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

Goes well beyond the annotations (destructiveHint, idempotentHint, openWorldHint) by disclosing the required content:write scope, the two-phase confirm protocol, and that the first call mutates nothing and returns a summary plus confirm_token. It also explains validation behavior — unknown fields are refused by name — which an agent could not learn from the 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?

Front-loaded with the action, then permission, then the call protocol in strict temporal order. Every sentence carries information the caller needs (no-op first call, human confirmation gate, token reuse); nothing is padding.

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?

With no output schema, the description covers the return shape (summary, confirm_token) and the two-call contract, which is the critical information for a destructive tool. It omits what happens if the event is not a draft, and whether the deletion is permanent versus recoverable.

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 coverage is only 50% (id has no description), but the description compensates by explaining the confirm_token lifecycle and the requirement that the second call use the same arguments. It still never clarifies what `id` refers to — the draft event identifier — leaving one gap.

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?

States a specific verb and resource plus a scope qualifier ('a draft live event'), which distinguishes it from the mutation siblings archive_live_event, cancel_live_event and unpublish_live_event by narrowing to drafts. It never explicitly names those siblings, so an agent must infer that non-draft events are out of scope, keeping it short of a 5.

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?

Gives unusually explicit procedural guidance: the first call is a no-op validation, the human must agree to the summary, and the second call repeats the identical arguments plus confirm_token. It does not say when to prefer this over archive/cancel for a draft, so alternatives remain unaddressed.

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