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# Knock: 4 WebMCP tools for AI agents

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

Developer tools · knock.app

## Knock

Customer messaging and notification infrastructure. Agents can search site pages, navigate, subscribe to the newsletter and open sales contact.

[Open knock.app](https://knock.app/)

## Ask an agent to

-   Find Knock's pages about in-app notifications
-   Subscribe me to the Knock newsletter
-   Open Knock's contact sales page

## 4 tools

When we loaded knock.app 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.

-   `navigate_to_page`
    
    Navigate the current browser tab to a page on the Knock marketing site. Only known internal paths are accepted. Use \`search\_pages\` first to discover valid paths.
    
    path: string
    
-   `open_contact_sales`
    
    Navigate to the Knock contact sales page so the user can talk to the sales team. This does not submit the form.
    
-   `search_pages`read-only
    
    Search the Knock marketing site for pages matching a free-text query. Returns matching pages with their path, title, and description. Use this to help a user find the right page before navigating.
    
    query: string, limit: integer?
    
-   `subscribe_to_newsletter`
    
    Subscribe an email address to the Knock newsletter. The email is added to the 'newsletter-subscribers' audience. Ask the user for confirmation before calling this tool.
    
    email: string
    

Tools

4

Registered with

JavaScript

Older API

navigator.modelContext

Tranco rank

#12,408

Scan finished

Oct 19, 2026

Tool names and descriptions are what knock.app/ 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)