Lock the spec before your agent touches code

We’re building a simple hosted workspace for solo builders and vibe coders. Describe a feature in plain English, get locked Given/When/Then acceptance criteria, then export an agent-ready prompt pack and a regression checklist, so the next feature stops breaking the last one.

Password reset by emailLocked · v1

AC-1Given a registered user on the login page When they request a reset Then they get one email with a link valid for 30 minutes

AC-2Given an expired link When it is opened Then they see “link expired” and can request a new one

Out of scopeChanging the login page layout. Social login.

.cursor/rules/password-reset.mdcCLAUDE.md snippetAGENTS.mdPR checklist

Mock-up only. Illustrative example, not real output. SpecLock is not built yet.

Join the waitlist

We’re checking demand before we build. No spam: we’ll only email about SpecLock.

Email Which AI coding tools do you use? What breaks most often when your agent builds a feature? Would you pay ~$15–29/mo for this? Tell us about the last time it broke (optional)

Privacy: we store your email and answers only to gauge interest and contact you about SpecLock early access. We don’t sell or share them, and we’ll delete them if you reply to any of our emails asking us to. This site may use cookie-free, privacy-friendly Cloudflare Web Analytics.

How it would work

1. Say it in plain English

Type the feature the way you’d explain it to a friend. SpecLock drafts acceptance criteria, edge cases, and an explicit “don’t touch” list. You edit, then lock it.

2. Export for your agent

One click for a Cursor rule file, a CLAUDE.md / AGENTS.md snippet, and step-by-step prompts that build one criterion at a time. Works with whatever agent you already use.

3. Check before you merge

Every locked criterion joins a growing regression checklist for the project. Share a read-only link so a co-founder or client can approve “done” before anything gets built.

Why not just use…

Option	Honest take
GitHub Spec Kit	Great, free and open source. It runs in your repo through a CLI and agent commands. SpecLock is for people who want it in a browser in 3 minutes, with no setup.
Kiro	Has spec mode built in, but you have to switch to Kiro’s IDE. SpecLock exports to the tool you already use.
Notion / a doc	Fine for notes, but nothing is locked, no agent-ready exports, no regression checklist.

Planned pricing

Solo

$15 / month

Up to 3 projects, unlimited locked specs, all agent exports, regression checklist, share links.

Pro

$29 / month

Unlimited projects, version diffs, approvals and comments on share links, weekly digest.

Planned pricing, not charging yet. Waitlist only.