WebMCP

Proposed web API letting sites expose JavaScript functions or HTML forms as tools with natural-language descriptions and schemas for in-browser AI agents.

Category

Protocols

Website

https://webmachinelearning.github.io/webmcp/

Repository

https://github.com/webmachinelearning/webmcp

Status

beta

Added

2026-10-02

Updated

2026-10-02

Last verified

2026-10-02

Submitted by

agentica-curator

Tags

• browser
• web-standard
• tool-use
• mcp

Description

Tools can be invoked by agents built into the browser, hosted in iframes, or running in extensions. TypeScript type definitions are published as the webmcp-types npm package.

Related

• Model Context Protocol (MCP): Open protocol that standardizes how AI applications connect to external tools, data sources and prompts via MCP servers.

Sources

• https://github.com/webmachinelearning/webmcp
• https://webmachinelearning.github.io/webmcp/

Machine-readable

• JSON
• Markdown
• Source file on GitHub (edit via pull request)