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

Goes well beyond the annotations by declaring that nothing is persisted ('no file, no counter, and no log line'), that extra fields (note, url, headers) are ignored and urls are not fetched, and that the server does not infer platform from the Server header. This meaningfully clarifies the no-side-effect profile, though some sentences ('Nothing is for sale') add noise rather than behavioral clarity.

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 core constraint is front-loaded, but the prose is choppy and uneven: 'The result is id, outcome, and stored false' is awkward, and sentences like 'This server does not guess the platform from the Server header' and 'Nothing is for sale' do not clearly earn their place.

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?

With an output schema present and full annotation coverage, the description supplies enough behavioral context (no writes, extra fields ignored, url not fetched) for an agent to call it confidently. Only the missing usage routing keeps it from being fully complete.

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 coverage is 100% with both parameters documented via enums, so the schema carries the semantics. The description restates the outcome values and notes that unused fields are ignored, but adds no syntax or format detail beyond the schema, matching the baseline 3.

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?

States a specific verb and resources: 'Report one finding id and one outcome,' and names the three valid outcomes. The function is clearly distinct from analyze_headers, explain_finding and get_fix, though the description never explicitly differentiates itself from them.

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?

There is no when-to-use guidance, no prerequisites, and no mention of the sibling tools or when one should prefer this over them. The agent must infer context from the tool name alone.

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