SpecBuilder turns a rough idea into structured, validated specs that Claude Code, Cursor, and Lovable actually understand. Then it watches your repo and flags the moment your code drifts from the plan.
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You've got Claude Code, Cursor, Lovable. Ridiculously powerful tools. But they build what you describe, and most of us describe things badly.
You type 'build me a SaaS app' and the AI fills in a hundred decisions you never made. Two days later you're untangling someone else's assumptions from your actual requirements.
Without a written spec, every AI session is a negotiation. You say 'just the MVP.' The agent adds auth, payments, an admin panel. Three days in you've built twice what you needed.
Your code drifts from the plan and nobody notices. A feature here, a shortcut there. By the time the architecture feels wrong, you're rewriting — not refactoring.
SpecBuilder makes you think before you build. That's the whole trick.
Most spec tools hand you a blank template and wish you luck. SpecBuilder asks hard questions, pokes holes in your assumptions, and only generates docs after you've actually thought it through.
Is this actually a problem people pay to solve? Who else does this? Why would someone pick you? SpecBuilder asks the questions you'd rather skip, then gives you a straight answer on whether the idea holds up.
Discovery · Validation · Positioning
Cut the scope to what matters, then generate the full spec. Requirements, architecture, data models, stories, and a ready-to-paste start prompt. Everything your AI coding agent needs to build with precision instead of guesses.
Scoping · Generation · Guidance
Hook up your GitHub or GitLab repo. SpecBuilder checks every push against your approved spec. The moment code starts diverging from the plan, you get flagged. Not three weeks later. That commit.
Monitoring · Alerts · Iteration
A full set of spec documents that work together. Change one, and the system flags everything downstream that needs updating. No more stale docs floating around your repo.
Update your requirements and instantly see which other docs are out of date. Architecture, data models, stories. They stay in sync or they tell you they're not.
Every doc is structured for Claude Code, Cursor, and Lovable. Drop them in your repo and your agent has the full picture — not a vague README and good intentions.
Every version saved automatically. Push to GitHub or GitLab, download everything, or copy what you need. Regenerate a doc and the previous version is still there.
Most projects drift silently. A feature here, a shortcut there. Weeks later you realize the codebase doesn't match the plan. SpecBuilder catches drift per-commit, not per-quarter.
Matches approved requirements. Ship it.
Not in the approved MVP. This was deferred to v2.
Alert sent to project owner
GitHub + GitLab · Webhook-based · Real-time
Every plan includes the full workflow and complete spec bundle.
One project, full workflow. See if it clicks.
Unlimited projects. Unlimited generations. Ship with confidence.
Takes about 10 minutes. You'll wonder why you ever let an AI agent loose on a project without one.
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