AI app rescue by stage — post-YC, pre-demo, post-launch, agency
By Hyder ShahFounder · Afterbuild LabsLast updated 2026-04-17
Four stage-specific rescue playbooks for AI-built apps: post-YC Demo Day stabilisation, pre-investor demo polish, post-launch crisis triage, and agency escape for client work. Each is a fixed-price, fixed-window engagement scoped to the exact pressure the founder is under at that moment. From $299 for a 48-hour triage up to $9,999+ for a full agency migration.
Rescue work is stage-dependent. The same underlying failure — Supabase RLS left open, Stripe in test mode, auth with the wrong redirect URI — looks like a completely different engagement depending on whether the founder is 72 hours out from an investor meeting, 48 hours past Demo Day, or 2 weeks past launch with a data leak compounding every hour. The stage framing changes the priority order, the acceptable risk profile, and the cadence of the engagement. A pre-investor polish sprint optimises for visual polish and demo-path reliability. A post-launch crisis optimises for revenue and data stabilisation. A post-Demo Day rescue optimises for surviving the 48-hour spike window without embarrassment.
Pick the stage that matches the pressure you are under right now. Each page walks the specific failure modes for that stage, the exact 48- or 72-hour playbook, and the pricing structure scoped to the urgency. For underlying symptom fixes and stack-wide playbooks, pair with the symptom fix hub and the stack fix hub. For alternatives to these rescue engagements — hiring a CTO, a cofounder, or an offshore shop instead — see the alternatives hub. Common vertical overlays are on the verticals hub (fintech, healthtech, SaaS).
Post-YC Demo Day Rescue
Just pitched at Demo Day and the AI-built MVP is buckling under the inbound? 48-hour stabilisation for the five things that reliably break — open RLS, no rate limiting, Stripe test keys, missing error states, connection pool exhaustion.
Pre-Investor Demo Polish
Three days before the investor meeting and the Lovable or Bolt app still has placeholder copy, test-mode Stripe, and a blank white screen on error? A 72-hour polish sprint across auth, payments, performance, and copy.
Post-Launch Crisis
Launched this week and the app is losing payments, leaking data, or crashing under real load? Emergency triage protocol: revenue first, data second, traffic third. Clean diff, written root-cause report, regression test.
Agency Escape for Client Work
Agency locked into Base44, Bolt, or Lovable for client apps and a compliance review caught the lock-in? Full migration to a standalone Next.js codebase the agency owns outright. Zero client downtime, full data migration, handoff docs.
Which stage matches your situation
The four stages cover the rescue windows where time pressure is acute and a generic engagement shape does not fit. If you are between stages — already pitched but not yet launched, or mid-agency engagement but not yet in a compliance review — the closest stage playbook still applies. The post-YC Demo Day rescue, for example, is the template for any batch-event spike (TechStars Demo Day, Antler showcase, accelerator pitch weeks). The post-launch crisis template works for any “we went live and something broke immediately” situation, not only post-launch in the literal sense.
If none of the stages map cleanly, start with the free rescue diagnostic. In 48 hours you get a written audit of the AI-built codebase, the specific failure modes relevant to your stack and vertical, and the fixed-price rescue path. The stage-specific playbooks above are refined from the hundreds of diagnostics we have run — they are the typical engagement shapes for founders at those stages, not the only engagement shapes we take on. For longer-running or recurring engineering work, the retainer support service covers the month-to-month option, and the AI app rescue service is the multi-week structural-rescue shape.