reply_to_ticket

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

The annotations already communicate that this is a non-read-only, non-idempotent mutation, and the description largely repeats that by saying 'Post'. It does not disclose side effects like whether the reply is visible to the customer, whether an email notification is triggered, or whether replies can be edited or deleted.

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 description is a single, front-loaded sentence with no filler words. Every word earns its place, and the core action is immediately understandable.

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, the description provides enough to make a basic call with ticket_id and message. However, with no output schema, no param descriptions, and no side-effect disclosure, it leaves some important context incomplete for more nuanced decision-making.

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 0%, so the description carries the burden of explaining the parameters, but it only adds 'existing ticket' to ticket_id and implies message is the reply body. It does not explain the expected format, meaning, or constraints of either parameter beyond what the property names already suggest.

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 uses a clear action ('Post a reply') and a specific resource ('existing ticket'), so an agent can understand the tool's core operation. It also distinguishes this from create_ticket by emphasizing the ticket already exists, though it does not explicitly name any sibling alternatives.

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?

There is no guidance on when to use this tool versus alternatives such as create_ticket or list_ticket_replies. The phrase 'existing ticket' implies one prerequisite, but there is no explanation of whether tickets must be open, assigned, or otherwise allowed replies, so an agent gets little routing help.

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