upload_iso

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

Annotations already declare this is a non-read-only, non-destructive, open-world operation, so the safety profile is covered. The description adds only the entitlement note ('Available to clients'); it says nothing about persistence of the download, size limits, or what happens if the URL is unreachable.

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 short sentences, action front-loaded, with no padding. The '(iso/upload)' endpoint aside is arguably redundant, which keeps it just short of a 5.

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 simple three-parameter mutation with full schema coverage and a safety-carrying annotation set, the essentials are present. What is missing is sibling disambiguation versus 'add_iso_image' and any note about the asynchronous upload/download nature of a URL-based ingestion.

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 'url', 'name', and 'confirm' are already documented in the schema. The phrase 'by URL' lightly reinforces the url parameter but adds no format or syntax detail beyond it; baseline 3 is appropriate.

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 names a specific verb and resource ('Upload a new ISO image') and clarifies the mechanism ('by URL'), so the action is unambiguous. It does not, however, differentiate itself from the sibling 'add_iso_image', leaving the agent to guess which one adds an existing library image versus ingests a new one.

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?

'Available to clients' is the only usage condition given, and it is an entitlement hint rather than a when-to-use rule. There is no guidance on when to prefer this over 'add_iso_image', nor any prerequisite about the URL being reachable.

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