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

Annotations already declare readOnly, idempotent, non-destructive and closed-world, so the safety profile is covered. The description adds genuine content value by listing what the response contains (photo/DOB/nationality/marital-status norms, date format, CV language). It omits edge behavior such as what happens for an unsupported country, which keeps it just below a 5.

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 sentences, front-loaded with the core purpose followed by the usage cue. The first sentence is long but every listed convention earns its place by telling the agent what to expect back. Little waste overall.

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?

There is no output schema, so the description carries the burden of describing return content, and it does so by enumerating the convention categories. With only two fully documented parameters and a simple read-only lookup, an agent has enough to call it correctly; only fallback/error behavior for unknown countries is unaddressed.

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%, so both parameters are already documented, including the locale enum and its account-default behavior. The examples in the description ('de', 'fr', 'nl', 'se') merely repeat what the country parameter already shows and add no new format or validation semantics. 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 and resource ('Get a country's CV/resume conventions') and then enumerates exactly which conventions are returned: photo, date of birth, nationality, marital status, date format and CV language. That level of specificity cleanly separates it from siblings like create_takemeup_cv or rewrite_takemeup_cv, which operate on actual CV content rather than locale rules.

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 a clear triggering condition: 'Use before writing or reviewing a CV for a job in that country.' No sibling alternatives are named (e.g. vs. translate_takemeup_cv or export_takemeup_europass), but the usage window is unambiguous enough that an agent knows when to reach for it.

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