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

Goes well beyond the destructiveHint annotation: it discloses the atomic side effect ('disappears from every list'), the notification consequences (the other owner and current assignee each get one notice), the eligibility window, and a hard limitation ('A completed item cannot be withdrawn'). This is precisely the behavioral context an agent needs before a destructive call.

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?

Front-loads the effect and the disambiguation, then adds eligibility and consequences with no filler sentences. The parentheticals and embedded clause make it slightly dense, but every element carries information.

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 one fully documented parameter, an annotation already covering the destructive nature, and no output schema, the description supplies everything else needed: eligibility rules, side effects, and notifications. Nothing an agent needs to call it correctly is missing.

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 100% and the single item_id parameter is fully documented in the schema (including its source in list_shared_items). The description adds no parameter syntax or format detail, so the baseline 3 is appropriate.

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 ('Withdraw (remove)') and resource ('an item from an AccountHub shared project'), and explicitly disambiguates from a Slack workspace. An agent can distinguish this from siblings like complete_shared_item or update_shared_item without opening any 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?

Specifies who may withdraw (either owner, the placer or the requester who chose the assignee) and the exact item states in which it is permitted (unassigned, sent, accepted, handed back, own to-do), plus the exclusion that a completed item cannot be withdrawn. It does not name an alternative tool for the ineligible cases, so it stops short of a top score.

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