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

Annotations already declare destructiveHint=true, so the mutation profile is covered. The description adds the closed-ticket precondition but says nothing about permissions, what state changes result, or what happens if the ticket is already open; the API endpoint restatement adds little behavioral value.

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 short, front-loaded sentences with zero filler; the action and its precondition come first, with the endpoint as a secondary 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?

For a single-parameter state-change tool with annotations covering the destructive hint and no output schema to explain, the description is nearly sufficient. Only the precondition context and error behavior (already-open ticket) are left implicit.

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?

Schema description coverage is 100% and the single ticket_id parameter is documented in the schema as an integer id. The description adds no format, range, or sourcing detail beyond echoing {ticket_id} in the path, so the baseline 3 applies.

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 gives a precise verb+resource ('Reopen a closed ticket'), which is inherently distinguishable from the sibling trengo_close_ticket. It stops short of explicitly naming that sibling or any other alternative, so it is clear but not fully differentiated.

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 states the precondition that the ticket must be closed, which implies when the tool is applicable, but gives no explicit when-to-use guidance, no exclusions, and does not route the agent to any alternative tool.

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