TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD

Fetches a specific field from the Trello list that a given card belongs to.

SERVERTrello SOURCEmcp-server-trello

Low RISK CLASS

Category Read

Parameters 20 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/trello/trello-get-cards-list-by-id-card-by-field.md

WHAT IT DOES

What TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD does on Trello

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

Parameter	Type	Required	Description
`field`	string	—	The specific field to retrieve from the list associated with the card. Common valid Trello list fields include `name`, `closed` (status), `pos` (position), `idB
`idCard`	string	—	The ID or short link of the Trello card. The list associated with this card will be targeted.

Parameters from the server's own tool schema.

RISK

Why TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD is rated Low

This tool retrieves metadata about a Trello list associated with a card—specifically one field value. It queries existing data without creating, modifying, deleting, executing code, or moving money. The blast radius of misuse is minimal: an attacker could learn about board/list organization but cannot alter state or access sensitive card contents beyond what the field exposes. Classified as Read with low severity.

From the tool's definition Tool description states 'Fetches a specific field' which is a retrieval operation with no modification. The name includes 'GET' indicating read-only access.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD safely

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

TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD Allowed

TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD 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": {
    "TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD": {}
  }
}

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

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

FAQ

Questions about TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD

What does the TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD tool do? +

Fetches a specific field from the Trello list that a given card belongs to. It is categorised as a Read tool in the Trello MCP Server, which means it retrieves data without modifying state.

What parameters does TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD accept? +

TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD accepts 2 parameters: field, idCard. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD? +

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

What risk level is TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD? +

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

Can I rate-limit TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD? +

Yes. Add a rate_limit block to the TRELLO_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD 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_GET_CARDS_LIST_BY_ID_CARD_BY_FIELD completely? +

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

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

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