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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=false, so the safety profile is covered elsewhere. The description contributes the one genuinely new behavioral fact, that the result is an SVG diagram, but says nothing about generation cost, completeness of output, or whether missing optional inputs degrade the figure.

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?

It is a single short line with no filler sentences. The only waste is the opening phrase repeating the tool name and title, but the use-case triggers are front-loaded and immediately readable.

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?

For a read-only generator with five well-documented parameters and no output schema, the definition is minimally adequate. It could add more by explaining that optional clinical fields populate the roadmap stages, but nothing critical for correct invocation 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%, with all five parameters individually documented (title, outcome, sample_size, intervention, study_design), so the schema carries the load. The description adds no meaning about how these fields feed the roadmap layout or which are optional, 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?

The description names the artifact ('研究技术路线图') and adds that it is an SVG roadmap, which is more than the title alone gives. But there is no verb and the first phrase merely repeats the tool name/title, and it never distinguishes itself from diagram-producing siblings such as consort_flowchart, prisma_flowchart, or act_material_mermaid.

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?

Three usage triggers are listed (user wants a technical roadmap, a flowchart, or a research route for a grant proposal), which implies when to call it. There are no exclusions and no named alternative for related flowchart requests, so the agent must infer the boundary itself.

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