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

Annotations already declare readOnlyHint=false and destructiveHint=false. The description adds valuable context beyond them: nothing is written or charged until approval, i.e., a low-cost draft stage. It does not address the non-idempotent hint (repeat calls create new briefs), leaving one gap.

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 tight sentences with zero waste. The core purpose is front-loaded, followed by the approval workflow and the key default behavior.

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?

An output schema exists so return values need no explanation, and the draft/approval workflow is well covered. Yet for an 8-parameter tool with no schema descriptions, the near-total absence of parameter semantics (tone, topic, intent, audience) leaves meaningful gaps.

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?

With 8 parameters and 0% schema description coverage, the description must compensate, but it only explains tracked_domain_id (defaulting to the workspace's first tracked domain). The other seven parameters (tone, topic, intent, audience, language, target_queries) are left entirely undocumented.

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+resource: 'Create a draft brief for an article.' The word 'draft' cleanly distinguishes this from approve_brief and update_brief siblings. However, it does not explicitly contrast itself against update_brief or get_brief.

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 embeds the workflow by naming approve_brief as the required next step ('until the brief is approved with approve_brief'), which implies when to call this. But there is no explicit 'use this when' statement nor guidance versus update_brief for modifying an existing brief.

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