Trello MCP Server

Get Board Members

get_board_members

Retrieves all members of a Trello board using its board ID. Use it to identify collaborators and review who has access to a board.

Instructions

Get all members of a Trello board.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "boardId": "<boardId>"
    },
    "name": "get_board_members"
  }
}

Input Schema

Name	Required	Description	Default
`boardId`	Yes	The ID of the board

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.2.0Sep 6, 2026

TDQS

A3.6/5.0

Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the behavioral disclosure burden. It correctly implies a read-only operation but does not mention output format, pagination, permissions, or error behavior. For a simple getter, this is minimally transparent but not richly informative.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence with no filler or redundant wording. The verb and resource are front-loaded, and every word contributes to the meaning.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a one-parameter, read-only tool, the description is essentially complete: it states the resource, the action, and the required input. It lacks an explicit return shape or alternative routing, but the tool's simplicity means nothing critical is missing.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, with boardId already documented as 'The ID of the board.' The description does not need to elaborate on the parameter and does not conflict with the schema; the baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb, 'Get,' and a specific resource, 'all members of a Trello board.' It is clearly distinguished from siblings like get_organization_members because it scopes the operation to a board.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no guidance on when to use this tool over similar member-related tools such as get_organization_members or get_member_boards. The context is only implied by the tool name and phrasing, with no explicit exclusions or alternatives.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server