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karbassi

slack-mcp

by karbassi

search_modules_people

Search Slack for people by name, title, or department to locate and connect with colleagues.

Instructions

Search people by name, title, or department (undocumented session endpoint).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYes
cursorNo
countNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior2/5

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

No annotations are provided, so the description must fully disclose behavior. It mentions 'undocumented session endpoint' but does not specify if the operation is read-only, whether it has side effects, rate limits, or potential instability. The behavioral description is insufficient.

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

Conciseness4/5

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

The description is a single sentence that immediately states the purpose, making it front-loaded and concise. However, it could include more detail without becoming verbose.

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 an output schema and three parameters (including pagination params), the description lacks completeness. It does not mention pagination behavior, return format, or any limitations. The description is too minimal for the tool's complexity.

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

Parameters2/5

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

Schema description coverage is 0%, so the description must compensate. It adds meaning for the 'query' parameter by stating searchable fields (name, title, department), but cursor and count parameters are unexplained. The description provides minimal value beyond the schema.

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 searches people by name, title, or department. It identifies the resource (people) and search fields, though it doesn't differentiate from sibling search_modules_* tools beyond the resource.

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 like search_all or search_modules_messages. The phrase 'undocumented session endpoint' hints at context but does not offer explicit when-to-use or when-not-to-use instructions.

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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