plutio_list_custom_fields_bundles

THE RISK

Low Risk

Why plutio_list_custom_fields_bundles needs a policy

This is a read-only operation that retrieves metadata about custom field bundles. It has no side effects, does not execute code, does not create or modify data, and does not involve financial operations. The low severity reflects that listing bundles exposes only structural metadata with minimal blast radius if misused.

From the tool's definition Tool name contains 'list' and description states it 'List custom-fields bundles available'. The purpose is to retrieve/query available bundles for reference, with no modification or deletion of data.

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

POLICY

How to control plutio_list_custom_fields_bundles

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

policy.json

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

plutio_list_custom_fields_bundles 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 Plutio — 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

Related tools and policies

More Plutio tools

Write plutio_apply_custom_fields_bundle Create a curated set of custom fields in your workspace in one call. Either by Write plutio_contract_from_preset Create a Plutio contract from a preset scaffold. Handles the multi-step flow transparently Write plutio_create_dashboard_page_from_preset Add a new page to a Plutio role dashboard (Settings → Custom Pages → <role>) populated fro Write plutio_proposal_from_preset Create a fully-populated proposal in Plutio from a preset scaffold. Handles the multi-step Read plutio_analyze_proposal Inspect an existing proposal Read plutio_api_reference Return a compact, machine-readable reference of every Plutio resource this server exposes Read plutio_cashflow_forecast Expected incoming revenue from active subscriptions over a forecast window (default 90 day Read plutio_client_360 Compound lookup: resolves a person by id/email/name, then fetches their company, active pr

All 16 Plutio tools →

Read tools on other servers

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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 plutio_list_custom_fields_bundles

What does the plutio_list_custom_fields_bundles tool do? +

List custom-fields bundles available for plutio_apply_custom_fields_bundle. Each bundle is a curated set of related custom fields — e.g.,. It is categorised as a Read tool in the Plutio MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on plutio_list_custom_fields_bundles? +

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

What risk level is plutio_list_custom_fields_bundles? +

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

Can I rate-limit plutio_list_custom_fields_bundles? +

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

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

plutio_list_custom_fields_bundles is provided by the Plutio MCP server (thecreativelabs/plutio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Plutio tool call.

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

CHECK YOUR STACK →