list_projects

THE RISK

Low Risk

Why list_projects needs a policy

This tool queries and returns a list of existing workflow projects without creating, modifying, deleting, or executing any operations. It is a straightforward read operation with minimal blast radius if misused by an AI agent, as it only exposes project metadata that is typically already accessible to authenticated users.

From the tool's definition Tool name 'list_projects' and description 'List all workflow projects' indicate a retrieval operation with no modification or execution of resources.

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

POLICY

How to control list_projects

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

policy.json

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

list_projects 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 Treasure Data MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

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.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about list_projects

What does the list_projects tool do? +

List all workflow projects. It is categorised as a Read tool in the Treasure Data MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_projects? +

Register the Treasure Data MCP Server MCP server in PolicyLayer and add a rule for list_projects: 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 Treasure Data MCP Server. Nothing to install.

What risk level is list_projects? +

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

Can I rate-limit list_projects? +

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

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

list_projects is provided by the Treasure Data MCP Server MCP server (treasure-data/td-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Treasure Data MCP Server tool call.

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

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