What is processed
After you opt in, Claimlight sends a completed sentence, an optional small amount of surrounding context, a pseudonymous installation identifier, client version, and network information needed for security and rate limiting. It does not read unrelated page content, private messages, passwords, or account cookies.
Who processes it
Claimlight uses Vercel for hosting and for Vercel AI Gateway, Neon for encrypted database storage, and Upstash for short-lived rate limits. AI Gateway routes classification, evidence research, and rewrites to Anthropic (Claude), with OpenAI as a fallback when Anthropic is unavailable. Evidence research sends search queries derived from the claim to Perplexity's web search through AI Gateway. These providers receive the sentence or claim that needs analysis, not your wider draft or account.
Retention and deletion
Claimlight encrypts active draft text at rest and deletes an active check no later than 24 hours after creation. Canceling a check deletes its Claimlight record immediately and requests cancellation and deletion from the provider where supported. De-identified operational and feedback records expire within 30 days; aggregate metrics contain no draft or evidence text.
AI Gateway does not store prompt or response content. Anthropic, OpenAI, and Perplexity process requests under their API terms, which may include limited retention of request logs for abuse monitoring.
Your control
Claimlight never publishes, rewrites, or inserts a citation without your explicit action. You can disable Claimlight globally or by supported site, mark a sentence as opinion, cancel a check, or use the extension's deletion control to remove both the local credential and its associated Claimlight API records. Claimlight API data is not used to train models, and Claimlight does not sell personal information.
Chrome Limited Use
Claimlight's use and transfer of information received from Google APIs and Chrome extension surfaces complies with the Chrome Web Store User Data Policy, including its Limited Use requirements. Data is used only to provide and secure the user-facing evidence-checking feature.
Security and changes
Claimlight uses short-lived sessions, encrypted transport, encrypted draft storage, request limits, strict source validation, and minimum browser permissions. No system is perfectly secure. Material changes to this notice will update the effective date and release notes before they take effect.
Questions and deletion requests
Use the Claimlight support page for troubleshooting, correction appeals, and the Chrome Web Store support channel. Do not include private draft text in a support request.