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

With no annotations provided, the description carries the behavioral disclosure burden. It discloses the key behavior: title is required, task/event/meeting have different required time fields, recurrence applies only to tasks, and the item can be linked to contact/company/deal. It does not describe the response shape or side effects, but the creation semantics and conditional field requirements are clearly communicated.

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 compact and front-loaded: the core purpose appears first, followed by a tight bulleted breakdown of the three kinds. Every sentence adds useful information, with no filler or repetition of the tool name.

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 an 11-parameter tool with no output schema and no annotations, the description does a solid job: it covers the main behavior, distinguishes the three kinds, and explains the linking parameters. Minor gaps remain—notes is not mentioned and the default kind=task is only in the schema—but the description plus schema together provide enough to call the tool correctly.

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 55%, so the description meaningfully compensates by explaining the kind-specific meanings of dueAt, startAt, endAt, location, and recurrence. It also adds semantics for the otherwise undocumented contactId, companyId, and dealId by stating they link to a contact, company, or deal. Only notes remains without added explanation.

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 opens with a specific verb and resource: "Create a task, event, or meeting." It clearly distinguishes the tool from siblings like tasks_update, tasks_complete, tasks_get, tasks_list, and tasks_delete by focusing on creation. The bulleted breakdown of the three kinds further sharpens what the tool does.

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 gives clear context for when to call this tool: whenever a task, event, or meeting needs to be created. It does not explicitly name alternatives or state when not to use it, but the create-focused wording plus the sibling set makes the appropriate use case obvious.

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