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

The description adds pricing and access details beyond the annotations: $0.01 per call via x402 USDC or a card key, first 25 free, failed calls free, and each repeat call is charged. It also confirms the read-only nature by saying it 'Reads or computes only and changes nothing,' consistent with readOnlyHint=true and destructiveHint=false.

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 front-loaded with purpose, returned fields and usage contexts, then closes with pricing and read-only behavior. It is a bit long but every section is relevant; minor repetition around charging is acceptable for billing clarity.

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?

Although there is no output schema, the description lists the key return fields an agent would need: title, authors, year, venue, citation count, DOI link and abstract where available. Combined with usage guidance, parameter constraints and pricing/auth details, it is complete for this search tool.

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 all three parameters are already documented in the schema with their types and constraints. The description only restates that fromYear is optional and that up to 20 results are available, adding little beyond the schema's own limit and fromYear descriptions.

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 names a specific verb and resource, 'Search scholarly literature across journals, conferences, preprints and books,' and enumerates returned fields such as title, authors, venue, citation count and DOI. This clearly distinguishes it from general search siblings like search, news and wikipedia.

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?

It gives explicit use cases: research agents, literature reviews, fact-checking claims against published work, and finding a DOI for a citation, plus an example query. It does not explicitly name alternative tools or state when not to use it, so it is strong but not fully exhaustive.

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