reply_to_ticket

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It does disclose the key side effect that the reply is visible to the requester, but it does not mention other potential behavioral traits like email notifications, permission requirements, or effects on ticket status, leaving some gaps.

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 exceptionally concise: one purpose sentence followed by a compact Args list. Every word earns its place, with no repetition of schema types or unnecessary 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?

The tool is simple with only 3 parameters, an output schema is present, and the description covers purpose, visibility semantics, and all parameters. Nothing essential is missing for an agent to invoke it correctly.

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 must fully compensate for the schema's lack of explanations. It does this exceptionally well: ticket_id is identified as the ticket ID, body is described with HTML support, and cc_emails is marked optional with its purpose stated.

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 the specific verb 'Reply' with the resource 'a ticket' and adds the crucial scope 'visible to requester,' which distinguishes this from internal note-taking tools like add_ticket_note. It clearly states what the tool does.

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?

The phrase 'visible to requester' provides clear context that this tool is for public replies, implying it should be used when the customer should see the response. However, it does not explicitly name alternatives or state when not to use it, such as for internal notes.

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