list_boards

List all Trello boards for the authenticated user.

SERVERTrello MCP Server SOURCEabdwyer/trellomcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/abdwyer-trellomcp/list-boards.md

WHAT IT DOES

What list_boards does on Trello MCP Server

AI agents call list_boards to retrieve information from Trello MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_boards is rated Low

This tool queries and returns existing board data without creating, modifying, deleting, or executing any actions. It is a straightforward read operation that retrieves information the authenticated user already has access to. Low severity due to minimal blast radius—listing boards cannot cause unintended damage even if misused by an agent.

From the tool's definition Tool name 'list_boards' and description 'List all Trello boards for the authenticated user' indicate a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_boards safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Trello MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_boards, this is the rule to start with:

list_boards Allowed

list_boards is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

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

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Trello MCP Server, apply this rule, and every list_boards call is checked against it from then on.

FAQ

Questions about list_boards

What does the list_boards tool do? +

List all Trello boards for the authenticated user. It is categorised as a Read tool in the Trello MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_boards? +

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

What risk level is list_boards? +

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

Can I rate-limit list_boards? +

Yes. Add a rate_limit block to the list_boards 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_boards completely? +

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

list_boards is provided by the Trello MCP Server MCP server (abdwyer/trellomcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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