delete_project_file

THE RISK

Critical Risk

Why delete_project_file needs a policy

This tool irreversibly removes data (project files) and cannot be undone. Deletion operations fall squarely into the Destructive category. The severity is high because an AI agent with misguided instructions could delete critical project files, causing loss of work and project damage. Confidence is very high due to the explicit use of 'delete' in both name and description.

From the tool's definition Tool name is 'delete_project_file' and description states it 'Deletes a named file from the project'. The verb 'Deletes' is explicit and unambiguous.

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

POLICY

How to control delete_project_file

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

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_project_file"
  ]
}

delete_project_file disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

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

RESTRICT THIS TOOL →

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EXPLORE

Related tools and policies

More Task Trellis MCP tools

Destructive delete_issue Deletes an issue from the task trellis system Use this tool to permanently remove issues Destructive remove_attachment Deletes a named file from the managed attachments folder for a Trellis issue. Errors if t Write add_attachment Copies a file into the managed attachments folder for a Trellis issue. Errors if the issu Write append_issue_log Appends content to an issue Write append_modified_files Appends modified files information to a trellis issue in the task trellis system Use this Write claim_task Claims a task in the task trellis system Use this tool to assign yourself to available ta Write create_issue Creates a new issue in the task trellis system Use this tool to create new issues such as Write update_issue Updates an existing issue in the task trellis system Use this tool to modify properties o

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Go deeper

Critical-risk tools in Task Trellis MCP → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about delete_project_file

What does the delete_project_file tool do? +

Deletes a named file from the project. It is categorised as a Destructive tool in the Task Trellis MCP MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_project_file? +

Register the Task Trellis MCP server in PolicyLayer and add a rule for delete_project_file: 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 Task Trellis MCP. Nothing to install.

What risk level is delete_project_file? +

delete_project_file is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_project_file? +

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

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

delete_project_file is provided by the Task Trellis MCP server (langadventurellc/task-trellis-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Task Trellis MCP tool call.

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

CHECK YOUR STACK →