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

The description claims the operation is 'Additive' (non-destructive), which contradicts the annotation destructiveHint: true. This creates confusion about the tool's effect.

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?

The description is very concise with two short sentences, no fluff. However, it could be structured more explicitly (e.g., separating behavior from API info).

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 tool with one parameter and no output schema, the description covers the core behavior. However, it lacks details on return values, errors, and idempotency, which are relevant for an AI agent.

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 100% and the uuid parameter description is clear. The description adds REST API context but does not enhance parameter meaning beyond the schema.

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 clearly states the verb 'Marks as permanently stored' and the resource 'file', distinguishing it from siblings like delete_file. It also includes the REST API endpoint for precise identification.

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 description implicitly indicates when to use (to prevent deletion of unstored files) but lacks explicit guidance on when not to use or alternatives like uploadcare_delete_file or uploadcare_get_file.

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