BillingWebhookKit

Test Lemon Squeezy webhooks locally

Developers need realistic order and subscription payloads before their billing code is live.

Open the free generator

Generate an event fixture

Choose order_created, subscription_created, subscription_payment_success, subscription_cancelled, or license_key_created and copy the generated JSON into your test suite.

Sign the raw body

Use a local test secret to generate the HMAC SHA-256 signature that Lemon Squeezy sends in the x-signature header.

Replay into your app

Use the generated curl command against a local tunnel, staging URL, or test route before enabling the production webhook.

FAQ

Should I paste a production webhook secret?

No. Use a throwaway test secret. BillingWebhookKit runs in the browser, but test credentials are still the right default.

Does this replace Lemon Squeezy webhooks?

No. It helps reproduce webhook events locally and in CI before you depend on live webhook delivery.

Use the free sample before wiring production checkout

Download a public sample pack with fake Lemon Squeezy fixtures, signature tests, contract checks, duplicate replay tests, and CI skeletons. The Pro Kit preview shows the full paid package structure without exposing the private archive.

Download free sample Inspect the public fixture, tests, review report, and workflow before buying. View Pro Kit preview Prepared as a CN¥69 digital kit; checkout stays disabled until live Lemon Squeezy configuration is connected.

Related payment webhook guides

Continue with adjacent checks before a billing route accepts paid checkout traffic.

All payment webhook guides Browse the full BillingWebhookKit guide index. Lemon Squeezy Webhook Test Checklist A launch checklist for Lemon Squeezy webhook signature verification, contract fields, idempotency keys, duplicate replay, and entitlement decisions. Lemon Squeezy Checkout Smoke Test Run a Lemon Squeezy checkout smoke test before launch: product price, checkout URL, paid order webhook, duplicate replay, and fulfillment checks. Lemon Squeezy PayPal Checkout Webhook Test Test a Lemon Squeezy PayPal checkout before launch: live checkout page, paid order webhook, signature gate, duplicate replay, and fulfillment evidence. Lemon Squeezy License Key Webhook Test Generate and test Lemon Squeezy license key webhook payloads for desktop apps, plugins, and downloadable products.