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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is covered. The description adds the tenant-private scoping detail but says nothing about permanence, whether associated data is destroyed alongside the upload, or authorization requirements.

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?

One short sentence, front-loaded with the verb and resource. Nothing is wasted, though the brevity leaves no room for the routing or consequence information an agent would benefit from.

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 single-parameter destructive delete whose annotations already carry the safety profile and whose schema carries the ID pattern, this is close to complete. The main remaining gap is whether deletion is permanent or recoverable, which the annotations cover only implicitly via destructiveHint.

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?

The description adds no meaning for upload_id beyond the schema, which conveys only a pattern (^[a-f0-9]{32}$) with no description text. With a single parameter and 0% schema description coverage, a 3 is the minimum-viable result – the description neither explains where the ID comes from nor what form it takes.

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 (tenant-private upload), which distinguishes it from the sibling upload_* tools that create rather than remove uploads. The 'tenant-private' qualifier narrows scope, though no explicit sibling is named for contrast.

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 clause 'that is no longer needed' implies a usage condition but gives no explicit when/when-not guidance, no prerequisites, and names no alternative. In a family with three upload_* creators, an agent gets only a weak hint about when deletion is the right move.

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