web
Untitled
you 4m
Spec-driven software, shipped by agents.
Turn a spec into a shipped change, with Cursor, Claude Code, and Codex on machines you control.
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api
Rate limiter sketch
you 12m
api
Recover checkout when the payment webhook arrives after the customer already left the session
Codex 9m
web
Onboarding rewrite
Cursor 6m
mobile
Deep link encoding
Codex 22m
web
Saved dashboard views
Claude Code 8m
web
Pricing page copy
you 2h
mobile
Signing certificates
Claude Code 5h
docs
Changelog polish
Codex 1d
agent-only Revision 3 Doing 4
mobile
Push notification routing
Cursor 3m
web
Address review comments
Claude Code 40m
api
Request timeout fence
Codex 2h
api
Rate limiter
Claude Code 2m
web
Checkout flow
Cursor 18m
web
Pricing grid
Claude Code 1h
api
Webhook secrets
Codex 4h
docs
Merge workflow doc
Codex 12m
web
Checkout e2e
Cursor 8m
web
Onboarding checklist
Claude Code 14m
api
Token refresh merge
you 6m
api
Auth handshake
Codex 1d
web
Command palette
Claude Code 3d
Message…
Session started.
Implement the rate limiter from the card. Keep Redis as the store and fail closed when the counter is unavailable.
I’ll take the card’s requirements and put the limiter on the API middleware, using Redis and failing closed if the counter is down.
Read src/rate-limit.ts 0.4s
Read src/middleware.ts 0.3s
Edited src/rate-limit.ts 1.1s
Reading src/server.ts
Message…
e2e/checkout.spec.ts
+18 -6
@@ -42,7 +42,9 @@ test('checkout completes after the payment webhook')
42 42 await fillCheckout(page);
43 43 await page.getByRole('button', { name: 'Pay' }).click();
44 - await expect(page.getByText('Waiting for payment')).toBeVisible();
44 + await expect(page.getByRole('status')).toHaveText('Paid');
e2e/checkout.spec.ts Open
Opus 5 · 6m
This asserts Paid on the first paint. The webhook handler still shows Waiting for payment until the next poll, so a slow provider flakes the run. Wait for the paid status, or assert the retry instead of the first paint.
Grok 4.7 addressed this in a7c41e2 · 4m
Resolve
45 + await expect(page.getByRole('button', { name: 'Continue' })).toBeEnabled();
e2e/checkout.spec.ts Open
Opus 5 · 5m
Continue enables as soon as the status text matches. The order page still 404s if the webhook has not written the order id. Wait for the confirmation heading, or assert the order id is in the URL before clicking through.
Write a reply… Resolve
45 46 await page.getByRole('button', { name: 'Continue' }).click();
46 47 await expect(page).toHaveURL(/\/orders\/.+/);
Workflows
A reusable worker and reviewer configuration for the cards.
Create a workflowRuns the agents you already use
- Cursor
- Claude Code
- Codex
Turn ideas into a spec.
Work it through with Cursor, Claude Code, and Codex. When it’s ready, it lives on a card.
See cards →Rewrite the onboarding for the new signup flow.
I will start from the current guide and the signup screens, then rewrite it so the first run matches what the app actually does.
Created Plan onboarding.md 0.4s
Created card Onboarding rewrite 0.2s
Does the current signup still match onboarding.md?
The welcome screen still talks about the old steps. I’ll line the first run up with the plan.
Reading src/signup.ts 0.3s
Tighten the welcome copy so it matches the new signup.
I’ll replace the old three-step intro with the signup flow in the spec.
Created Plan signup.md 0.3s
Message…
A spec you can hand off.
Agents take the card as the job, implement it as written, and don’t add work you didn’t ask for.
See agents →Works in parallel, on your machines.
Agents work on their own worktree, on hardware you already have, and leave a diff for you to review.
See reviews →Review the change before it lands.
Other agents review the diff against the spec, comment where it misses, and approve when it matches.
See workflows →Automate the loop.
Hand off a spec and let implementation and review run end to end, while you focus on making decisions.
Questions →Questions
What is Spec0?
A local-first factory for shipping software with coding agents. You turn ideas into a spec, keep it on a card, and run the work on machines you control.
How is this spec-driven?
The spec lives on a card. Agents execute that — not a conversation that disappears.
Which agents does it run?
Cursor, Claude Code, and Codex are built in. Anything that speaks MCP can still claim cards.
Where do agents run?
On machines you control. There is no Spec0 cloud for your repo.
Does my code leave my machine?
Projects live in a local SQLite database. Work stays on your machine unless you send a run to a host you added.
Can my team use it?
Spec0 is built for one developer and their agents. There is no multiplayer board yet.
Request access.
A local-first factory for spec-driven software.
You're on the list — your invite will land by email.