Revert "[WebMCP] Expose RegisteredTool.inputSchema as an object" - #62111
Merged
Conversation
This reverts commit ec5ace9a94e9b4610a8f0ed1b9548ced902c6315. Reason for revert: A packaging update failure with the "WebMCP - Model Context Tool Inspector" extension is currently blocking Chrome Canary users from interacting with WebMCP tools. Reverting this change temporarily to unblock users during my upcoming OOO; the CL will be relanded once the extension update is published. Original change's description: > [WebMCP] Expose RegisteredTool.inputSchema as an object > > This CL updates the WebIDL definition for RegisteredTool.inputSchema > from DOMString to object to align with the WebMCP specification: > webmachinelearning/webmcp#241 > > In Blink, JSONStringToScriptObject() is used in > ModelContext::OnGetScriptToolsCompleted() to parse the mojo string > into a ScriptObject when constructing the RegisteredTool results. > > Web platform tests in external/wpt/webmcp/imperative/ are updated to > expect inputSchema as a JavaScript object rather than a serialized > JSON string. > > Bug: 489045948 > Change-Id: I7a28b36d725c85e24726708aecee4cd9f3cbb476 > Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8248081 > Reviewed-by: Dominic Farolino <dom@chromium.org> > Commit-Queue: Fr <beaufort.francois@gmail.com> > Cr-Commit-Position: refs/heads/main@{#1682945} Bug: 489045948 No-Presubmit: true No-Tree-Checks: true No-Try: true Change-Id: Id3fbbf9e22d902cc9341bd14fae78927582e1cfe Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8276309 Reviewed-by: Dominic Farolino <dom@chromium.org> Commit-Queue: Fr <beaufort.francois@gmail.com> Cr-Commit-Position: refs/heads/main@{#1683806}
wpt-pr-bot
approved these changes
Aug 21, 2026
wpt-pr-bot
left a comment
Collaborator
There was a problem hiding this comment.
The review process for this patch is being conducted in the Chromium project.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
This reverts commit ec5ace9a94e9b4610a8f0ed1b9548ced902c6315.
Reason for revert: A packaging update failure with the "WebMCP - Model Context Tool Inspector" extension is currently blocking Chrome Canary users from interacting with WebMCP tools. Reverting this change temporarily to unblock users during my upcoming OOO; the CL will be relanded once the extension update is published.
Original change's description:
Bug: 489045948
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Id3fbbf9e22d902cc9341bd14fae78927582e1cfe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/8276309
Reviewed-by: Dominic Farolino <dom@chromium.org>
Commit-Queue: Fr <beaufort.francois@gmail.com>
Cr-Commit-Position: refs/heads/main@{#1683806}