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

Annotations already state readOnlyHint=false, destructiveHint=false, openWorldHint=false, so the mutation profile is known. The description usefully adds that it persists data and emits two concrete artifacts (shareable HTML, downloadable PDF), but says nothing about whether re-rendering an existing audit_id overwrites prior output, where artifacts are stored, or what access is required.

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?

Two sentences, no filler: the primary action and its outputs come first, and the negative scoping clause follows. Every clause earns its 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?

There is no output schema, and the description never says what the call returns — a URL, an HTML blob, a PDF link, or just a confirmation of storage. For a tool whose whole value is producing artifacts, that missing return contract is a real gap against a rich nested input schema.

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%, including a full nested description of the report object and the context parameter, so the schema carries all parameter meaning. The description adds nothing about audit_id's provenance (a completed audit) or how report fields map to the rendered output, so 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?

Names a specific pair of actions (store a structured audit report; render HTML + PDF) against a clearly identifiable resource. The 'BYO-Claude' qualifier signals the report is authored elsewhere, which distinguishes it from generation-side siblings like start_mobile_audit, though it never names a sibling to route away from.

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 clause 'This does not call a QualityMax model' implicitly tells the agent this is not the tool for producing an audit, only for persisting/rendering one. However, no explicit when-to-use, prerequisites (must the audit be completed?), or alternatives such as parse_mobile_audit_report or share_mobile_audit are given, so routing must be inferred.

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