spraay_research_preprints_by_id

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

Annotations already declare readOnlyHint=true and openWorldHint=true. The description adds cost information and guidance to pass fields as typed arguments, which provides additional behavioral context beyond annotations. There is no contradiction.

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 extremely concise, consisting of three short sentences that immediately convey purpose, cost, read-only nature, and argument style. No redundant information, and the most critical information is front-loaded.

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 the simplicity (single parameter, output schema present, annotations provided), the description covers the essential aspects: purpose, cost, behavioral constraints, and parameter usage. It does not include examples or input format specifics, but the output schema mitigates the need for return value explanation.

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 one parameter 'id' with a vague description 'id parameter' (100% coverage). The description clarifies that the id is an arXiv preprint ID, adding meaning beyond the schema. It also provides guidance on how to pass the parameter ('directly as typed arguments').

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 it retrieves arXiv preprint metadata by ID. The tool name and description together specify the exact resource and action, distinguishing it from sibling tools like spraay_research_preprints_search and spraay_research_preprints_recent.

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 indicates it is read-only and costs $0.001 USDC, implying it should be used when you have a specific arXiv ID. However, it does not explicitly mention when to use this tool versus alternative tools (e.g., search or recent preprints), nor does it provide exclusions or prerequisites.

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