Validate group slug

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

Read-only behavior is already covered by annotations (readOnlyHint=true). The description adds useful context by specifying the POST endpoint and required calendars/groups.write scope, which are not available in annotations or schema.

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 short and includes helpful endpoint/scope details, but it opens with 'Validate group slug', which repeats the title and the next sentence. The redundant phrase could be removed without losing meaning.

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 two-parameter validation tool, the description supplies endpoint, method, scopes, and the outcome it reports. It does not specify the exact response shape, but 'available or not' conveys the intended result, and no output schema is present.

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?

Schema description coverage is 100%, so the schema already documents both parameters. The description adds little beyond the slug's role in availability, and locationId remains minimally explained, but no compensation is required at this coverage level.

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 names the exact resource (group slug) and the specific action: checking availability. It is clearly distinct from siblings like calendars_get_groups, which list groups rather than validating a slug.

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 purpose implies the tool is for availability checks, so an agent can infer when to use it, but there is no explicit guidance on prerequisites, timing (e.g., before creating a group), or when not to use it versus related calendar tools. No alternatives are named.

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