AgentOne Docs
Custom Extensions

Connect AgentOne to fast-filesystem-mcp

Detailed guide on how to connect AgentOne to the fast-filesystem-mcp MCP server.

fast-filesystem-mcp is a performant, feature-rich MCP server that gives AI agents access to filesystems on your device. You can use fast-filesystem-mcp with AgentOne by adding it as a custom extension. Follow the directions below.

Open AgentOne

If you haven't downloaded AgentOne yet, please check the Installation Guide.

First click Settings in the bottom right of the sidebar. If the sidebar is not expanded, click the "Open Sidebar" button in the top left of the app.

Screenshot showing the settings button in the bottom right of the sidebar

Next, click Extensions in the settings sidebar, then choose the Custom tab. If you don't see the settings sidebar, click the list icon in the top right.

Screenshot showing the custom extensions section

Add the fast-filesystem-mcp MCP Server

Click the Add Custom button, then fill in the details for the fast-filesystem-mcp server.

  • Type: STDIO (Local).
  • Name: Fast Filesystem.
  • Command: npx -y fast-filesystem-mcp@latest.

Screenshot showing MCP server details filled out

Leave other settings unchanged. Click the Add Custom button at the bottom of the dialog to complete the installation.

Screenshot showing custom MCP servers list with fast filesystem MCP on the list

That's it!

You've now added the fast-filesystem-mcp MCP server. Ask AgentOne to find and edit files on your computer.

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