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karbassi

slack-mcp

by karbassi

conversations_accept_shared_invite

Accept a Slack Connect channel invitation. Provide a channel name and optionally an invite ID or channel ID to join.

Instructions

Accept an invitation to a Slack Connect channel.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
channel_nameYesName for the channel once accepted.
channel_idNoID of the channel the invite is for, if already known.
free_trial_acceptedNoAccept a paid-feature free trial as part of accepting the invite.
invite_idNoID of the invite to accept. Required unless ``channel_id`` is given.
is_privateNoCreate the accepted channel as private.
team_idNoEncoded team ID accepting the invite (for org-wide tokens).

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Behavior1/5

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

No annotations are provided, so the description must disclose behavioral traits. It only states the basic action with no details about side effects, required permissions, rate limits, or what happens after acceptance. This 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, front-loaded sentence that is concise. It earns its place but could be enriched with more context without losing conciseness.

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 6 parameters and an output schema, the description is too minimal. It does not explain the process, prerequisites, or expected outcomes, leaving the agent without enough context to use the tool correctly.

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

Parameters3/5

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

Schema description coverage is 100%, so the schema already documents all parameters. The description adds no additional meaning beyond the schema, warranting a baseline score of 3.

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 ('Accept an invitation to a Slack Connect channel') with a specific verb and resource. However, it does not differentiate from sibling tools like conversations_approve_shared_invite, missing the chance to clarify when to use this vs. similar tools.

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 usage guidance is provided. The description does not mention when to use this tool, prerequisites, or when not to use it. Sibling tools are not referenced for comparison.

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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