{"uid":"cap_ELGo_ro72FUlnzGiUh9pG","slug":"stablemerch-checkout-session-complete-edcda4fb","name":"StableMerch Checkout Session Complete","description":"Pay for a StableMerch UCP checkout session and send its prepared Printify order to production. Requires checkout status ready_for_complete.","url":"https://stable-merch-git-rfs-checkout-nites-merit-systems.vercel.app/api/ucp/checkout-sessions/stablemerch%3Acheckout%3Acmqiprmxe0000l504csr8ttju/complete?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"id":{"type":"string","minLength":1,"description":"UCP checkout session ID being completed. AgentCash clients may instead send checkout_session_id."},"payment":{},"checkout_session_id":{"type":"string","minLength":1,"description":"AgentCash checkout session ID being completed. UCP clients may instead send id."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"50","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$50/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"50","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"50","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5_kTNZoYT48Eec4DduFce","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"50","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Completes a StableMerch UCP checkout session by processing payment and submitting the prepared Printify order to production.","exampleAgentPrompt":"Complete my StableMerch checkout session 'stablemerch:checkout:cmqiprmxe0000l504csr8ttju' — it's ready for completion, so go ahead and pay and send the order to Printify production.","exampleUseCases":[{"title":"Automated merch order fulfillment","prompt":"My StableMerch checkout session stablemerch:checkout:cmqiprmxe0000l504csr8ttju is ready — please complete it, process the $50 payment, and send the Printify order to production."},{"title":"Agent-driven drop shipping checkout","prompt":"I've set up a custom merch checkout session on StableMerch and it shows status ready_for_complete. Can you finalize it and get the order into production with Printify? The session ID is stablemerch:checkout:cmqiprmxe0000l504csr8ttju."},{"title":"Programmatic merchandise print order submission","prompt":"Complete my StableMerch UCP checkout session ID stablemerch:checkout:cmqiprmxe0000l504csr8ttju and submit the Printify order — I'm ready to pay now."}],"resultDescription":"On success, returns confirmation that the checkout session has been completed, payment processed (50 USDC), and the Printify order has been sent to production for fulfillment.","failureModes":["Checkout session not in ready_for_complete status — order not yet prepared","Invalid or missing checkout session ID — returns 400/422 error","Payment failure or insufficient USDC balance — transaction not processed","Session already completed — idempotency violation","Printify production submission failure — order not forwarded"],"whenToPreferThis":"Use this endpoint when you have an existing StableMerch UCP checkout session in the ready_for_complete state and need to finalize payment and push the prepared Printify order to production. This is specifically for the StableMerch/UCP platform rather than direct Printify API calls or other print-on-demand services.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:34:03.463Z","isFirstParty":false,"canonicalSlug":"stablemerch-checkout-session-complete-edcda4fb"}