Filesystem MCP Server
by gomcpgo
The Filesystem MCP Server is a secure Model Context Protocol (MCP) server that provides controlled filesystem operations. It allows access to specified directories with permission validation and path traversal prevention.
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What is Filesystem MCP Server?
The Filesystem MCP Server is a secure server that exposes filesystem operations through the Model Context Protocol (MCP). It restricts access to a pre-defined set of directories, ensuring that only authorized file operations can be performed.
How to use Filesystem MCP Server?
- Install the server using
go get github.com/gomcpgo/filesys. 2. Configure allowed directories using theMCP_ALLOWED_DIRSenvironment variable (e.g.,export MCP_ALLOWED_DIRS="/path1,/path2"). 3. Build the server usinggo build -o bin/filesys cmd/main.go. 4. Integrate the server into a client application (e.g., Claude Desktop) by adding its configuration to the client's configuration file, specifying the command to execute the server and the necessary environment variables. 5. Use the provided tools (read_file, write_file, etc.) by sending appropriately formatted JSON requests to the server.
Key features of Filesystem MCP Server
Directory access control via environment variables
File operations restricted to allowed directories
Thread-safe caching of allowed directories
Proper handling of paths with spaces
Use cases of Filesystem MCP Server
Securely accessing files from a remote application
Providing controlled file access to AI models
Implementing a sandboxed file system environment
Enabling file management operations in a secure and auditable manner
FAQ from Filesystem MCP Server
How do I specify allowed directories?
How do I specify allowed directories?
Use the MCP_ALLOWED_DIRS environment variable, providing a comma-separated list of directory paths.
What happens if I try to access a file outside the allowed directories?
What happens if I try to access a file outside the allowed directories?
The server will deny the operation and return an error.
How do I build the server?
How do I build the server?
Use the command go build -o bin/filesys cmd/main.go.
What file operations are supported?
What file operations are supported?
The server supports reading, writing, creating, moving, listing, and searching files and directories.
Is the server thread-safe?
Is the server thread-safe?
Yes, the server uses thread-safe caching of allowed directories to ensure concurrent access is handled correctly.