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

Annotations declare readOnlyHint=false, destructiveHint=false and openWorldHint=true, so mutation semantics and safety are partly structured. The description adds real context beyond that: a state precondition (won't close already-resolved tickets) and that identity is derived from the visitor pass, so no caller identity argument is needed.

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?

Three short sentences, front-loaded with the action and trigger, followed by the negative boundary case and the identity note. Every sentence carries information; no filler.

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 two-parameter mutation tool with no output schema, the description covers purpose, trigger, exclusion, and identity source. It leaves the observable result of closing (and whether it is reversible) implicit, which annotations partially mitigate.

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%, so both parameters (ticket_id and reason) are already documented in the schema, including the provenance of ticket_id. The description adds nothing about the optional reason field or accepted values, 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?

States a specific verb and resource (close a feedback ticket) scoped to the current visitor's ticket, which cleanly separates it from create_feedback_ticket, list_my_feedback, and get_feedback_thread. The closing condition and the exclusion of already-resolved tickets make the operation unmistakable.

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?

Explicitly states when to use it ('when they say it is no longer relevant or they worked it out') and when not to ('a ticket the team already finished ... is NOT closed — say so instead'). It stops short of naming a sibling tool to use in that case, leaving the alternative implied rather than specified.

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