Vibe Coding

Swipe sideways

1. Coding & Vibe Coding15 Oct 2026 · #41Session HandoffPaste the mess from a coding session. Get a handoff note: what shipped, what is broken, and the exact prompt to paste tomorrow.InBranch: feat/billing-ui→OutTomorrow's first promptEasy

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   1. 0:00 The swampBranch feat/billing-ui. Auth works. Billing page half done. Stripe webhook returns 400. Receipt email never fires.
   2. 0:08 What actually shippedLogin on staging, pricing table render, stripe package installed. Plan change is still a stub. PayPal left alone on purpose.
   3. 0:16 What is brokenWebhook 400, missing signature check, BillingForm customerId null, receipt email not wired. Ranked by what blocks the rest.
   4. 0:24 Tomorrow's first promptA paste-ready prompt that starts at the webhook 400, forbids touching PayPal, and asks for a signature check plus a failing test.

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2. Coding & Vibe Coding29 Sep 2026 · #25Env Var AuditorPaste .env.example and the code that reads it. Get missing keys, unused keys, and names that look like live secrets.In.env.example→OutThe fixMedium

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   1. 0:00 The driftPORT and DATABASE_URL are read. DATABASE_URL is required. FLY_REGION is read and missing from the example.
   2. 0:08 UnusedNothing in the example is unread. FLY_REGION is the gap, the other way.
   3. 0:16 The live-looking valueSTRIPE_SECRET_KEY's example starts with sk_live_. That prefix does not belong in an example even if they say it is fake.
   4. 0:24 The fixAdd FLY_REGION=local. Change the Stripe example to a sk_test_ placeholder. Do not print a real key.

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3. Coding & Vibe Coding17 Sep 2026 · #13Test Plan from the PromptPaste the prompt you used to vibe-code a feature. Get the checks to run before merge, including the case that prompt forgot.InPrompt I gave Cursor:→OutLaterMedium

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   1. 0:00 The original promptA refund button for paid orders under 7 days, a POST, and a success toast. No failure, no double click, no permissions.
   2. 0:08 The forgotten casesA 500 from the API, a second click, an order already refunded, and a viewer who is not allowed to refund.
   3. 0:16 Before mergeThree checks: the happy path you asked for, the failed POST does not say Refunded, and a double click does not send two POSTs.
   4. 0:24 LaterThe 7-day boundary and the hidden button are listed as follow-ups, not pretended to be done.

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4. Learning12 Sep 2026 · #08Explain Like I'm ShippingLearn a concept by making the model explain the smallest version you could ship this week, then quiz the gap.InConcept: idempotency keys on a POST that creates an invoice.→OutThe quizEasy

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   1. 0:00 The constraintA TypeScript billing API, Postgres already there, one afternoon, no consensus lecture.
   2. 0:08 The tiny versionA unique key column on invoices, the client sends it, a retry with the same key returns the same invoice row.
   3. 0:16 Left outNo new queue, no vendor, no lecture about exactly-once delivery in the abstract.
   4. 0:24 The quizThree questions: where the key is stored, what a second POST returns, and what you do if the key arrives empty.

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5. Coding & Vibe Coding5 Sep 2026 · #01Diff Risk ReviewerRead a vibe-coded diff for behavior risk: what changed, what can break, and which check to run before you push.Indiff --git a/app/api/orders/route.ts b/app/api/orders/route.ts→OutThe checkMedium

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   1. 0:00 The intended changeOne sentence: checkout should trust the price the server already computed.
   2. 0:08 The hunk that movedThe reducer that summed item.price * qty is gone. total now comes from body.total.
   3. 0:16 The riskA client can post any total, including zero or a negative, and the route marks the order paid.
   4. 0:24 The checkSend the old cart fixture and assert the stored total matches the server sum, not the body.

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