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

Annotations already declare readOnlyHint=false, destructiveHint=true, and idempotentHint=false, so the write/irreversible profile is covered. The description adds real value by specifying the accepted id forms and the ISO-8601 datetime format with a concrete example, but says nothing about whether repeat calls duplicate events or what happens on invalid ids.

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 short sentences, front-loaded with the action and the target resource, followed by the one format detail an agent would otherwise get wrong. No filler.

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?

A destructive write tool with six undocumented parameters and no output schema needs more: the description omits the required title field, the note field, optional end time, and any return/confirmation behavior. The id and datetime guidance helps but leaves the caller to guess at half the payload.

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 0%, so the description must carry the burden. It documents the leads_submit_id / leads_submit_uuid alternative and the datetime format, but leaves leads_submits_event_title (required), the note field, and end_datetime entirely unaddressed in both schema and description.

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 gives a concrete verb+resource: put a calendar entry (call, meeting, follow-up reminder) on a lead submission. That is far more specific than the tool name alone. It does not, however, distinguish itself from the sibling create_appointment, which plausibly overlaps in function.

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?

Usage is implied by the framing — attach a calendar entry to a submission identified by id or uuid — but there is no explicit when-to-use statement or exclusion relative to create_appointment or the lead-submit stage tools. An agent must infer the choice from the resource name.

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