Your agency is doing free work right now. I built a tool that catches it before you do.
For the last few months I've been building MarginFlow — solo, no team, no funding.
The problem: every agency owner knows this pattern. A client emails "hey can you also just add X" — sounds small, feels rude to push back on, so you just do it. One email. Then five. Then your 40-hour project quietly became 65 hours and nobody billed for the extra 25. By the time you notice, the project's wrapped and it's too late to invoice for it.
What MarginFlow does:
- Connects to Gmail (read-only — it never sends anything on your behalf)
- Reads your signed contract (PDF/Word/text) to understand what's actually in scope
- Watches incoming client emails and flags anything that's outside the agreed deliverables — with evidence, not guesswork
- Auto-drafts a change-order email so you don't have to have the awkward "that's extra" conversation from scratch
Why I built it: I do freelance/contract dev work myself, and scope creep is the single biggest silent margin killer in service businesses — worse than late payments, because you don't even realize it's happening.
Stack: Next.js, Prisma + Neon Postgres, Clerk, Gmail API, multi-provider LLM fallback chain for the scope-comparison engine, deployed on Vercel.
Launching Monday. Would genuinely love feedback from anyone who runs an agency, freelances, or has ever eaten a scope-creep loss — does this match how it actually plays out for you, or am I missing something?
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