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

Annotations already declare read-only, idempotent, non-destructive, and closed-world behavior, so the description is not required to restate safety. It usefully adds that the result set is bounded and that links are source-derived and epistemically weak, which is real behavioral context an agent would otherwise lack.

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 tight sentences, front-loading what is returned and following with the interpretive caveat. No filler or redundant restatement of the tool name.

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?

An output schema exists, so return values need not be described, and annotations cover the safety profile. What remains thin is the lack of differentiation from get_citation and any note on limit behavior, but overall the definition is sufficient to invoke the tool 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?

Schema coverage is 50%: id is documented as a numeric string, not a DOI/URL. The description adds that the ID must be a 'visible record ID' and that results are 'bounded', loosely signaling the limit parameter, but it never explains limit's cap or ordering. Baseline 3 is appropriate.

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: returning explicit reference DOIs plus indexed citing records for a record ID. This is concrete enough to distinguish it from a single-citation lookup or a general search, though it never names the closely related sibling get_citation.

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?

There is no explicit when-to-use or when-not-to-use guidance relative to the obvious alternative get_citation. The only guidance is an interpretive caveat that the links are incomplete and not evidence of support, criticism, or trial/result identity, which tells the agent how to read results but not when to pick this tool.

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