// SCAN REPORT

Filesystem

14 tools. 4 can modify or destroy data without limits.

4 write tools that can modify data. Rate limits recommended.

Last updated:

4 can modify or destroy data
10 read-only
14 tools total
// TOOL MAP
Read (10) Write / Execute (4) Destructive / Financial (0)
// WHAT CAN GO WRONG
✕

Write operations (create_directory, edit_file, move_file) modify state. Without rate limits, an agent can make hundreds of changes in seconds — faster than any human can review or revert.

One command. Full control.

Intercept sits between your agent and Filesystem. Every tool call checked against your policy before it executes — so your agent can do its job without breaking things.

npx -y @policylayer/intercept scan -- npx -y @modelcontextprotocol/server-filesystem
Scans every tool. Generates a policy. Starts enforcing.
Works with Claude Code · Cursor · Claude Desktop · Windsurf · any MCP client
// RECOMMENDED RULES
Rate limit write operations
create_directory:
  rules:
    - rate_limit: 30/hour

Prevents bulk unintended modifications from agents caught in loops.

Cap read operations
directory_tree:
  rules:
    - rate_limit: 60/minute

Controls API costs and prevents retry loops from exhausting upstream rate limits.

// ALL 14 FILESYSTEM TOOLS
WRITE 4 tools
Write create_directory Write edit_file Write move_file Write write_file
READ 10 tools
Read directory_tree Read get_file_info Read list_allowed_directories Read list_directory Read list_directory_with_sizes Read read_file Read read_media_file Read read_multiple_files Read read_text_file Read search_files
// FAQ
How do I prevent bulk modifications through Filesystem? +

The Filesystem server has 4 write tools including create_directory, edit_file, move_file. Set rate limits in your policy file -- for example, rate_limit: 10/hour prevents an agent from making more than 10 modifications per hour. Intercept enforces this at the transport layer.

How many tools does the Filesystem MCP server expose? +

14 tools across 2 categories: Read, Write. 10 are read-only. 4 can modify, create, or delete data.

How do I add Intercept to my Filesystem setup? +

One line change. Instead of running the Filesystem server directly, prefix it with Intercept: intercept -c filesystem.yaml -- npx -y @@modelcontextprotocol/server-filesystem. Download a pre-built policy from policylayer.com/policies/filesystem and adjust the limits to match your use case.

policylayer/intercept

Control every MCP tool call
your agent makes.

Set budgets, approvals, and hard limits across MCP servers.

npx -y @policylayer/intercept init
Protect your agent in 30 seconds. Scans your MCP config and generates enforcement policies for every server.
// GET IN TOUCH

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