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


99%

Site uptime

Global pings every 5 minutes to ensure your site is up and performing well

Alert

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

Alert

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