Outline a PowerPoint file

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

With no annotations, the description carries the full behavioral burden. It usefully discloses the return shape (title, body text, speaker notes, JSON) and implies a read-only extraction, but says nothing about failure modes (password-protected or malformed files), whether remote http(s) sources are fetched, size limits, or whether the file is modified.

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 sentence that front-loads the transformation, enumerates the extracted elements, and names the output format. No filler, nothing redundant with the schema.

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 one-parameter extraction tool with no output schema, the description adequately covers what is returned. The remaining gap is the absence of any note on error conditions or remote-source behavior, which is minor given the tool's simplicity.

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?

Only one parameter, and the schema already documents it fully (100% coverage) as a local path or http(s) URL. The description adds no extra meaning about the source argument, so the baseline 3 for a fully documented schema 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?

States a specific transformation with a clear input (.pptx) and a clearly different output shape (slide-by-slide JSON outline with titles, body text, speaker notes), which naturally separates it from the thumbnail and web-preview siblings. It stops short of naming or explicitly contrasting those siblings, so differentiation is inferable rather than stated.

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 guidance on when to use this tool versus pptx_thumbnail or pptx_web_preview, nor any prerequisites such as file accessibility or supported formats. The agent must infer usage entirely from the one-line purpose.

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