generate_trend_chart

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

With no annotations, the description carries the burden of behavioral disclosure. It states the tool outputs PNG images, which is useful. However, it fails to mention important aspects like error handling, performance constraints, whether it is read-only, or any required permissions. The description is adequate but not thorough.

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 with two sentences. The first sentence efficiently conveys the purpose and chart types, the second adds output format. Every word is necessary, and no fluff exists.

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 tool's simplicity (2 parameters, no output schema, no nested objects), the description is largely complete. It explains functionality and output format. However, it omits details on error handling or result interpretation, which could be useful but not critical for a straightforward chart generator.

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 50% (paper_ids has description, chart_type lacks description but has enum). The description compensates by listing the chart types explicitly, aligning with the enum values. This adds meaning beyond the schema. However, it provides no extra detail on paper_ids beyond 'Papers to visualize'.

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 the tool generates publication trend charts, listing specific chart types (yearly counts, citation distributions, source breakdown, quartile distribution) and outputs PNG images. The verb 'generate' and resource 'publication trend charts' are specific, and the chart types distinguish it from sibling tools like generate_citation_network or generate_comparison_table.

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 provides no guidance on when to use this tool versus alternatives. Among sibling tools like generate_citation_network or generate_comparison_table, there is no indication of when one is preferred over the other, nor any mention of prerequisites or limitations.

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