write_file — Filesystem MCP Tool Mutating

write_file (write file) is one of 11 tools on the Filesystem MCP server. Connect the server and your client discovers it on the handshake.

by client

How to call write_file from your client

Claude Code Filesystem write_file run in your project directory
Claude Desktop Filesystem write_file ~/Library/Application Support/Claude/claude_desktop_config.json
Cursor Filesystem write_file ~/.cursor/mcp.json
VS Code Filesystem write_file .vscode/mcp.json
Zed Filesystem write_file ~/.config/zed/settings.json
Windsurf Filesystem write_file ~/.codeium/windsurf/mcp_config.json

Fastest route

claude mcp add server-filesystem -- npx -y @modelcontextprotocol/server-filesystem

Other tools on this server

read_file
read_multiple_files
edit_file
create_directory
list_directory
directory_tree
move_file
search_files
get_file_info
list_allowed_directories

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. The registry stores tool names only; connect the server for its live schemas.

Filesystem MCP server