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

The annotations already indicate this is a non-read-only, non-idempotent, non-destructive operation, and the description adds that the result is queued for scoring. However, it does not explain duplicate-confirm behavior, what deviceToken authorizes, or what happens on failure. With annotations covering the safety profile, this is adequate but incomplete.

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 two tight sentences with no wasted wording. The main action is front-loaded, followed by the caller restriction.

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 output schema means return values need not be described, and annotations cover key safety traits. Still, the definition omits parameter semantics and does not address non-idempotent duplicate confirmation, which are meaningful gaps for a mutating recorder operation.

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 carry the burden for parameter meaning. It does not mention attemptId or deviceToken at all, leaving their roles to be inferred only from their names and UUID formats. This is a clear gap for a tool with two required parameters.

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 states a specific action and outcome: confirm the upload and queue it for scoring. It also narrows the caller to the speaking recorder card, which helps distinguish it from broader recorder tools. It does not explicitly compare against siblings such as recorder_start or recorder_result.

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 phrase 'Called by the speaking recorder card only' gives a clear caller restriction and usage context. It does not name alternatives or explain when not to call it, but the caller constraint is strong enough to guide invocation.

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