tree

Displays the dependency tree for a Rust project.

SERVERDocker SOURCE@paretools/docker

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-dave-london-docker/tree.md

WHAT IT DOES

What tree does on Docker

AI agents call tree to retrieve information from Docker without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why tree is rated Low

The tree tool performs only information retrieval of Rust project dependencies. It has no side effects, does not execute code, and does not modify project files. This is analogous to 'list' or 'get' operations, placing it firmly in the Read category with low severity.

From the tool's definition Tool description states it 'Displays the dependency tree' which is a read-only operation that retrieves and presents project metadata without modifying or executing code.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs tree safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Docker, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For tree, this is the rule to start with:

tree Allowed

tree is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "tree": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Docker, apply this rule, and every tree call is checked against it from then on.

FAQ

Questions about tree

What does the tree tool do? +

Displays the dependency tree for a Rust project. It is categorised as a Read tool in the Docker MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on tree? +

Register the Docker MCP server in PolicyLayer and add a rule for tree: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Docker. Nothing to install.

What risk level is tree? +

tree is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit tree? +

Yes. Add a rate_limit block to the tree rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block tree completely? +

Set action: deny in the PolicyLayer policy for tree. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides tree? +

tree is provided by the Docker MCP server (@paretools/docker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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