# MCP Locker Adds WebMCP Support: Browser-Native Tools Through One Endpoint

URL: https://press.bz/@mcplocker/mcp-locker-adds-webmcp-support-browser-native-tools-through-one-endpoint
Company: MCP Locker
Date: Sep 3, 2026
Tag: Product

[MCP Locker press office](https://press.bz/@mcplocker)

## Summary

MCP Locker now aggregates WebMCP pages alongside traditional MCP servers, so a single private endpoint reaches both.

## Article

WebMCP is a proposed W3C web standard, incubated by the W3C Web Machine Learning Community Group with engineers from Google Chrome and Microsoft Edge. It lets a webpage expose its functionality as structured, AI-callable tools directly in the browser, using the page's existing session and origin-based security model rather than a separate server process.

The spec offers two ways to register tools. The declarative path adds toolname and tooldescription attributes to an existing HTML form, and the browser translates the form fields into a structured schema. The imperative path calls navigator.modelContext.registerTool() from JavaScript with a name, description, JSON Schema input, and an execute function. Tools can be registered and unregistered as the page state changes.

The difference from a traditional MCP server is where the tools live. A standard MCP server is a standalone process speaking JSON-RPC, with its own auth setup. WebMCP tools live in a browser tab, inherit the signed-in session the person already has, and talk over postMessage. The tradeoff is scope: WebMCP covers tools only, and headless autonomous use is out of scope because it depends on a user-present session. The spec is a Draft Community Group Report, not yet a W3C Standard, and shipped behind a flag in Chrome 146 Canary.

MCP Locker now treats a WebMCP page as another entry in the locker. Add the page URL, and the locker connects, discovers the registered tools, and caches the list the same way it does for any MCP server. An agent hitting your endpoint sees those tools alongside the rest through the same search, execute, and refresh surface. The page's browser session stays with the page; the locker holds the connection and forwards calls on demand.

The endpoint still speaks protocol revision 2026-07-28 over Streamable HTTP, stateless, so 2025-era agents keep connecting. WebMCP pages join traditional servers and skills behind the one private address.

WebMCP support is live now for all plans at mcplocker.com.

About MCP Locker: MCP Locker is a private, web-hosted locker for MCP servers and skills. One endpoint, one token, every agent. Learn more at mcplocker.com.

## Press releases

### [One Link for Every MCP Server and Skill: MCP Locker Ends the Scattered Agent Stack](https://press.bz/@mcplocker/one-link-for-every-mcp-server-and-skill-mcp-locker-ends-the-scattered-agent-stac)
- Date: Sep 5, 2026
- Tag: Product
- Summary: MCP servers live in one agent's config, skills live in another's, and the third tool you use has neither. MCP Locker replaces all of that with one private link.

### [MCP Locker Teams: One Shared Locker of MCP Servers and Skills, Every Member Their Own Endpoint](https://press.bz/@mcplocker/mcp-locker-teams-one-shared-locker-of-mcp-servers-and-skills-every-member-their-)
- Date: Sep 4, 2026
- Tag: Product
- Summary: MCP Locker Teams lets a whole group share one locker of MCP servers and SKILL files, including OAuth-protected ones, while each person keeps a private endpoint of their own.

### [MCP Locker Launches: One Private Endpoint for Every MCP Server and Skill](https://press.bz/@mcplocker/mcp-locker-launches-one-private-endpoint-for-every-mcp-server-and-skill)
- Date: Aug 29, 2026
- Tag: Product
- Summary: MCP Locker is live, giving every agent a single private address that reaches all of your MCP servers and skills.

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