A standard for agents on the web.

WebMCP lets websites expose structured tools to AI agents inside the browser, using the session and controls the user already has.

SigVelo founder Alex Nahas is actively involved in developing the emerging W3C standard. Learn more in Google’s WebMCP documentation and explore MCP-B, SigVelo’s open-source WebMCP tooling.

Use the browser session.

No separate service accounts or duplicate authentication layer.

Expose intentional actions.

Sites define reliable tools instead of forcing agents to scrape and click blindly.

Keep the user in control.

Browser permissions and approvals stay between the agent and consequential actions.