Run an MCP server for your browser
MCP gave models a way to call tools. The browser is the right host. This post is how you write your own tool, register it, and use it from the side panel in under an hour.
MCP gave models a way to call tools. The browser is the right host. This post is how you write your own tool, register it, and use it from the side panel in under an hour.
Most agentic browser demos stop at the summary. The interesting work starts after the summary, when the agent has to do something with what it just read.
Tool calling is not a feature. It is a contract. This is the long version of how we honor that contract inside Maho’s side panel.
MCP gave language models a way to call tools. The browser is the right host for the result. This post is the long version of that claim.
MCP turns the model into a caller and the browser into a host. The shift is small in a diagram and large in practice.