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

The annotations declare readOnlyHint=false and idempotentHint=false, and the description explains the non-obvious reason: despite being a GET-style endpoint, asking delivers a stage that has come due. It also clarifies what delivered/granted mean and when redeemed is false, though it does not cover auth or rate limits.

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 three tightly packed sentences, front-loaded with the resource and return data, then the key side effect, then the redeemed=false edge case. Every sentence adds useful information with no filler.

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?

Given that the tool has no parameters, has an output schema, and has annotations indicating side-effect profile, the description supplies the remaining critical context: the collection behavior and the meaning of delivered/granted/redeemed. An agent has enough information to call it correctly.

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?

The tool has zero parameters, so there are no parameter semantics to document. The baseline for no parameters is 4, and the description appropriately avoids inventing parameter details.

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 names a specific resource and scope: this account's gift pack from a redeemed gift code, including stages, delivered items, and missing requirements. It is clear what the tool returns, but it does not explicitly distinguish itself from the sibling gift_pack tool.

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 implies usage by explaining that asking delivers a due stage, so the agent can infer this is for checking or collecting gift-pack progress. However, there is no explicit when-to-use guidance, exclusions, or comparison with alternatives such as gift_pack or redeem_gift_code.

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