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

The 'Nothing is saved' clause directly reinforces the readOnlyHint=true annotation and tells the agent the result is ephemeral until save_style_guide is called — useful workflow context beyond the annotations. It does not, however, describe return format or any generation constraints, so it adds value but is not exhaustive.

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, zero waste. The core action and its contents come first, with the non-persistence caveat and next-step handoff following. Every clause 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?

For a single-optional-param generation tool with no output schema, the description covers what is produced, that nothing persists, and the follow-up path. The only minor gap is that it doesn't hint at the return shape of the generated guide.

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?

There is only one optional parameter (toneHint) with 100% schema description coverage, so the schema already carries its meaning. The description mentions generating from the business profile but does not clarify how toneHint influences output, so it adds nothing beyond the schema — baseline 3.

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 (generate) and resource (content style guide), then enumerates the outputs it contains (tone of voice, dos, don'ts, emoji & hashtag policy). It also names the sibling save_style_guide as the persistence counterpart, so an agent can distinguish it from that tool immediately.

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?

Explicitly describes the workflow: generate, show the user, apply edits, then persist with save_style_guide. This names the alternative tool and the condition that routes to it, leaving nothing to inference.

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