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

Goes well beyond the annotations: discloses that anyone with the link can VIEW title and items without an account, that no owner identity is exposed, that the operation is reversible, the exact return payload, and the full confirmation protocol (status='confirmation_required', action_id, plan_token). The 'reversible' note is additive context against destructiveHint=true rather than a contradiction, since making a list public is still a consequential state change.

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?

Purpose and return value are front-loaded, and the privacy and reversibility facts follow logically. The confirmation behavior is stated twice ('Runs propose->confirm' then the CONFIRMATION block), a minor redundancy, but the second mention adds concrete field names.

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, the description supplies the return shape itself, and for a mutation tool it covers permissions-free recipient access, identity exposure, reversibility, and the two-step confirmation. Nothing an agent needs to invoke or explain the result 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 coverage is 0% and the only parameter is untyped in prose beyond 'Pass wishlist_id'. The description names the parameter but adds no format, source, or ID-resolution guidance (e.g. integer vs string handling), so it does not fully compensate for the schema gap.

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 and resource ('Make one of the caller's wishlists publicly shareable') plus the observable effect ('return its public share URL'), which cleanly separates it from unshare_wishlist. An agent can tell what this does without opening the 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 context for when to use it (opt-in public sharing) and names the exact sibling used to reverse it ('Reversible with unshare_wishlist'). It also explains the propose->confirm gate, though it does not state explicit exclusions such as when sharing is inappropriate.

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