latest_version

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

With no annotations provided, the description fully discloses the return value structure (dict with latest version summary, list of all versions with dates and DOIs, and total count). There are no side effects or destructive actions, and the description accurately represents the read-only nature of the tool.

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?

The description is well-structured with clear 'Parameters' and 'Returns' sections, and it is informative without being overly verbose. Minor redundancy could be trimmed, but the structure aids comprehension.

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?

Given only one required parameter and no output schema, the description covers input, output, and the tool's behavior adequately. It does not mention error handling or edge cases, but for a simple retrieval tool, it is sufficiently 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?

The input schema has 0% description coverage, but the description provides a clear explanation of 'record_id' beyond its type: 'Any version's record ID — the tool finds all versions automatically.' This adds semantic meaning that helps the agent use the parameter correctly.

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?

The description clearly states that the tool gets the latest version and full version timeline of a record, using a specific verb ('Get') and resource ('latest version and full version timeline'), which distinguishes it from siblings that focus on single records or searches.

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 description explains the parameter 'record_id' and that it can be any version's ID, implying the tool finds all versions. However, it does not provide explicit guidance on when to use this tool vs alternatives like 'get_record', nor does it mention when not to use it.

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