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

Annotations already declare readOnlyHint=true, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds the task-type enumeration and the underlying endpoint, but says nothing about pagination behavior or result volume limits beyond what the schema states.

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 compact sentences with the scope and filters front-loaded; the trailing 'GET /tasks' endpoint note adds little but costs almost nothing. No wasted prose.

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 7-parameter, no-required-argument list tool with no output schema and read-only annotations, the description covers scope and filters adequately. Pagination and default page size are left to the schema, which handles them well.

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 all seven parameters are already documented with formats, defaults and enum values. The description restates the filter categories (state, date range, user) at a high level without adding syntax or semantics beyond the schema.

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 (List) and resource (tasks), and usefully expands 'tasks' to cover to-dos, calls, emails and visits, which is non-obvious domain knowledge. It doesn't explicitly contrast with get_task or list_calendar_events, but the resource 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?

The filter list ('open/closed state, due-date range and responsible user') implies when the tool is useful, but there is no explicit guidance on when to prefer it over get_task for a single item or search_all for cross-entity lookup.

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