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

Annotations already declare it as non-read-only and non-destructive, so the bar is lowered, yet the description still adds real behavior: snooze is temporary and the item returns after N days, and restore reverses a done or dismissed state. That reversibility/temporality detail is not in the annotations. It doesn't say what happens to the item on dismiss long-term or how errors surface, so it isn't exhaustive.

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?

One front-loaded sentence with no filler; the verb and source resource lead. The inline parenthetical glosses make it dense, but each clause carries information needed to pick an action value.

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 needed and annotations covering the safety profile, the description adequately covers all three parameters and all four action semantics. It omits any statement of reversibility beyond restore or failure behavior, leaving minor gaps for a mutation tool.

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 100% (baseline 3), but the description adds meaning the schema lacks by glossing each enum value rather than just listing it ('snooze (hide it for some days, then it returns)', 'restore (move a done or dismissed item back)'). It adds nothing about itemId or the snoozeDays 1-30 bound, which the schema already covers, so it's above baseline but not maximal.

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+resource ('update home item') and names the source tool ('an item from get_home'), then enumerates the exact action space. An agent can distinguish this mutation tool from the read-only get_home sibling without opening either schema.

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 clear per-action context for when each value applies (done = finished, dismiss = not wanted, snooze = hide temporarily, restore = undo a done/dismissed item), which effectively routes the agent. It stops short of explicit exclusions or prerequisites (e.g. that the item must come from get_home), so it doesn't reach a 5.

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