Get Job Countries

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

No annotations are provided, so the description carries the burden. 'Retrieve list of available countries' implies a safe, side-effect-free read of static reference data, which is adequate for a zero-parameter lookup, but it does not describe the result shape (names vs. ISO codes), ordering, or whether the list is exhaustive or cached.

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 short sentences, front-loaded with the core action and followed by a single value statement. Every sentence earns its place 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?

For a zero-param reference lookup with no output schema, the description is nearly complete. The only meaningful omission is the return format (how country values are represented), which matters if the result feeds into another tool's filter, but overall it is sufficient to invoke 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 takes zero parameters, so there is no parameter semantics to convey and the baseline is 4. The description correctly implies no input is needed beyond the call itself.

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?

Specific verb+resource ('Retrieve list of available countries') scoped to job filtering, so an agent immediately knows what comes back. It does not explicitly distinguish itself from the sibling get_job_types, which is the same reference-data pattern, so it stops short of a 5.

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?

'Essential reference data for geographic job searches and market analysis' implies the usage context and suggests pairing with job search tools, but it never states when to call this versus alternatives or any prerequisite. Usage is implied rather than prescribed.

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