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

Annotations already declare readOnlyHint=false, idempotentHint=true and destructiveHint=false, so the bar is lower; the description still adds real value by ruling out mutation of existing drafts and order placement, and by clarifying that review/payment stay outside the tool. It omits auth/permission requirements, but the boundary statements go beyond the structured hints.

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?

Four short sentences, all front-loaded, with the core action first and boundary constraints after. No filler and every sentence carries a distinct constraint.

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 and a large undocumented nested content schema, the description is adequate but not sufficient: an agent still lacks guidance on the plan enum, scheduling fields, and what a returned draft identity looks like. The negative scoping (no order, no mutation) is a good compensating detail.

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 effectively 0% across a 23-field nested content object, so the description carries a heavy compensation burden. It does explain the requestId idempotency semantics (same UUID on retry, new one for new content), which is genuine added meaning, but says nothing about plan, scheduleMode, scheduledAt, categories or the other content fields.

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 specific verb and resource ('Create an account-owned draft') and sharpens scope with negatives ('Never changes an existing draft or places an order'). It does not, however, distinguish itself from the very similar sibling ai_draft_release, so an agent gets no help choosing between them.

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 states a clear use precondition ('Requires an explicit request to save') and gives retry guidance ('Reuse the same UUID requestId on retry; use a new one for different content'). It names no alternative tools, so there is no explicit when-not or sibling routing despite the presence of ai_draft_release.

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