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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), yet the description still adds real behavioral context: it plans filenames only, returns zero-based include/exclude/skip indexes with reasons, and is explicitly not an upload permission. That is genuine value beyond the structured hints, though it stops short of richer detail such as size or rate limits.

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?

Three tight sentences with no filler; the usage trigger is front-loaded and the example payload is inline where it is needed. Embedding a full JSON snippet in prose is slightly awkward but it earns its space by anchoring the 'entries' shape.

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?

An output schema exists, so return values need not be explained, yet the description helpfully mentions the include/exclude/skip indexes and reasons. Combined with annotations and the single-parameter schema, an agent has nearly everything it needs; only the ambiguity around what 'permitted' means and the lack of sibling routing keep it short of full completeness.

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 0%, so the description must carry the burden — and it does partly, supplying a concrete example payload and stressing that paths must be permitted, relative filenames paired with kinds. It does not explain why 'kind' matters to include/exclude decisions or what 'permitted' is relative to, so the compensation is incomplete.

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?

Specific verb+resource: prepares a user-authorized repository file handoff to another agent or reviewer, and explicitly delimits scope as 'filename-only planning'. The closing clause ('not a content security scan or permission to upload') separates it from the sibling repository_safety_preflight, so an agent can distinguish them without opening schemas.

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?

Gives a clear when-to-use trigger ('when preparing a user-authorized repository file handoff to another agent or reviewer') and a worked call example with the entry shape. It states constraints ('permitted relative filenames and kinds only; never file contents, secrets or URLs') but never names the sibling tools as alternatives, so routing is implied rather than explicit.

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