trello_search

THE RISK

Low Risk

Why trello_search needs a policy

The trello_search tool retrieves and queries data from Trello without creating, modifying, or deleting any content. It is a standard search/query operation that fits the Read category. Severity is low because search operations have minimal blast radius — the worst case is information disclosure of already-accessible data, with no side effects on data integrity or business operations.

From the tool's definition Tool description states 'Universal search across all Trello content' and 'Use this to find specific items by keywords or phrases' — a read-only query operation with no modification or destructive capability.

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

POLICY

How to control trello_search

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

policy.json

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

trello_search 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 Trello Desktop MCP — 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

Related tools and policies

More Trello Desktop MCP tools

Write create_card Create a new card in a Trello list. Use this to add tasks, ideas, or items to your workflo Write move_card Move a card to a different list. Use this to change a card\ Write trello_add_comment Add a comment to a Trello card. Use this to add notes, updates, or discussions to cards. Write trello_create_list Create a new list in a Trello board. Use this to add workflow columns like Write update_card Update properties of an existing Trello card. Use this to change card details like name, d Read get_board_details Get detailed information about a specific Trello board, including its lists and cards. Use Read get_card Get detailed information about a specific Trello card, including its content, status, memb Read get_lists Get all lists in a specific Trello board. Use this to see the workflow columns (like

All 19 Trello Desktop MCP tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

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 trello_search

What does the trello_search tool do? +

Universal search across all Trello content (boards, cards, members). Use this to find specific items by keywords or phrases. It is categorised as a Read tool in the Trello Desktop MCP MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on trello_search? +

Register the Trello Desktop MCP server in PolicyLayer and add a rule for trello_search: 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 Trello Desktop MCP. Nothing to install.

What risk level is trello_search? +

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

Can I rate-limit trello_search? +

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

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

trello_search is provided by the Trello Desktop MCP server (kocakli/trello-desktop-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Trello Desktop MCP tool call.

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

CHECK YOUR STACK →