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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false and openWorldHint=false, and the description is consistent with all of them ('opens nothing by itself'). It adds real value beyond the annotations by disclosing the return content (screens, buttons, fields) and the intended follow-up tool family, though it says nothing about freshness, rate limits or cost.

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 key clarification (returns a guide, opens nothing) is front-loaded in the first two sentences, and the third sentence handles API/MCP routing. The 'checked 17 Oct 2026' detail and the API aside are slightly tangential but do earn their place by steering the agent away from the hosted MCP server.

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, read-only guidance tool with no output schema, the description covers what it returns, that it performs no action, and what to do next. The remaining ambiguity is how the specific ticket is targeted and whether the guide is generic or context-specific.

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?

With zero parameters and 100% schema coverage, there is nothing for the description to disambiguate, which is the baseline-4 case. The only residual gap is that the description never explains how the target ticket is identified given that no ticket ID parameter exists.

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 and resource (reply to a ticket in the user's Accelo account) and immediately clarifies the actual output: a step-by-step guide of screens, buttons and fields rather than a performed action. It does not explicitly distinguish itself from the similar-sounding accelo_update_ticket sibling, so it stops short of a 5.

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 clear workflow guidance: call this first to get the how-to, then execute with the cotlet_browser_* tools in the user's Accelo Cloud Browser. It also sketches why not to rely on Accelo's hosted MCP server (built for questions about data, not actions). No explicit exclusions against the accelo_* write siblings are given.

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