video

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

No annotations are provided, so the description carries the full behavioral burden. It hints that rendering is long-running and asynchronous, but never says whether the call blocks, how to poll, what identifies a given render, or what happens on completion or failure. For an async job tool this is a substantial gap.

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?

A single compact sentence with no filler. It is front-loaded, though the compression comes partly at the cost of clarity rather than through efficient wording.

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?

With no annotations, no output schema, and an empty input schema, the description is the only source of information, and it leaves the core mechanics of an asynchronous render workflow unexplained. An agent cannot reliably know how to invoke or poll it.

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 schema declares zero parameters, so there is nothing for the description to disambiguate; baseline 4 applies. No parameter meaning is lost because none exist.

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 two loosely-defined operations ('turn a recording into a film' and 'check on one that is rendering'), so the agent knows this tool starts renders and reports status. However, 'film' is imprecise, and with zero parameters there is no stated way to tell the two modes apart or to reference which render to check. It distinguishes itself from the sibling 'record' only by implication.

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?

No when-to-use guidance, no prerequisites, and no mention of alternatives such as 'record' or 'measure_frames'. The agent must infer that the same tool both initiates and polls a render, with no instruction on how to select either behavior.

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