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

With no annotations at all, the description carries the full disclosure burden, yet it says nothing about read-only safety, permissions/authentication, pagination limits, or rate behavior. It pivots immediately to listing returned fields, which is output content rather than behavioral disclosure.

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?

Purpose is front-loaded in a single efficient sentence, which is good. The subsequent bulleted list of key return fields largely duplicates the existing output schema, spending real estate on information the agent already has.

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?

The tool has six parameters at 0% required, 33% schema coverage, and no annotations, so the description should clarify query construction and mode selection. Instead it details return fields that the output schema already covers, leaving the calling semantics under-specified.

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 only 33%, so the description needs to compensate — and it does not. It alludes to 'identifier (e.g. DOI)' and 'associated with a collection,' but is silent on limit, cursor, fields, and provider, leaving more than half the parameters undocumented in both places.

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 opens with a concrete verb+resource ('Discover citation records') and distinguishes two access modes: association with a collection vs. lookup by identifier (e.g. DOI). It is clearly the citation-oriented sibling among get_collections/get_granules/get_variables, though it never explicitly contrasts itself with them.

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 this tool to evaluate citation relevance for a collection' gives an implied use case, and the two modes hint at when each applies. However, there is no explicit when-not guidance, no mention of prerequisites, and no routing to alternatives for citation lookup vs. collection-scoped discovery.

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