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karbassi

slack-mcp

by karbassi

slack_lists_access_delete

Revoke access to a Slack list for specific channels or users by providing the list ID and optionally channel or user IDs.

Instructions

Remove access to a list for specified entities.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
list_idYesID of the list (a file ID) to remove access from (e.g. ``F0123``).
user_idsNoUser IDs to revoke access for (e.g. ``["U0123"]``).
channel_idsNoChannel IDs to revoke access for (e.g. ``["C0123"]``).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior1/5

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

With no annotations, the description carries full burden. It only states the operation; no disclosure of behavioral traits such as required permissions, irreversibility, or side effects.

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

Conciseness2/5

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

The description is a single sentence but is under-specified. It omits important details like required parameters and entity types, making it not earn its brevity.

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?

For a tool with 3 parameters (1 required) and an output schema, the description fails to mention the required `list_id` or the return behavior. It lacks completeness for an agent to use it confidently.

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?

Despite 100% schema coverage, the description adds no additional meaning beyond listing 'specified entities.' It does not elaborate on the parameters (list_id, user_ids, channel_ids) or their roles.

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 action 'Remove access' and the resource 'a list for specified entities.' It distinguishes from sibling tools like slack_lists_access_set. However, 'specified entities' is vague; the schema clarifies it means users and channels.

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 on when to use this tool versus alternatives (e.g., slack_lists_access_set for adding access). No mention of prerequisites or when not to use it.

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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