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

Goes well beyond the annotations (readOnly/idempotent/openWorld) by disclosing the keyless rate-limit profile, the concrete HTTP 429 failure mode, the retry remedy, and the option to supply a key. This is exactly the operational context an agent needs before invoking a flaky network 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?

Front-loaded with purpose and followed by auth/rate-limit, return, and usage notes in that order. The em-dash parenthetical is somewhat dense but each sentence carries actionable information.

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 an output schema covering return fields and annotations covering the safety profile, the description supplies the remaining essentials: scope, citation-count rationale, and rate-limit behavior. Nothing needed to call it correctly is missing.

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%, so 'query' and 'limit' (default 10, max 100) are already fully documented. The description adds no parameter-level detail, so the baseline 3 applies.

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+resource (search Semantic Scholar papers) and flags the distinguishing attribute 'citation counts'. The closing 'Use when citation counts matter' implicitly separates it from citation-less siblings like arxiv_search, but no sibling is named explicitly.

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 when citation counts matter' gives a clear selection condition, and the rate-limit note tells the agent when to supply a key. It stops short of naming alternatives or stating when NOT to use this over crossref_works/openalex_works.

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