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

Annotations already declare readOnlyHint=true, destructiveHint=false and idempotentHint=true, and the description reinforces this by stating it 'opens nothing by itself' and only returns step-by-step guidance. This crucially resolves the tension between a 'reply' name and a read-only annotation, telling the agent the actual mutation must happen via cotlet_browser_* tools. It stops short of describing the exact shape or length of the returned steps.

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 explanation is front-loaded and efficient, but the closing sentence about Gorgias's REST API and an open-beta MCP server, including a 'checked 17 Oct 2026' timestamp, is tangential and does not tell the agent what to do differently. Trimming that would sharpen the definition.

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 no-parameter tool with no output schema, the description does the needed work by characterizing the return value conceptually ('step by step: screens, buttons, fields') and pointing to the execution path. The only gap is that it does not fully specify the deliverable's format or detail level.

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 are zero parameters, so the baseline is 4 and there is nothing for the description to disambiguate. No parameter-level gaps exist because the input schema is empty by design.

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 specific verb and resource ('Reply to ticket in the user's own Gorgias account') and then clarifies what the tool actually does: it 'Returns how to do it in Gorgias step by step (screens, buttons, fields) and opens nothing by itself.' That resolution of the ambiguous 'reply' name is helpful, though the true function (returning instructions rather than replying) only becomes clear after reading the second sentence.

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 follow-up path ('then do it with the cotlet_browser_* tools in the user's Gorgias Cloud Browser'), which implies usage. But it never states when to choose this over the official REST API or the Gorgias-hosted MCP server it mentions, so the agent is left to infer which route to take; the API/MCP sentence reads as context without routing guidance.

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