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

Annotations already declare readOnly, idempotent, and non-destructive, so the safety profile is covered. The description still adds meaningful behavior: the tool itself performs no action, produces step-by-step screen/button/field guidance, and hands off execution to the browser tools. The one weak spot is the unexplained official-API note, which adds noise rather than clarity.

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 point (returns steps, performs nothing, then use browser tools) is front-loaded, but the sentence carries padding: the ChatGPT/Claude/any-AI-agent audience list and the cryptic 'Brand24's official API: Yes.' fragment do not help an agent decide or act.

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 parameterless, side-effect-free instruction tool with no output schema, the description covers what an agent needs: what is returned and what to do next. The only gap is the unresolved official-API mention, which leaves a routing question open.

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 is nothing for the description to disambiguate and the baseline applies. Nothing in the text misleads about inputs.

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 makes clear this is an instruction-returning tool, not a mutation: it 'Returns how to do it in Brand24 step by step (screens, buttons, fields) and opens nothing by itself.' That specific output statement goes well beyond the name, which alone would suggest a write action. It stops short of 5 because the name/title framing ('Add mention manually') pulls in the opposite direction and must be corrected by the body text.

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 real workflow guidance: get the steps here, then execute them with the cotlet_browser_* tools inside the user's Brand24 Cloud Browser. However, no alternative is named or excluded, and the trailing 'Brand24's official API: Yes.' is ambiguous — an agent cannot tell whether it means an API path is preferred over this browser route.

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