AI app retainer support — 40 hours, rules-file governance, priority rescue.
A Lovable support retainer that installs an agent rules file, reviews every Cursor and Claude Code PR before merge, and answers the phone at 10pm when the webhook stops firing. Month-to-month, 30-day cancel, no annual contract.
AI app retainer support is a $3,499/month rolling engagement: 40 hours of senior engineering on your Lovable, Bolt, Cursor, or Claude Code app, plus priority rescue queue with 4-hour business-day response on production-down incidents. Every retainer installs and maintains an agent rules file (.cursorrules / CLAUDE.md) so regressions caught in review cannot re-land. Includes monthly security scan, Slack access, and a written monthly changelog. Unused hours carry over 30 days. Month-to-month with 30-days' notice to cancel — no annual contracts.
Symptoms an AI app monthly retainer fixes
The Lovable support retainer and Cursor regression retainer share a signature: the agent keeps re-introducing the same bugs because no one is maintaining the guardrails between prompts.
| Symptom | Root cause | Retainer response |
|---|---|---|
| Cursor regenerates a whole file and breaks the surrounding module | No agent policy file; every prompt invents its own conventions | We install and maintain `.cursorrules` / `CLAUDE.md` with stack rules, naming, and forbidden patterns |
| Claude Code keeps introducing the same three bugs across prompts | No regression-pattern memory; each session starts from scratch | Rules file maintains an anti-patterns section updated every time a regression is caught in review |
| Weekly Lovable prompt loop keeps undoing last week's fix | Lovable does not respect prior code review discipline | Policy file pinned in project scope + weekly review of every Lovable-generated PR before merge |
| One-off freelancer ghosts on Friday at 10pm | No continuity; every incident starts by re-explaining the stack | Priority rescue queue with 4-hour business-day response on production-down and a number to call |
| Founders burning weekends debugging the AI's output | No senior review layer before the PR merges | Senior AI-PR review on every Cursor / Claude Code / Copilot / Windsurf PR with 24-hour turnaround |
| Monthly retainer invoices with no visibility into what got done | No reporting cadence; hours vanish into a black box | Written monthly changelog with shipped work, hours used, risks flagged, and next month's top three |
Monthly Cursor regression retainer schedule
From kick-off onboarding to month-end changelog and rolling renewal. Rules file installed week one, review cadence live week two, priority rescue queue live week three.
- W1Kick-off
Onboarding & rules-file install
Onboarding call, repo/monitoring access, shared Slack. We install the first draft of the agent policy file (.cursorrules / CLAUDE.md) and agree the month's priority list.
- W2Cadence start
Weekly AI-PR review begins
Every Cursor / Claude Code / Copilot / Windsurf PR routes through senior review with 24-hour turnaround. Regressions caught feed straight back into the rules file.
- W3+Continuous
Priority rescue queue live
Production-down tickets jump the queue with 4-hour business-day response. Standard work ships on the agreed priority list. You approve every merge.
- M1Month-end
Monthly changelog + rules-file diff
Written changelog: hours used, what shipped, what's pending, risks. Plus the rules-file diff — every new rule added after a regression catch is documented.
- M+Renewal
Rolling renewal or clean hand-off
Month-to-month by default. Cancel anytime with 30 days' notice; we hand off clean with rules file, runbooks, and regression floor intact. Most clients stay 6–12 months.
- W1Kick-off
Onboarding & rules-file install
Onboarding call, repo/monitoring access, shared Slack. We install the first draft of the agent policy file (.cursorrules / CLAUDE.md) and agree the month's priority list.
- W2Cadence start
Weekly AI-PR review begins
Every Cursor / Claude Code / Copilot / Windsurf PR routes through senior review with 24-hour turnaround. Regressions caught feed straight back into the rules file.
- W3+Continuous
Priority rescue queue live
Production-down tickets jump the queue with 4-hour business-day response. Standard work ships on the agreed priority list. You approve every merge.
- M1Month-end
Monthly changelog + rules-file diff
Written changelog: hours used, what shipped, what's pending, risks. Plus the rules-file diff — every new rule added after a regression catch is documented.
- M+Renewal
Rolling renewal or clean hand-off
Month-to-month by default. Cancel anytime with 30 days' notice; we hand off clean with rules file, runbooks, and regression floor intact. Most clients stay 6–12 months.
The agent rules file a retainer installs and maintains
This is the exact shape of the .cursorrules / CLAUDE.md we install in retainer week one. Every regression caught in review lands in the anti-regressions section so the same bug cannot ship twice. It is the single biggest lever on AI-app quality across Cursor, Claude Code, Copilot, and Windsurf.
01// .cursorrules (installed W1, updated on every regression caught in review)02 03# Afterbuild Labs / Project Rules — maintained under Retainer Support04 05## Stack06- Next.js 16 App Router · React Server Components by default07- Supabase Postgres with Row-Level Security ON for every table08- Stripe via `stripe-node`; webhook handlers MUST verify signatures + be idempotent09 10## Forbidden patterns (auto-reject in review)11- `service_role` key referenced anywhere outside `/server/` handlers12- Client components importing from `/server/` boundary13- New tables created without a matching RLS policy in the same PR14- Stripe webhook handlers without `stripe.webhooks.constructEvent(…)`15- Raw SQL with template interpolation (use parameterised queries or Supabase query builder)16 17## Required patterns18- Every new route gets a matching Playwright smoke test in `tests/e2e/`19- Every payment handler has a Vitest idempotency test20- Env vars consumed via `import { env } from "@/env"` — never `process.env` directly21- Errors thrown as typed classes from `@/lib/errors`; logged via `logger`22 23## Anti-regressions (carry forward every month)24- 2026-02-14 · session cookies must include `sameSite: "lax"` + `secure: true`25- 2026-03-03 · `app/api/stripe/webhook/route.ts` is Node runtime, not edge26- 2026-03-21 · never call `revalidatePath` inside a loop — batch itWhat the AI app monthly retainer changelog looks like
Sent the first business day of the next month. One page. No meeting required. Auditable for quarterly board reports.
- — Stripe subscription-upgrade webhook handler (idempotent)
- — Supabase RLS tightened on `invitations` table
- — Next.js 16 upgrade + hydration regressions fixed
- — 4 Cursor PRs reviewed · 1 blocked, 3 merged
- — 2 dependency CVEs (high) queued for April patch
- — Redis memory at 72% — bumping next sprint
- + 2026-03-03 webhook route = Node, not edge
- + 2026-03-21 no `revalidatePath` in loops
- 1. Ship invite-flow v2 (10h)
- 2. Supabase pooler migration (8h)
- 3. CVE patches + regression sweep (6h)
What the Lovable support retainer ships every month
- 0140 hours/month of senior engineering — features, bug fixes, upgrades, refactors
- 02Agent rules file (.cursorrules / CLAUDE.md) installed and maintained across every retainer month
- 03Senior review on every Cursor, Claude Code, Copilot, Windsurf, and Lovable PR before merge
- 04Priority rescue queue — production-down tickets get 4-hour business-day response
- 05Monthly security scan: RLS drift, secrets, dependency CVEs, expiring certs
- 06Shared Slack channel with async updates and an optional 30-minute weekly sync
- 07Monthly written changelog: hours, ship log, risks, rules-file diff, next month's top three
- 08Unused hours carry over for 30 days — no month-end waste, no indefinite accrual
- 09Rolling month-to-month — cancel anytime with 30 days' notice, no annual contract
AI app retainer support — one tier, priced clean
- turnaround
- 40 hours / month
- scope
- Senior engineering on your Lovable, Bolt, Cursor, or Claude Code app. Rules-file governance, AI-PR review, priority rescue queue, monthly security scan, written changelog.
- guarantee
- Unused hours carry 30 days. Month-to-month, 30-day cancel. No annual contract.
Overflow hours billed at $175/hr. Expanded retainer with 80 hours/mo at $5,999 quoted on the onboarding call. On-call retainer with 24/7 PagerDuty quoted separately — typical shape adds a second engineer.
If you need less than 25 hours consistently, run Ongoing Maintenance Starter at $1,500/mo instead. If you need pre-launch build work, start with Finish My MVP.
Retainer vs hourly vs full-time hire
| Dimension | Hourly freelance | Full-time hire | Afterbuild Labs retainer |
|---|---|---|---|
| Monthly cost | $175-250/hr · unpredictable | $250k+ fully loaded | $3,499 fixed · 40h |
| Agent rules file | Not in scope | If they remember | Installed W1, maintained monthly |
| AI-PR review SLA | No SLA | Whenever free | 24 hours every PR |
| Critical SLA | None | Working hours | 4 business hours |
| Lock-in | Per engagement | 12-24 months + severance | 30-day cancel |
Pick AI app retainer support if…
- →You launched an AI-built app (Lovable, Bolt, Cursor, Claude Code) and now ship weekly with AI tools
- →You want a senior engineer reviewing every Cursor / Claude Code PR before merge
- →You need an AI app monthly retainer with a rules file keeping the agent inside the guardrails
- →You are a non-engineer founder running one engineer plus AI tools and need a fractional CTO-equivalent
- →You had one production incident too many with no one senior to call at 10pm
- →You are between full-time hires and need the bridge without $250k salary and equity
Don't pick this retainer if…
- →You need 24/7 on-call with pager rotations — we quote that separately as a Scale+ retainer
- →You need 80+ hours/month — we quote an expanded retainer ($5,999+) instead of stacking
- →You want a dev shop to own product roadmap (we own production, you own product)
- →You are pre-launch with no paying users — start with Finish My MVP instead
- →You want open-ended product strategy or sales help — that's not engineering hours
“The rules file was the unlock. Cursor stopped reinventing conventions and Claude Code stopped shipping the same three bugs. Weekly merge velocity doubled inside a month.”
Retainer engineers who run AI app monthly retainers
A retainer is ongoing access to the specialists you'd otherwise re-hire every month. Most retainers draw on these three.
- 40h
- Senior engineering / month
- 24h
- AI-PR review turnaround
- 4h
- Critical rescue SLA
- 30d
- Cancel notice
Related AI-app rescue services and retainer case studies
A senior engineer on tap. Rules file installed.
$3,499/mo. 40 hours. Priority rescue queue. Cancel any time with 30 days’ notice. Cheaper than one day of a full-time hire, every month.