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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety and open-world profile is covered. The description adds only the field inventory, not auth requirements, rate limits, or freshness of postings, which is thin but adequate given the annotation coverage.

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 compact sentence, front-loaded with the action and resource, then the field list. Very efficient, though the field enumeration is slightly overlong and would read better as a comma-separated tail.

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 one documented parameter, a rich output schema, and annotations covering read/oak-world behavior, the description covers what is needed to call the tool correctly. It does not explain id acquisition or fallback behavior when a posting is missing, so it stops short of fully complete.

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% and there is only one parameter, so the schema fully documents 'id'. The description adds that the id is a Tes job id and implies the lookup scope of the returned record. A 4 reflects that the description reinforces rather than duplicates, with nothing misstated.

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 ('a Tes job posting') plus the identifier, and enumerates the fields returned. Siblings like tes_job_search and tes_job_employer are clearly distinct, so an agent can route correctly without opening schemas.

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?

Use is implicitly clear from 'by id' – this is the detail lookup once an id is known – but the description never says when to use it versus tes_job_search or where an id comes from. Minimum viable, no explicit exclusions or alternative routing.

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