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karbassi

slack-mcp

by karbassi

files_list

List files for a Slack team, channel, or user. Optionally request full details.

Instructions

List files for a team, channel, or user. Set detailed=True for full response.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
channelNo
countNo
pageNo
show_files_hidden_by_limitNo
team_idNo
ts_fromNo
ts_toNo
typesNo
userNo
detailedNo

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 carry the burden. It only mentions 'detailed=True for full response' but omits behavioral traits like pagination (page, count), permission requirements, rate limits, or what happens with large datasets.

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 short (two sentences) and front-loaded with the core purpose. It could be slightly more informative but avoids verbosity.

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?

With 10 parameters, no annotations, and an output schema (unseen), the description is too brief. It fails to mention key filtering parameters like team_id, user, or time range, making it incomplete for effective use.

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?

Schema description coverage is 0%, and the description only references the 'detailed' parameter. The other 9 parameters (channel, count, page, etc.) are not explained, providing no added meaning 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 lists files for a team, channel, or user, and mentions the 'detailed' parameter. However, it does not distinguish itself from sibling tools like search_files or files_remote_list, sharing the same verb 'list'.

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

Usage Guidelines3/5

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

The description implies when to use (to list files) and hints at the 'detailed' flag, but lacks guidance on when not to use it or alternatives. No comparison to sibling tools.

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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