pix_upgrade_capture

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

Annotations already establish destructiveHint=true, idempotentHint=true, and readOnlyHint=false. The description adds a key behavioral detail beyond those annotations: without a destination, the source file is overwritten in place. This warns the agent about the destructive default and clarifies the destination parameter's role. It does not further explain idempotency or side effects, but the most critical trait is disclosed.

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 sentences with no fluff. The primary action is first, and the critical overwrite behavior is front-loaded in the second sentence. Every word earns its place.

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?

The tool is relatively simple with one required parameter and an output schema, so return values are already handled. However, the optional timeout_seconds parameter is unexplained, and the description does not clarify whether destination is a file path, directory, or how the upgrade process reports progress/errors. It is adequate for basic usage but incomplete for fully informed 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 description coverage is 0%, so the description must compensate. It indirectly explains the destination parameter ('Without a destination') and the source by name in the tool title, but timeout_seconds is entirely undocumented and no parameter is described with enough detail for an agent to know expected formats, constraints, or behavior. This is a significant gap at zero schema coverage.

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 ('Upgrade'), a specific resource ('GPU capture file'), and the target format ('latest PIX format'). This is unique among the large sibling list—no other tool performs file upgrading—so an agent can clearly distinguish it from the other operations.

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 gives no explicit guidance on when to use this tool versus alternatives, and no sibling performs a similar upgrade operation. The overwrite-in-place behavior implies a choice between destination and in-place, but there is no direct statement about prerequisites, when upgrading is needed, or when to avoid it.

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