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

The description confirms this is a public, read-only catalogue and adds sequencing context ('call before event_create') beyond the readOnlyHint/destructiveHint annotations. It doesn't describe return format or content structure, but the annotations already cover safety, so the added 'starter nominations' and 'sensible defaults' context is sufficient for a low-risk lookup.

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?

Two sentences, no filler: the first defines the resource and gives examples, and the second gives the precise call-time condition. All material information is front-loaded.

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 zero-parameter, read-only catalogue with a clear usage trigger, the description provides everything needed to decide to call it. No output schema exists, but the term 'catalogue' and the presets examples sufficiently convey what will be returned, and no auth or prerequisites are implied beyond 'public.'

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 has zero parameters, so there is nothing for the description to document. The description's mention of 'kind of hackathon rather than exact field values' reinforces that no field-level arguments are expected, matching the empty schema.

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 identifies the resource as a 'public catalogue of event-creation presets' and gives concrete examples (AI build day, student hackathon, corporate innovation day) that make its scope unmistakable. It also anchors the tool's role next to event creation, so an agent can distinguish it from a general event lookup or type list.

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?

It explicitly states when to call it: 'Call before event_create when the user describes a kind of hackathon rather than exact field values.' The inverse condition is implied by 'rather than exact field values,' and the alternative tool (`event_create`) is named, giving clear routing guidance.

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