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karbassi

slack-mcp

by karbassi

conversations_members

Retrieve the list of members in a specified Slack conversation. Use this to get participant details for channels or group chats.

Instructions

Retrieve members of a conversation.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
channelYes
cursorNo
limitNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It implies a read-only operation but fails to explain pagination behavior via cursor/limit parameters, error scenarios, or effects on the system. The description is insufficient for an agent to understand the tool's behavior.

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

Conciseness3/5

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

The description is a single sentence, which is concise but lacks necessary detail. While it is not verbose, it fails to provide important information, making it insufficient rather than appropriately concise.

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

Completeness2/5

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

Given the tool has three parameters including pagination controls, and no annotations or schema descriptions, the description is incomplete. It does not cover how to use the parameters, what the output contains, or any constraints. The presence of an output schema does not excuse the lack of guidance in the description.

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

Parameters1/5

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

The input schema has 0% description coverage, and the tool description does not add any meaning to the parameters. It does not explain what 'channel' refers to (ID or name) or how to use 'cursor' and 'limit' for pagination. This is a critical gap.

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

Purpose4/5

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

The description clearly states the tool retrieves members of a conversation, using a specific verb and resource. It distinguishes itself from sibling tools like conversations_info or conversations_list, which have different purposes. However, it could be more specific about the scope or type of members.

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 provides no guidance on when to use this tool versus alternatives, prerequisites, or limitations. There is no mention of authentication requirements or that the user must be a member of the conversation.

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

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