crow_workspace_dir

Returns the absolute filesystem workspace path for a project space. Bots and agents call this before writing artifacts. Returns the storage prefix (MinIO key prefix) too.

ServerCrow
CategoryRead

How to control crow_workspace_dir ↓

WHAT IT DOES

What crow_workspace_dir does on Crow

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

THE RISK

Low Risk

Why crow_workspace_dir needs a policy

This is a lookup/query function that retrieves workspace path information. It has no side effects, cannot modify data, and does not execute code or commands. The low severity reflects that path information alone poses minimal risk, though confidence is high because the description clearly indicates read-only retrieval.

From the tool's definition Tool description states it 'Returns the absolute filesystem workspace path' and 'Returns the storage prefix'. The verb 'Returns' indicates data retrieval with no modifications.

Documented attack patterns abuse exactly the kind of access crow_workspace_dir gives an agent:

POLICY

How to control crow_workspace_dir

PolicyLayer is an MCP gateway — it sits between your AI agents and Crow, and nothing reaches the server without passing your rules. This is the rule we recommend for crow_workspace_dir:

policy.json

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

crow_workspace_dir is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register Crow — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
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FAQ

Questions about crow_workspace_dir

What does the crow_workspace_dir tool do? +

Returns the absolute filesystem workspace path for a project space. Bots and agents call this before writing artifacts. Returns the storage prefix (MinIO key prefix) too. It is categorised as a Read tool in the Crow MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on crow_workspace_dir? +

Register the Crow MCP server in PolicyLayer and add a rule for crow_workspace_dir: 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 Crow. Nothing to install.

What risk level is crow_workspace_dir? +

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

Can I rate-limit crow_workspace_dir? +

Yes. Add a rate_limit block to the crow_workspace_dir 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 crow_workspace_dir completely? +

Set action: deny in the PolicyLayer policy for crow_workspace_dir. 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 crow_workspace_dir? +

crow_workspace_dir is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Crow tool call.

Start from Crow, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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