get_paper_brief

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It clearly states the tool fetches data from ArXiv and searches external sources, implying read-only behavior and network dependency. However, it does not mention potential errors, response format, or rate limits, so it falls short of a perfect score.

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 two concise sentences, front-loaded with the primary action and followed by the secondary search behavior. Every word adds value, with no filler or redundancy.

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 low complexity (single parameter, no output schema), the description adequately covers the tool's purpose and behavior. It specifies the fields returned and the external sources searched. It could mention the response format or error handling, but for a simple fetch tool, this is sufficient.

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 schema already provides 100% coverage for the single 'url' parameter, including a descriptive example. The description adds no extra semantic detail about the parameter beyond what the schema gives, so the baseline score of 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?

The description uses a specific verb ('Fetches') and clearly names the resource ('ArXiv paper') along with the exact data fields (title, authors, abstract, submission date). It also adds the secondary behavior of searching Papers With Code and GitHub, which distinguishes it from sibling tools like get_repo_quickstart.

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 implies the tool is for retrieving a paper brief, but it does not explicitly state when to use this tool versus alternatives, nor does it provide any exclusion criteria. Usage context is implied by the tool name and description but not explicitly guided.

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