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

With no annotations and no parameters, the description carries the full burden, yet it only says the tool provides 'comprehensive guidance.' It does not describe what the guidance covers, its format, or its length, so it adds little behavioral context beyond the tool name.

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 efficient sentence that front-loads the action and resource. Nothing is wasted, though it is arguably too terse to be maximally useful.

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 documentation retrieval tool with no output schema, the description is minimally adequate. It does not say what the guide contains or how it differs from the several other prompt/guide tools in the sibling list, leaving a real gap.

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 tool takes zero parameters, so there are no parameter semantics to document. The baseline of 4 applies; the description correctly implies a no-argument retrieval call.

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 verb (Get) and resource (guidance on AI image generation prompts), which is clear. However, it does not distinguish itself from close siblings like get_video_prompt_guide, get_creative_tips, or get_usage_guide, so an agent must infer the difference from the name alone.

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?

There is no when-to-use guidance, no prerequisites, and no mention of alternatives such as get_video_prompt_guide or get_remotion_layer_guide. The agent gets no signal about which guide to fetch for a given task.

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