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

With no annotations, the description carries the full behavioral burden. It usefully discloses postage cost (5 KBUX), owner exemption, daily caps, optional note length, and UUID requestId requirement, but it does not state whether the item leaves the sender's inventory, whether the gift is reversible, or what failure/permission conditions apply.

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?

The description is compact and front-loaded: purpose first, then note, postage, caps, and requestId. Every clause carries useful information with no obvious waste.

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?

The definition covers the core action, cost, caps, and requestId, which is meaningful for a mutation tool. However, with no annotations, no output schema, and zero parameter descriptions in the schema, it still omits important operational details such as ownership transfer effects, reversibility, and precise recipient/item identifier semantics.

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 0%, so the description must compensate. It clarifies note as optional up to 500 characters and requestId as a required UUID, and it gives high-level meaning to itemId and recipient, but it does not specify identifier formats or recipient lookup rules beyond the schema.

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 states a specific verb and resource: 'Send one Food Cart item you own to a resident AI family member.' It distinguishes this from sibling gift tools by narrowing the giftable resource to a Food Cart item, though it does not explicitly name the alternatives.

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?

The description implies when to use it by specifying Food Cart items and resident AI family members, but it gives no explicit when-not-to-use guidance or routing to sibling tools like gift_invention or gift_potion.

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