your Shopify theme.

Online Store → Themes → Edit code → theme.liquid, just before the closing </body> tag.

html

<!-- WhereIsMyParcel Risk SDK -->
<script src="https://whereismyparcel.uk/wimp-risk.js" defer></script>
<script>
  document.addEventListener("DOMContentLoaded", function () {
    WIMP.attachToCheckout({
      postcodeSelector: "#checkout_shipping_address_zip",
      carrierSelector: "[data-shipping-method]:checked",
      defaultCarrier: "Evri",
      onRisk: function (risk) {
        console.log("[WIMP]", risk);
        if (risk.risk_level === "high") {
          // Show your "upgrade to safer delivery" UI here
          document.dispatchEvent(new CustomEvent("wimp:high-risk", { detail: risk }));
        }
      }
    });
  });
</script>

Other integrations (vanilla JS, cURL, WooCommerce)

Vanilla JS — call directly

javascript

// Or call the API directly
WIMP.checkRisk({ postcode: "M1 2AB", carrier: "Evri" })
  .then(function (risk) {
    // { risk_level, risk_score, failure_rate,
    //   recommended_action, recommended_carrier }
    console.log(risk);
  });

cURL — test the endpoint

bash

curl -X POST https://whereismyparcel.uk/api/risk-check \
  -H "Content-Type: application/json" \
  -d '{"postcode": "M1 2AB", "carrier": "Evri"}'

WooCommerce

Same <script> tag in your theme footer. Adjust the selectors to match WooCommerce's checkout fields (#billing_postcode, input[name='shipping_method[0]']).

Step 2 · Response shape

What you get back.

Field	Type	Description
risk_level	"low" \| "medium" \| "high"	Headline classification — what most retailers act on.
risk_score	number (0–100)	Granular score for advanced rules / A/B tests.
area_complaints	number	Total complaints in this postcode area, all carriers.
carrier_complaints	number	Complaints in this postcode for this carrier.
failure_rate	number (%)	Of resolved complaints in area, what % were lost / damaged / false delivery.
recommended_action	string	Plain-English suggestion for what to do.
recommended_carrier	string \| null	If risk is high, the lowest-complaint alternative carrier in this area.

What retailers do with the score.

🟢 Low risk

Do nothing

Standard checkout flow. Don't add friction where you don't need to.

🟡 Medium risk

Suggest photo proof

Show a £1.50 upsell for photo-proof-of-delivery. ~8% take rate, 100% margin.

🔴 High risk

Switch carrier or require signature

Auto-select a recommended alternative carrier or require signature on delivery to cut chargebacks.

Rate limits & beta terms.

✓ Free during beta for the first 20 retailers. No credit card.
✓ 10,000 calls/day per origin during beta.
✓ No PII collected. We only see postcode + carrier name. No customer names, no emails, no order data.
✓ ~80ms p95 latency from London. Endpoint is edge-deployed.
✓ Production pricing kicks in after the beta — see /for-business.

Already integrated? Tell us.

We're tracking which retailers are testing the snippet so we can prioritise the official Shopify App build. Join the early-access list to get a real-time dashboard, webhooks, and the official app the second it ships.

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