PROOF. Spec Lab Preview About Proof ↗

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Downloaded copies and records already held by AI providers are not deleted by this action. Non-content usage counters are retained separately.

From intent to testable behavior

Know what to test. And why.

Start with a feature specification. Resolve ambiguous rules, see the risks, and leave with a test plan your team can use.

One feature, its rules and its exceptions.0 / 12,000

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Private by default. Not used by Proof for AI training. Deleted after 30 days, or sooner when you delete the project.

Your specification, answers and generated review are sent to the configured AI provider. Leave out secrets. No repository access or application test execution is needed.

How your data is handled

Current model configuration: not yet available. Recorded request identities are included in the report.

Your specification, answers, generated requirements, test plan and project files expire after 30 days and are automatically cleaned up. Use “Delete project” to remove your project earlier. Draft and shared links stop working when the project is deleted. Existing projects keep the expiry shown beside their draft link. Download anything you want to keep.

We use your content to generate and review your plan. OpenRouter requests are restricted to model providers whose policies disallow training on inputs and outputs. This is separate from provider logging and retention; provider data policies apply.

A signed browser-access cookie expires 30 days after it is issued or renewed. It can renew while you use Spec Lab; renewal does not extend the project’s expiry. The draft URL restores your review. Clearing browser storage can prevent you from reopening the project.

Deleting removes the temporary Proof project, not downloaded copies or records already held by the AI providers. Non-content usage records, such as token counts and cost totals, are retained separately for billing, limits and abuse prevention. Provider retention is separate from Proof’s project expiry. Website privacy · Ask about data handling