Practical writing on AI-coded delivery, regulated builds, and the economics of flat-fee custom software. Written by the senior engineers who deliver every Cardinal engagement.
Vibe Rescue is a fixed-scope, 14-day engagement that takes a vibe-coded app (Lovable, v0, Bolt, or Cursor) and hardens the layer underneath so it survives real users. Here is what the work actually covers, why vibe-coded apps fail in production, and who needs the service.
Seven Lovable app security gaps show up on almost every audit Cardinal Stacks runs: weak auth defaults, missing Supabase Row Level Security, API keys in git, no spend ceiling on LLM endpoints, console-only error handling, manual deploys with no rollback, and PII flowing to LLMs unredacted. This is the CTO's read on what to find and how to fix each one before you onboard paying users.
A Bolt or v0 app reaches production-ready in 14 calendar days for $4,800 flat. Lovable and Cursor projects of comparable scope run on the same timeline. Cardinal Stacks calls this Vibe Rescue, and what follows is the methodology underneath the number: what happens day by day, what slows the work down, and why parallel-agent orchestration is the only way the math works.
Lovable, v0, and Bolt can scaffold a healthcare app in an afternoon. None of them can sign a Business Associate Agreement, redact patient data before it reaches an LLM, or stand up an audit posture that survives a real breach review. This is what HIPAA-compliant app development actually requires, where AI coding tools come up short, and what has to be in place before your first patient signs up.
On a known deliverable, flat-fee software development is usually cheaper than hourly billing and ships faster against the same scope. The honest exception is genuine R&D, where scope is not yet knowable and hourly bills for the thinking. Here is what each model actually costs, where flat-fee fails, and how Cardinal Stacks prices the four engagements it sells, especially for regulated builds where compliance counsel needs a known scope to sign off.
Most vendors pitching SEC EDGAR custom software can describe the filing API. Fewer can describe what happens when a submission is rejected at 4:47pm on a deadline day, who signed off on the disclosure that went out, or how the audit chain holds up two years later. Evaluating a SEC EDGAR development partner means getting written answers on five things: production EDGAR systems shipped, audit-trail architecture, FINRA scoping by registration class, encryption surfaces, and data-handling contracts. This is what to ask, what audit-ready architecture actually looks like, and where Cardinal Stacks has shipped under SEC and FINRA-aware obligations.
Vibe-coded apps ship the demo, not the deploy. Here is the seven-surface checklist Cardinal Stacks uses to take a Lovable, v0, Bolt, or Cursor project from prototype to hardened production in two weeks, the failure modes that show up on each surface, and the diagnostic questions a founder can answer before sending the repo.
Custom software pricing finally caught up to AI-assisted delivery. Here is what a Cardinal Stacks build costs in 2026, why the timeline collapsed from twelve weeks to two, where the price actually goes inside the engagement, and how the gross-margin math lets a senior team ship at numbers a legacy agency cannot match.
Every post on this page is a long version of the same answer: send a project, get a written quote inside two business days. The fastest path is the form.