Question 1

What is Latch?

Accepted Answer

Latch is an open-source WebMCP layer at latch.tools—one script tag turns your site's search, cart, and forms into tools that AI browsers like Chrome 149 (origin trial) and Edge can call directly.

Question 2

What is WebMCP?

Accepted Answer

WebMCP applies the Model Context Protocol to websites: instead of agents simulating clicks, sites expose named actions with structured parameters that AI browsers invoke as tools.

Question 3

Is Latch free?

Accepted Answer

The core is free and open source; a Pro tier at €19/month adds analytics on how AI browsers use your site.

Question 4

Latch vs building my own MCP adapter?

Accepted Answer

A custom adapter is fully flexible but costs engineering cycles and maintenance. Latch trades some flexibility for a one-line install and maintained compatibility with browser WebMCP behavior.

Latch: WebMCP for Sites That Want to Be Agent-Friendly

Alternatives

GitHub Copilot

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Replit AI

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Codeium