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

Annotations already declare readOnlyHint=false, destructiveHint=false, and openWorldHint=false, so safety posture is covered. The description usefully adds accepted formats (PDF, Word, text or image) and the destination profile, but omits whether an upload replaces an existing resume or how it interacts with the separate delete_my_resume tool.

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 that states the action, the source, the destination, and the required parameter with zero filler.

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 annotations covering the safety profile, the description covers the essential call mechanics. It is only short of fully complete because replacement/duplicate-resume behavior for a mutation tool is left unstated.

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%, so the baseline is 3, and the description earns an extra point by explicitly directing the agent to pass the attached file as resume_file, disambiguating it from the other three optional parameters (mime, filename, content_base64).

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?

The description states a specific verb (Save), resource (the resume the user attached in chat), destination (their Worklittle profile), and downstream purpose (so it can be used to apply). This clearly distinguishes it from get_my_resume and delete_my_resume siblings.

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?

It implies the usage context (a file attached in chat, to be used later for applications) and names the primary parameter to pass. However, it never states when to use this versus get_my_resume or what to do if a resume already exists, so the guidance remains implicit.

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