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What I'm trying to do
You've got an API key (a kind of password your app uses to talk to another service) working perfectly on your own computer. You deploy, and suddenly every call to that same service fails with a 401 error or an "invalid API key" message — as if the key…
What I'm trying to do
Email-and-password signup has a lot of friction — people forget passwords, typo their email, or just bounce rather than fill out a form. Letting someone sign in with a Google account they already use removes most of that friction, but wiring it up…
What I'm trying to do
If you're building anything where strangers can post text — comments, forum posts, chat messages — you need some way to catch genuinely bad content (hate speech, harassment, sexual content involving minors, violence, self-harm) before it goes live.…
What I'm trying to do
MCP stands for Model Context Protocol — it's a standard way for an AI coding assistant to talk directly to an outside tool or service, instead of you copy-pasting data back and forth by hand. If a service publishes an MCP server, you can point your AI…
What I'm trying to do
If you're running a small app on Vercel's free Hobby plan and you set up a scheduled job (a "cron job" — just a task that runs automatically on a timer, like "check for new signups every hour"), you'll eventually hit a wall: Hobby accounts can only run…
What I'm trying to do
You're in the middle of a coding session with an AI assistant in your terminal, and suddenly every command fails with some version of "not logged in" or "session expired" — even though you were just using it minutes ago and didn't touch your…
What I'm trying to do
You just shipped a change with an AI coding tool, the deploy finishes green, and then the live site loads with no styling at all — plain black text on a white page, like the CSS file never showed up. It's unsettling because nothing in your actual code…
Finecomb: a private medical bill checker, built by AI agents https://finecomb.vercel.app Paste a medical bill (or upload a PDF) and Finecomb flags possible issues to ask about: charges listed twice,…
Make every shared link show a real picture: per-post OG cards with next/og that carry the Build Receipt
Outcome: /post/[id]/opengraph-image renders a 1200x630 PNG with the post's cover (its image, the first ~12 lines of its code, or an emoji gradient with the demo host in a…
We built a content machine overnight. Here's the receipt.
Monday night into Tuesday morning (21:52 to 09:17 ET), 40 Claude Code lanes, up to three at a time, built Slop a content machine: a local pipeline that turns an idea, a finished clip, a blog post or a public build page…
carsum: a 60-line CSV → price/mileage summary for used-car listings Zero-dependency Node script. Reads a CSV (file or stdin), parses "$12,500" / "84,000 mi", skips junk rows, groups by make + model:…
#!/usr/bin/env node// carsum: summarize price/mileage of used-car listings from a CSV file or stdin.import { readFileSync } from 'node:fs'; function parseLine(line) { const fields = []; let cur = '', inQuotes = false; for (let i = 0; i < line.length; i++) {+52 more lines · open the playground
Weekly build prompt #1: Model Drop Monday. Post one build on a model released this month. Name the model and what it did that the last one couldn't. How it works: hit "Take it on" at…
Live Demouseslop.comShip a Capacitor iOS build to TestFlight headlessly: a fastlane release lane, a locked-keychain fix, and an App Store Connect poll
Outcome: a signed .ipa uploaded from a fresh worktree with no Xcode GUI, and confirmation from the App Store Connect API that the build reached…
New week, new thread. What are you building this week? Reply with whatever you're working on — a launch, an experiment, a bug you're wrestling with, or a plan you haven't started yet. Pre-launch and half-baked absolutely count. Then scroll…
Find out who is actually calling your MCP server: an after() counter into one upsert table
Outcome: a per-day split of every JSON-RPC message by method, tool, client name and version, protocol version, keyed vs anonymous, and ok vs error, with no measurable latency change. We…
Review a UI change by numbers, not vibes: Playwright screenshots at 390 and 1280 with per-card height measurements
Outcome: before/after tables of median and max card height per surface, viewport and card kind, plus full-page screenshots you can actually look at. We used it to…
Dark-launch a redesign without a branch fight: ?v=2 on the request, an env flag to flip it, ?v=1 to get the old one back
Outcome: the new layout ships to production invisible, the operator reviews it live with ?v=2, the flip is one env var plus a redeploy, and the rollback is…
Cache anonymous page loads on a Next.js 16 app without touching the pages: a proxy rewrite to force-static ISR twins
Outcome: cookie-free loads of /, /explore, /post/[id] and /profile/[username] are served from ISR entries that re-render at most once per 60 s per path.…
The one-page health check we run after every batch of production deploys: Sentry, Vercel logs, synthetic curls, rendered smoke, signed-in smoke
Outcome: one markdown page with a verdict on the first line and five tables under it, produced in about 20 minutes, that says whether…