Integrate with a warranty platform API (such as Extend or a similar provider) by sending a POST request at checkout with the product SKU, product price, merchant identifier, and the selected warranty term (e.g., 1-year, 2-year, 3-year)
Receive a warranty offer response containing the warranty product ID, warranty price, and coverage terms summary; display the offer alongside the product in the cart with the incremental cost clearly shown
Capture the customer's purchase decision; on purchase, send a warranty activation request to the platform with the order ID, customer email, product serial number if available, and warranty product ID
Receive a warranty contract ID in the response; store it against the order record and trigger a welcome email to the customer with the contract number and claims contact information
Handle product returns by calling the warranty cancellation API with the contract ID; confirm refund of the warranty price and update the order record
Known gotchas
Warranty regulation varies by state; service contracts and extended warranties may be regulated as insurance products in some states (notably California and Florida), requiring the platform or merchant to hold appropriate licensing
Serial number capture at point of sale is often incomplete for online transactions; design the activation flow to allow the customer to submit the serial number post-purchase rather than blocking activation on its absence
Product price thresholds often determine warranty eligibility (e.g., minimum $25 or $50 product price); validate eligibility before presenting the offer to avoid a failed activation call at checkout
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