Community WebMCP registry
Make any site agent-ready with WebMCP Today.
Install or publish a package that gives your agent named tools on sites that have yet to adopt WebMCP.
Public beta. Supported Chromium runtime, WebMCP when required, unpacked extension.
- packages published
- 3
- tools available
- 16
Tools on this page
reddit.com
- read
reddit_subreddit_hot
List hot posts in a subreddit.
- read
reddit_search
Search posts using the site's own GraphQL API.
- write
reddit_comment
Post a comment or reply. Confirms before it writes.
● injected by webmcp.today · community package · pinned v1
01
Stop making the model hunt
A named tool tells the agent what it does, which inputs it needs, and what it returns. No selector archaeology, coordinate guessing, or replayed click script.
02
Read the tool interface first
Packages are data, not remote code. The page shows every tool's name, description, input schema, and execution endpoint binding before you install it.
03
Keep the version you approved
The extension stores one immutable version in your browser. A new publish cannot change what your agent can do until you choose to update.
First run
Make a live tool call from your MCP client
Load the extension in your existing supported Chromium browser, connect the local MCP bridge, then install the suggested Reddit package and call it. The path exposes six tools and returns live subreddit data when its final read-only check succeeds.
Step 1
Download and load the extension
Download the release ZIP, extract it, then load its folder in the browser's Developer mode.
Step 2
Connect the MCP server to your browser
Check the actual WebMCP runtime, install the native host on macOS, and connect the first-party MCP server to your existing browser.
Step 3
Install and call a package
Open Reddit, approve its suggested package, and call the read-only tool as soon as it appears. No webmcp.today account is required.
Trust model
Built around a trust model you can inspect
A package registers tools on pages you're signed into. You can inspect the source, package contents, version history, and API origin before installing it.
The source is public
The extension, this registry, the schema and the MCP server all live in one GitHub repo. What the extension does with a package is code you can read.
Packages are data, not code
A package is a JSON document. The package schema has no step that executes code, so installing one can't run arbitrary code in your page.
Updates require your approval
Your install is pinned to one version, and a published version is never edited. A bad update can't reach you until you choose to move the pin, and rolling back is moving the pin to an older version.
A call can’t leave the site
API mode is locked to the package's own origin, checked when it's published and again when it runs. Your session on one site stays there.
Go from no tools to a live result.
The quickstart gives you copyable setup commands and one prompt that walks you through the Reddit install, lists its tools, and calls one.
Hire me
Robert Niimi is a full-stack engineer and former founder with 10+ years of experience, exploring front-end and product engineering roles, based in NYC.