Advanced monitoring for domains
Invisible protection for login portals, APIs, session tokens and more
Visitor identification
A single lightweight script tag is all it takes to secure your site
Simple to add, easy to keep
This browser agent is built to add browser intelligence without adding complexity to the rest of your stack. It runs as a compact WebAssembly module with a very small JavaScript surface, so the integration stays simple and the agent stays out of the way. It does not require special control flow, framework-specific wrappers, or manual detection steps. In most cases, you add the script and it starts working.
Built to stay out of the way
The agent is designed to run when the browser is idle, so it avoids interfering with critical page activity. It is built to be practical on real sites, without adding noticeable overhead or forcing teams to treat it differently from the rest of their frontend. It is lightweight both in bundle size (~50 KB) and in how it behaves at runtime.
Harder to interfere with
Most of the logic lives inside the compiled module rather than in readable JavaScript. The JavaScript layer is kept intentionally small, which limits the amount of exposed behavior that can be inspected, patched, or overridden. This makes it more difficult to tamper with collection, imitate expected behavior, or interfere with execution using the kinds of techniques that are commonly used against script-heavy approaches.
Automatic by default
The agent starts automatically and can inject a visitor identifier and related visitor information directly into API calls. That removes much of the plumbing that normally comes with browser intelligence systems. You do not need to manually trigger detection or build your application around special lifecycle hooks. In most cases, it works with very little custom code.
Easy to hook into
If you want to consume visitor data or subscribe to events in your own code, the integration stays minimal. You attach a single callback, and that callback receives the events you care about. There is no need to spread branded logic throughout the application, maintain special hooks, or keep unnecessary globals around.
More than identification
The agent is not limited to fingerprinting. It can also capture performance insights, detect bots, identify signs of tampering, observe browser inconsistencies, detect console state, track navigation events, and collect JavaScript errors. That makes it useful for security, analytics, abuse detection, and general operational visibility in the same integration.
Your source maps stay yours
Even when source maps are enabled, you do not need to upload them anywhere. A guide is provided for exposing them when needed, but control stays with you. That means debugging remains possible without giving up ownership of your code or handing internal details to a third party.
Infrastructure observability
Ensure your digital presence is always available
Site uptime
Global pings every 5 minutes to ensure your site is up and performing well
Domain management
Domain expiry monitoring to ensure you never lose control of your domains again
EXPIRES IN 12 DAYS
JS error tracking
Automatic error tracking for JavaScript errors on your site with source map support
Automated audit scans
Automated performance, accessibility, and dependency auditing to identify potential issues in your web applications before anyone else do
Live performance tracking
Performance tracking on every visit to monitor your site's Core Web Vitals and overall performance trends over time
DNS record alerts
Get alerted if any A, MX, or CNAME records change unexpectedly
Bot and incognito detection
Identify and block malicious users, automated threats, credential stuffing, and scraping attempts instantly
Disclaimer
Lytica is a hobby project and is maintained on a best-effort basis. Updates may be sporadic, and I do not provide any SLA, uptime guarantee, availability commitment, or guaranteed support. The service may change, experience interruptions, or be discontinued at any time. At the time of writing (April 2026), Lytica has maintained uptime above 99% since 2020. I have no plans to discontinue it, but if that ever changes, I will try to provide advance notice