MCP Server Filesystem is completely free with 6 features included. No paid tiers offered, making it perfect for budget-conscious users.
Specify allowed directories as command-line arguments when starting the server: 'mcp-server-filesystem /path/to/dir1 /path/to/dir2'. If your MCP client supports Roots, it can dynamically update allowed directories at runtime without restarting.
Any MCP-compliant client, including Claude Desktop, Cody, and custom implementations. Clients that support the Roots protocol get the additional benefit of dynamic directory access control.
If the server starts without command-line arguments AND the connecting client doesn't support Roots (or provides empty roots), the server will throw an error during initialization. At least one access method must provide allowed directories.
Yes. The server supports both text and binary file operations with proper encoding handling. Binary files are transferred as base64-encoded content.
No. This is the official reference implementation from the modelcontextprotocol organization. The mark3labs version is a separate community implementation. The official version is recommended for production use.
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Last verified March 2026