Prompt Debugger alternatives

Swipe sideways

1. 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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2. Learning6 Oct 2026 · #32Tutorial Gap FinderPaste the tutorial's outline and the step where you got stuck. Get the missing lesson, not a repeat of the steps you already did.InTutorial outline, a public CLI guide:→OutStopMedium

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   1. 0:00 Done vs stuckInstall and help worked on ledger 1.4.0. Step 3 points at a dashboard they do not have. Step 4 returns 401 bad signature.
   2. 0:08 The gapThe tutorial never says the secret in .env must be the same bytes the signature is computed over, or what header the local tool expects.
   3. 0:16 The lessonPut the placeholder secret in the env name the help text would show, restart the command, and compare the 401. No repeat of npm install.
   4. 0:24 StopIf it still 401s, the next paste is the header name from --help, not another install step.

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3. 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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4. Dev Tools7 Oct 2026 · #33API Error ExplainerPaste a status code and the response body. Get what broke, what to change in the request, and whether a retry will help.InRequest I sent: POST /api/refunds→OutRetryMedium

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   1. 0:00 The callPOST /api/refunds returned 401 bad signature twice. The body says the prefix should be sha256=. They may have signed with the example placeholder.
   2. 0:08 What brokeThe server rejected the signature. The status is not a transient outage. The prefix note is a hint about the header format.
   3. 0:16 The changeSign the raw body with the real secret, prefix the header with sha256=, and keep the same idempotency key so a later success does not double-apply.
   4. 0:24 RetryDo not retry the same bytes. Retry once after the header changes. Forging a signature for someone else's API is out of scope.

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