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

The readOnlyHint annotation already covers the safety profile, so the bar is lower. The description adds only the underlying REST endpoint (GET /tickets/{id}), which confirms a plain read but discloses nothing about 404 behavior, rate limits, or the shape/size of the payload.

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 sentences, strictly front-loaded with the purpose and the id key. The REST endpoint reference is mildly redundant given the tool name but costs little.

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 low-complexity single-item read whose annotations cover safety, this is near-adequate. With no output schema, however, an agent gets no hint about returned fields or error cases, leaving a modest gap.

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% – both id and the comma-separated include options (conversations, requester, company, stats) are fully documented in the schema. The description adds nothing about the include parameter or id format, 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?

"Get a single ticket by id" states a specific verb (get) and resource (single ticket) with the retrieval key. It implicitly separates itself from list_tickets/search_tickets by saying "single ... by id", though it never names those siblings explicitly.

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?

No when-to-use guidance is given beyond the trivial implication that you need a known id. It does not tell the agent when to prefer this over freshdesk_search_tickets or freshdesk_list_tickets, nor what to do on a miss.

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