Chrome Extension · Live
TheOmnipresentContextGuardian.
Save AI context, monitor Claude token limits in real time, and upgrade raw prompts into expert-grade instructions, all without leaving your browser.
Losing context between AI sessions kills flow. Getting blindsided by usage limits wastes hours. Sentry fixes both, natively in your browser.
Trusted by builders in 60+ countries
Capabilities
Everything you need, nothing you don't.
Three tightly-scoped features that work quietly in the background of every Claude session.
Sentry Memory
Cross-session context saving means you never re-explain your stack. Sentry pulls your preserved knowledge base into the chat exactly when it's needed, no copy-paste, no re-priming.
Token Monitor
Real-time pacing gauges for Claude limits. Never get hit by unexpected rate limits mid-deep-work again.
Prompt Upgrade
Turn raw brain-dumps into expert-grade prompts instantly, before they ever reach the model.
Local & Private
Sentry executes only within your active Claude tab. No telemetry, no history reads, no intellectual property ever leaves your machine, verifiable in our privacy policy.
Sentry Memory
Cross-session context saving means you never have to re-explain your stack. Sentry automatically pulls your preserved knowledge base into the chat exactly when needed.
React 19 · Vite · Tailwind · Framer Motion
Functional components, named exports, 2-space indent
Xenriq: terminal-dark design system, OKLCH tokens
Token Monitor
Real-time pacing gauges for Claude limits. Never get hit by unexpected rate limits during deep work again. Visually guard your capacity.
Prompt Upgrade
Turn raw brain-dumps into expert-grade prompts instantly before sending them to the LLM. Your instructions become precise, structured, and effective.
Live in under a minute.
Add to Chrome
One click from the Chrome Web Store. No account, no configuration, no onboarding wizard.
Open Claude
Sentry wakes up automatically inside your active session and starts tracking context and tokens.
Just build
Type as usual. Sentry upgrades prompts, saves memory, and paces your usage, quietly in the background.
Free · Chrome Extension
Stop losing context.
Start shipping faster.
Join 25,000+ developers who let Sentry guard their prompts, tokens, and memory, without ever leaving the browser.
FAQ
Everything you need to know
About Promptive Sentry.