add_channel_moderator

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. The description only says 'grants moderator status' without explaining side effects, reversibility, or preconditions (e.g., user must already be a channel member). This is minimal for a mutation tool.

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 a single, clear sentence with no unnecessary words. It is appropriately front-loaded and contains zero waste.

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 simple 2-parameter tool with no output schema, the description is adequate but minimal. It does not mention any preconditions, permission requirements, or effects beyond the grant itself. Given the lack of annotations, a bit more behavioral detail would strengthen completeness, but the tool's simplicity keeps it at a passing level.

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?

The input schema covers both parameters with descriptions (100% coverage). The description adds no further parameter meaning, but the baseline for high schema coverage is 3, and the parameters (user_id, channel_id) are self-explanatory in context.

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 clearly states the verb 'grants' and the resource 'moderator status' in a channel. It distinguishes from sibling tools such as remove_channel_moderator and add_broadcast_members by specifying the exact action and target.

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?

The description implies the usage context (making a user a moderator in a channel) but does not explicitly state when to use it versus alternatives, nor any prerequisites or exclusion criteria. There is no mention of the sibling removal tool, so guidance is only implicit.

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