WebMCP (Draft Community Group Report, Web Machine Learning CG)

W3Cspecificationcontext entry

Verified 2026-10-13. Status as of 2026-10-13. All entries.

Seams: S3

Status

Draft Community Group Report, dated 9 October 2026 on the page read on 2026-10-13 (2026-09-30 on 2026-10-03), no numbered version; on 2026-10-08 PR #338, "Remove declarative API from spec", was merged (the specification now focuses on the imperative registerTool() API); the draft Agentic Web Working Group (WG) charter lists WebMCP as its normative deliverable.

Relevance

Draft: "The WebMCP API enables web applications to provide JavaScript-based tools to AI agents."; an editor wrote on 2026-09-25 that identity and delegation proposals "are beyond the scope of the simple WebMCP API".

Committed next

None declared in the sources read.

Sources

• https://webmachinelearning.github.io/webmcp/ normative text, read 2026-10-02 · archived
• https://github.com/webmachinelearning/webmcp/issues/257 participant or third party, read 2026-10-03 · archived
• https://github.com/webmachinelearning/webmcp/pull/338 official decision or commitment, read 2026-10-13 · archived
• https://github.com/WebKit/standards-positions/issues/670 participant or third party, read 2026-10-03 · archived

Overlaps

W3C Agentic Web Working Group (draft charter), IETF Web Bot Auth (webbotauth WG), KYAPay (Skyfire), Browser vendor positions on WebMCP (WebKit, Mozilla, Chrome, Edge)

Neighbours in the map

Solid lines: overlaps declared by one of the two entries. Dashed lines, coloured by seam: entries named by the same seam (S1 to S4) in the seams note. Every node is a link.

Evidence and coverage

Read

On 2026-10-13: the draft report page and the latest commits of the repository (to 2026-10-09), PR #338 and issues #65, #192 and #257.

Not read

Minutes pages, section 6.2 of the specification, items #165, #204, #255, #272, #273 and #312 in full.

Open proposals