Get a backup download URL

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

With no annotations, the description carries the full burden, and it does disclose one important trait: the URL is one-time signed, implying single-use/expiring credentials. It does not say how long the URL lasts, whether generating it consumes/locks anything, or what auth is required for the panel/API-key overrides.

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, both front-loaded and free of filler; the result-handling hint follows the purpose statement in the right order. 'Outside the model context' is slightly jargon-y but not wasteful.

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 tool whose entire output is a URL, the description never says what the response looks like (raw URL string vs. an object field), and there is no output schema to fall back on. With 6 parameters, no annotations, and two undescribed required params, the description leaves material gaps for correct invocation.

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 coverage is 67%, and the two required parameters (server, backup) have no descriptions in either the schema or the description. The description says nothing about what 'backup' identifies or how 'server' relates to 'panel'. The undocumented required fields are exactly the ones an agent must supply.

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 and resource: returns a one-time signed URL to download a backup. An agent can distinguish it from backup_get (metadata) and files_download_url (files). However it does not explicitly name or contrast with those siblings, so it stays at 4 rather than 5.

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?

'Fetch it outside the model context' is a usable operating instruction for what to do with the result, which implies the intended workflow. But there is no explicit statement of when to choose this over backup_get or backup_restore, nor any prerequisite (e.g. backup must exist, must be unlocked).

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