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

Annotations already declare readOnly, idempotent, closed-world, non-destructive, and the description adds useful context: this returns instructional text/recipes in English, not data mutations. It also flags 'Arguments: {}', confirming there is nothing to supply, which is real behavioral value beyond the annotations. It does not describe the response shape, though the lack of an output schema means that is a minor 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?

The core purpose sentence is front-loaded, but the parenthetical recipe enumeration is long and dense, reading as a run-on list. It is informative rather than wasteful, yet the sentence could be split for easier scanning.

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 zero-parameter reference/instruction retrieval tool, the description tells the agent what content it yields, what topics it covers, and when to invoke it. The main missing piece is a hint about the form of the returned instructions (e.g., step-by-step guide vs. JSON), which matters since there is no output schema.

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?

Zero parameters, which is the baseline-4 case. The description explicitly states 'Arguments: {}', aligning with the empty schema and removing any doubt about needing input.

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 what the tool returns: detailed recipes of the video flow, with an explicit enumeration of covered topics (script rules, structure, montage recipes for UGC/app/show-your-work/place-visit/making-of/event, plan_video shape, operations path). It does not differentiate itself from related reference tools like kelpo_operations_catalog, kelpo_camera_moves_catalog, or kelpo_voice_recording_guide, so it falls short of a 5.

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?

It gives clear trigger conditions — read it when the server instructions point to a recipe, or first when the client does not surface server instructions. That is an explicit, actionable when-to-call rule. It stops short of naming alternatives or saying when not to call it.

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