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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so safety is covered. The description adds real context beyond that: page size (100 per page) and the underlying endpoints (GET /projects.json vs /projects/closed.json), which explains why the status parameter changes the target resource.

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 tight sentences with no filler; the returned-field list and default status come first, endpoint mechanics last. Slightly dense but every clause carries information.

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?

No output schema exists, and the description compensates by naming the fields returned and the pagination model, plus the status-driven endpoint switch. An agent can call it correctly; only ordering/sorting behavior and next_page handling detail (which lives in the schema) are absent.

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 both parameters are already documented in the schema (page default 1, status enum open/closed). The description restates the same defaults and page size rather than adding format or edge-case detail, 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 ('List Tick projects') and enumerates the salient returned fields (budget in hours or money, billable flag, client_id, owner_id), which clearly separates it from tick_list_clients, tick_list_entries and tick_list_tasks. It does not explicitly contrast with any sibling, but the resource noun alone is unambiguous.

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 gives the default behavior ('Open projects by default; status=closed for closed ones'), which tells the agent how to reach closed records, but never says when to prefer this over tick_get_project or how it relates to the other list tools. Usage is implied by the verb rather than stated.

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