invite_users_to_channel

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

Annotations already indicate mutation and potential destructive effects, so no credit is given for that. The description adds the return contract — 'True if all invitations succeeded, False otherwise' — which is useful, but it does not disclose partial-failure behavior, duplicate handling, or permission requirements.

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

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

The description is compact and well-structured with a one-sentence purpose, Args block, and Returns block. There is no filler; every sentence adds information needed to invoke the tool.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a two-parameter tool, the description is largely complete: it explains both inputs, their format, and the boolean result. The main gap is absence of usage context and edge-case behavior, but given the low complexity and supportive annotations, the remaining gaps are minor.

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

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

Although schema coverage is 0%, the description compensates by defining both parameters with meaningful hints: channel_id is a target C... channel ID and user_ids is a list of U... user IDs. This provides format and role information not present in the schema's bare type declarations.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description opens with a specific verb and resource: 'Invite multiple users to a channel.' It clearly identifies the action, the target, and the object. This differentiates it from sibling tools like join_channel, create_channel, and send_dm without needing the schema.

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

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

No guidance is given about when to choose this over alternatives such as join_channel, create_channel, or send_group_dm. It does not state prerequisites or exclusions, so an agent gets no direct usage-vs-alternative direction.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.