Thursday, February 19, 2026

WebMCP API extends internet apps to AI brokers

World Extensive Internet Consortium (W3C) contributors together with Google and Microsoft have launched the WebMCP API, a JavaScript interface that enables internet functions to supply client-side “instruments” to AI brokers. The API would allow brokers to work together straight with internet pages and take part in collaborative workflows with human customers throughout the identical internet interface.

WebMCP is accessible for early preview at Google, stated Google’s Andre Cipriani Bandarra, developer relations engineer for Chrome and the net in a February 10 weblog submit. “WebMCP goals to supply an ordinary approach for exposing structured instruments, guaranteeing AI brokers can carry out actions in your website with elevated velocity, reliability, and precision,” Bandarra stated.

A draft neighborhood group report on WebMCP was revealed on February 12 by the W3C Internet Machine Studying Group Group. The WebMCP API is described within the report as a JavaScript interface that lets internet builders expose internet utility performance as “instruments,” which means JavaScript capabilities with pure language descriptions and structured schemas that may be invoked by brokers, browser’s brokers, and assistive applied sciences. Internet pages that use WebMCP could be considered as Mannequin Context Protocol (MCP) servers that implement instruments in client-side script as a substitute of on the again finish, enabling collaborative workflows the place customers and brokers work collectively throughout the identical internet interface, in response to the report. Editors of the report embrace Khusal Sagar and Dominic Farolino of Google and Brandon Walderman of Microsoft. The specification is neither a W3C commonplace nor on the W3C Requirements Monitor, the report says.

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