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karbassi

slack-mcp

by karbassi

search_modules_channels

Search Slack channels by name or topic to find specific channels quickly.

Instructions

Search channels by name or topic (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?

With no annotations, the description must disclose behavior but only notes it's an 'undocumented session endpoint'—failing to clarify safety (read-only?), side effects, or response characteristics.

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 with essential purpose and a caveat, though it could benefit from light structuring (e.g., separating purpose from notes).

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 0% schema descriptions, no annotations, and 3 parameters, the description omits pagination details, return format, and usage context, leaving the tool under-specified.

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 coverage is 0%; the description only hints that 'query' filters by name/topic but provides no explanation for 'cursor' or 'count' (pagination), nor links to the output schema.

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 clearly states the action ('search') and the resource ('channels') with criteria ('by name or topic'), distinguishing it from sibling tools like search_messages or conversations_list.

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?

No guidance is provided on when to use this tool versus alternatives (e.g., conversations_list or other search_* tools), nor any exclusions or prerequisites.

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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