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

Annotations already declare destructiveHint=true, idempotentHint=false, and readOnlyHint=false, so the safety profile is covered structurally. The description adds useful ownership scoping ('stored for your token, uploaded or generated'), clarifying which files are eligible, but it says nothing about irreversibility or error behavior on missing names.

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?

A single front-loaded sentence with no waste; the action and scope appear immediately.

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 destructive operation with no output schema and an undocumented parameter, the description covers ownership scope but omits the identifier semantics and confirmation/error expectations. It is adequate but leaves key call-correctness details unaddressed.

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?

With one required parameter at 0% schema description coverage, the description must compensate, but it never explains whether 'name' is a filename, an ID, or a path-derived label. The schema only constrains length (1-70), leaving the agent to guess the identifier format.

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 (delete) and resource (one stored PDF), and scopes it to files belonging to the caller's token, uploaded or generated. This clearly differentiates it from siblings like pdf_info and pdf_files, which read rather than remove.

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 phrase 'Delete one PDF' implies single-file granularity, but nothing tells the agent when to choose this over alternatives or what to do first (e.g., list with pdf_files to obtain the name). No prerequisites or exclusions are given.

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