Pricing

Our multi-layer approach combining 41 browser signals with edge network analysis (JA4/TLS, RTT, ASN, HTTP fingerprints) achieves 99%+ accuracy. Unlike client-only solutions, those edge checks cannot be spoofed by browser extensions.

Identify is a browser SDK that fingerprints visitors on the client side. Sentinel is server middleware that classifies API callers (browser vs. bot vs. AI agent vs. CLI tool) using TLS and header analysis. Pulse is a lightweight analytics library for CLI tools that tracks command usage without collecting PII. They're independent products — use one or all three.

Yes, permanently. 25,000 identifications per month, all 41 browser signals included, no credit card required. Sentinel and Pulse are included in every plan.

FingerprintJS open-source is client-only (~60% accuracy). Their Pro product starts at $100/month. We combine 41 browser signals with proprietary edge network analysis at a fraction of the price. We also offer API caller classification (Sentinel) and CLI analytics (Pulse), which FingerprintJS doesn't have.

Sentinel classifies requests into seven categories: BROWSER_HUMAN, BROWSER_AUTOMATED, AI_AGENT, CLI_TOOL, SDK_CLIENT, BOT_SCRAPER, and UNKNOWN. Each classification includes a confidence score and TLS fingerprint details.

No. We never store IP addresses, email addresses, or any personally identifiable information. Visitor IDs are derived from device signals only. Pulse for CLI tools also collects zero PII — it fingerprints machines, not people.

Yes. If a user has DO_NOT_TRACK set or is running in a CI environment, Pulse automatically skips telemetry. No configuration needed.

Each product is a separate npm package. Identify: import the SDK and call identify(). Sentinel: add middleware to your Hono app. Pulse: initialize with your tool name and call track() per command. Full TypeScript support across all three.