Platform features are currently in invite-only beta. You can
sign up here if you want to be considered for one of our next
phases. The open foundation, meaning the CLI, the compiler and the standalone
generator, is not part of the beta and is available now.
WebMCP is a proposal at the W3C Web Machine Learning Community Group, in an origin trial in Chrome
and Edge. Whether it is available is your browser’s decision, not ours. Each app’s
Connect page says plainly whether this browser can use it.
What makes it different
There is no endpoint and no credential. The tools run inside the tab, through the same session you already have, so an assistant reaches exactly what you could reach by clicking and nothing at all when you sign out. Nothing you do this way leaves the browser except the ordinary API calls the app was going to make anyway. That is why it is on by default and why the tool set is not the same as the MCP one.The tools
The last two are the ones a browser can do and a server cannot. An assistant that can answer “where
do I see this” by putting it on screen is worth more here than another way to read rows.
There is no
delete_record. Deleting is irreversible and a misread sentence is a poor reason to
lose a record, so the browser tools navigate you to the record instead and let you decide.
What asks before it acts
Every write is marked consequential, which is the browser’s cue to confirm with you before running it. Every tool that returns record data is marked as carrying content the app’s own users wrote, so an agent treats it as data rather than as instructions. Results are kept small on purpose — ten records by default, twenty-five at most. An answer much over a page tends to be dropped by the agent rather than truncated, and a dropped answer looks like a tool that does not work.Turning it off
It is a workspace setting, like MCP: an administrator can switchwebmcp off and the app stops
registering anything. A browser that does not support WebMCP registers nothing either way, and the
application behaves exactly as it always has.
