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

With readOnlyHint, idempotentHint and non-destructive already declared, the description adds the genuinely important disclosure that the call has no side effects and "opens nothing by itself" - it is not a live read of client texts. It also explains why browser automation is required: AestheticsPro sells API access only as custom Enterprise work and publishes no self-serve key page (with a checked date). Remaining gaps are minor (no statement of output length or form beyond "step by step").

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?

Purpose and the crucial "opens nothing by itself" caveat are front-loaded, followed by the companion-tool routing and the API rationale. The Enterprise-plan pricing and check-date sentence is long but earns its place by explaining why the browser path is necessary. Minor drag from the embedded quotation and date detail.

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?

There is no output schema, so the description must convey what comes back - and it does ("step by step (screens, buttons, fields)") plus what to do next with cotlet_browser_*. For a zero-parameter, read-only guidance tool, an agent has everything needed to call it correctly and to interpret the result.

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 no parameters, so there is nothing for the description to disambiguate; the baseline for a zero-parameter schema applies. The description correctly signals that behavior depends only on the authenticated AestheticsPro account rather than on any 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 names a concrete verb and resource ("Read client texts in the user's own AestheticsPro account") and then corrects the expectation by stating it "Returns how to do it in AestheticsPro step by step... and opens nothing by itself." This tells an agent it is a procedural-guidance tool rather than a data-returning one, and it points at cotlet_browser_* for the actual work. The only friction is that the name/title imply a direct read while the body delivers instructions, a gap the text closes only after the first clause.

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 a clear two-step workflow: call this to learn the screens/buttons/fields, then execute with cotlet_browser_* tools in the AestheticsPro Cloud Browser. It does not explicitly state when NOT to use it or name cotlet_browser_read as the alternative, so the agent must infer that from the general routing sentence rather than an explicit exclusion.

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