get_attachment

Get details of a specific attachment.

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/get-attachment.md

WHAT IT DOES

What get_attachment does on Trello MCP Server

AI agents call get_attachment 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 get_attachment is rated Low

This tool queries and retrieves metadata about an existing attachment in Trello without creating, modifying, deleting, or executing any actions. It is a straightforward read operation with minimal security risk—the only exposure being access to attachment metadata that the user is already authorized to view within their Trello board context.

From the tool's definition Tool name 'get_attachment' and description 'Get details of a specific attachment' indicate a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

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

get_attachment Allowed

get_attachment 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": {
    "get_attachment": {}
  }
}

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 get_attachment call is checked against it from then on.

FAQ

Questions about get_attachment

What does the get_attachment tool do? +

Get details of a specific attachment. 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 get_attachment? +

Register the Trello MCP Server MCP server in PolicyLayer and add a rule for get_attachment: 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 get_attachment? +

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

Can I rate-limit get_attachment? +

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

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

get_attachment 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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