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

Annotations already declare readOnlyHint, non-destructive, and closed-world, so the safety profile is covered. The description adds genuine behavioral context beyond them: the newest-first ordering and the 'already in My Looks' flag that lets an agent avoid re-saving. It omits pagination/truncation behavior, though the limit parameter partly covers that.

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?

Two compact sentences with zero filler: the resource and ordering come first, then the actionable cross-tool hint. Every clause carries information an agent can act on.

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 an output schema, full annotation coverage, and a fully described single parameter, the definition gives an agent enough to call it and to know what to do next. The only gap is that 'My Looks' and the relationship to get_look_status are referenced but not spelled out.

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?

Only one parameter (limit), fully documented in the schema at 100% coverage, so the schema does the work and baseline 3 applies. The description mentions a jobId, which is not a parameter of this tool — a helpful pointer to a sibling, but not added meaning for the actual input.

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 the specific resource (the user's finished BeautySpark look generations) and its ordering (newest first), and 'finished' implicitly separates it from get_look_status, which handles in-progress jobs. It never uses an explicit verb like 'list', but the noun phrase plus ordering makes the read intent unambiguous.

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 useful forward guidance by naming save_generation_to_my_looks and the jobId needed to call it, which helps an agent chain the two tools. It offers no explicit when-to-use/when-not guidance relative to close alternatives like get_look_status or get_my_look; the distinction must be inferred from the word 'finished'.

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