TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD

Retrieves attachments for a Trello card.

SERVERTrello SOURCEmcp-server-trello

Low RISK CLASS

Category Read

Parameters 30 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

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

WHAT IT DOES

What TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD does on Trello

AI agents call TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD 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
`fields`	string	—	Comma-separated list of fields to return (e.g., bytes, date, edgeColor, idMember, isUpload, mimeType, name, previews, url), or 'all'.
`filter`	string	—	Filter for attachments: 'cover' for card cover, 'true' for all, or 'false' for non-cover (behavior can vary).
`idCard`	string	—	The ID or shortLink of the Trello card from which to retrieve attachments.

Parameters from the server's own tool schema.

RISK

Why TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD is rated Low

This tool retrieves/fetches attachment metadata or content from a Trello card. It performs no side effects, does not create, modify, or delete data. The blast radius of misuse is minimal — an attacker could enumerate attachments on a board they have access to, but cannot alter the board state or trigger external actions. Classified as Read with low severity.

From the tool's definition Tool name contains 'GET' and description states 'Retrieves attachments' — indicates a read-only operation that queries data without modification.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD 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_ATTACHMENTS_BY_ID_CARD, this is the rule to start with:

TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD Allowed

TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD 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_ATTACHMENTS_BY_ID_CARD": {}
  }
}

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_ATTACHMENTS_BY_ID_CARD call is checked against it from then on.

FAQ

Questions about TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD

What does the TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD tool do? +

Retrieves attachments for a Trello card. 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_ATTACHMENTS_BY_ID_CARD accept? +

TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD accepts 3 parameters: fields, filter, 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_ATTACHMENTS_BY_ID_CARD? +

Register the Trello MCP server in PolicyLayer and add a rule for TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD: 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_ATTACHMENTS_BY_ID_CARD? +

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

Can I rate-limit TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD? +

Yes. Add a rate_limit block to the TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD 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_ATTACHMENTS_BY_ID_CARD completely? +

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

TRELLO_GET_CARDS_ATTACHMENTS_BY_ID_CARD 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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