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# Have I Been Pwned: 4 WebMCP tools for AI agents

![](https://www.google.com/s2/favicons?domain=haveibeenpwned.com&sz=96)

Developer tools · haveibeenpwned.com

## Have I Been Pwned

Data breach search and alert service. Agents can check an email or password against breaches and open breach details.

[Open haveibeenpwned.com](https://haveibeenpwned.com/)

## Ask an agent to

-   Check if my email appears in any known data breaches
-   Check whether this password has been exposed in a breach
-   Show what data was leaked in the LinkedIn breach

## 4 tools

When we loaded haveibeenpwned.com again on Oct 24, 2026, it registered these through `navigator.modelContext` or `provideContext()`, from earlier WebMCP drafts. Chrome 154 only offers `document.modelContext`, so Chrome’s own agent support does not see them.

-   `check-password-pwned`read-only
    
    Check if a password has been exposed in a known data breach using the k-anonymity Pwned Passwords API. The password is hashed with SHA-1 in the browser; only the first 5 characters of the hash are sent to the API.…
    
    password: string
    
-   `navigate-to-section`read-only
    
    Navigate to a section of the Have I Been Pwned website.
    
    section: string
    
-   `search-breaches-for-email`read-only
    
    Search Have I Been Pwned for data breaches linked to an email address. If the breach search form is present on the current page it is pre-filled and the search is initiated; otherwise navigates to the home page with…
    
    email: string
    
-   `view-breach-details`read-only
    
    Navigate to the detail page for a specific data breach to learn what data was compromised, how many addresses were affected, and what happened.
    
    name: string
    

Tools

4

Registered with

JavaScript

Older API

navigator.modelContext

Tranco rank

#6,480

Scan finished

Oct 19, 2026

Tool names and descriptions are what haveibeenpwned.com/ registered when we loaded it in Chrome 154 on Browser Use Cloud. The summary and the “ask an agent” lines are AI-written from them. To call the tools yourself, see [Chrome’s WebMCP docs](https://developer.chrome.com/docs/ai/webmcp). [How we found it](https://browser-use.com/webmcp#method).

## More developer tools sites

-   [![](https://www.google.com/s2/favicons?domain=cloudflare.com&sz=64)Cloudflare2 tools · cloudflare.com](https://browser-use.com/webmcp/cloudflare.com)
-   [![](https://www.google.com/s2/favicons?domain=sentry.io&sz=64)Sentry4 tools · sentry.io](https://browser-use.com/webmcp/sentry.io)
-   [![](https://www.google.com/s2/favicons?domain=hostinger.com&sz=64)Hostinger2 tools · hostinger.com](https://browser-use.com/webmcp/hostinger.com)
-   [![](https://www.google.com/s2/favicons?domain=posthog.com&sz=64)PostHog8 tools · posthog.com](https://browser-use.com/webmcp/posthog.com)
-   [![](https://www.google.com/s2/favicons?domain=vercel.com&sz=64)Vercel5 tools · vercel.com](https://browser-use.com/webmcp/vercel.com)
-   [![](https://www.google.com/s2/favicons?domain=elementor.com&sz=64)Elementor8 tools · elementor.com](https://browser-use.com/webmcp/elementor.com)

[All 1,393 developer tools sites →](https://browser-use.com/webmcp/developer-tools)