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StateProof
Deterministic frontend edge-state validation in Chromium
Stateproof forces loading, empty, error, and offline states at the browser wire via CDP with zero app code tampering. Includes a native MCP server for AI coding agents (Cursor, Claude) with self-healing DOM selector suggestions and PR proof cards.
Hey Product Hunt community! 👋 I'm super excited to share **Stateproof** with you today.
### The Genesis Story: Why We Built Stateproof
Over the last few month, like many of you, our team shifted to building with AI coding assistants (Cursor, Claude Code, Windsurf). While AI can generate an entire UI dashboard in 30 seconds, we noticed a painful pattern across our pull requests:
**The happy path works, but the edge states are constantly broken:**
- Loading skeletons flicker or hang indefinitely on slow connections.
- Empty zero-states render a blank white page instead of helpful illustrations.
- Server error boundaries fail to display or hide the retry button below mobile viewports.
- Offline drops crash client-side transitions.
Writing 50 lines of Playwright or Cypress route-mocking for every single micro-state felt sluggish. Mocking at the application level (MSW) meant polluting our source code with service workers and test boilerplate that risked leaking into production.
### How Stateproof Solves This: Wire-Level Proof
We built Stateproof to validate UI edge states directly at the **browser wire layer via Chrome DevTools Protocol (CDP)**:
1. **Zero App Tampering**: 0 service workers, 0 source code mocks, 0 build config changes. If your dev server runs on localhost, Stateproof can test it.
2. **The 4 Canonical States**: Tests **Loading** (request delay), **Empty** (instant JSON fixtures), **Error + Recovery** (HTTP 500 → click retry → recover), and **Offline** (`internetdisconnected` abort) in milliseconds.
3. **Native MCP Server for AI Coding Agents**: Stateproof exposes first-party MCP tools (`@stateproof-dev/mcp-server`) with self-healing selector suggestions (`suggest`). When a selector fails, your agent inspects the live DOM and fixes the code in 1 turn—saving 3–5x tokens.
4. **Visual PR Proof Cards**: Generates deterministic Markdown tables and 100% offline HTML reports for your PR descriptions.
### Experience It in 10 Seconds (Zero Setup Required)
You don't need to configure anything to try it right now. Just run:
```bash
npx @stateproof-dev/cli demo
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About StateProof on Product Hunt
“Deterministic frontend edge-state validation in Chromium”
StateProof was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #157 on the daily leaderboard. Stateproof forces loading, empty, error, and offline states at the browser wire via CDP with zero app code tampering. Includes a native MCP server for AI coding agents (Cursor, Claude) with self-healing DOM selector suggestions and PR proof cards.
StateProof was featured in Design Tools (262.4k followers), Developer Tools (519k followers), Artificial Intelligence (478.1k followers) and GitHub (41.4k followers) on Product Hunt. Together, these topics include over 274.3k products, making this a competitive space to launch in.
Who hunted StateProof?
StateProof was hunted by warm syntax. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how StateProof stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
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