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

No annotations are provided, so the description carries the full burden. It does disclose useful behavioral context (the seed is deterministic and on-chain, and the profile is 'full'), but it never states that this is a read-only operation nor what happens for an unminted or invalid token id. Adequate but leaves the failure mode undisclosed.

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 sentence, front-loaded with what the tool fetches, then the returned field list, closed by the scope caveat. No filler or repetition of the title.

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 usefully enumerates the returned fields so the agent knows what to expect, and one required param is fully schema-documented. The remaining gap is error/edge behavior for unknown token ids, which is minor for a straightforward one-param lookup.

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% for the single tokenId parameter, so the schema already documents type and meaning. The description adds only the scope note 'any minted token id', which lightly implies that unminted ids are out of range but adds no syntax beyond the schema. Baseline 3 applies.

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 (get) and resource (Spirit Cards token by id) and enumerates exactly what the payload contains: species, element, rarity, stats, and the on-chain seed. An agent can distinguish this read tool from the nonce/leaderboard/pool siblings 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?

The clause 'Works for any minted token id' gives a mild scope hint, implying it is not limited to a subset of tokens, but there is no explicit when-to-use or when-not-to-use guidance and no named alternative. Usage is only implied.

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