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

The annotations only supply destructiveHint=true and a title, so the description adds real value with PATCH semantics ('Only passed fields change') and the is_complete=true/false effect, which is not derivable from the hint alone. However, it omits permissions/auth needs, what happens to fields left unset versus cleared, and any reversibility note for a mutation tool.

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 tight sentences with the core operation front-loaded, no padding. The trailing 'LACRM: EditTask.' is an internal API mapping that contributes little for an agent, a minor wasted clause.

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 single-required-parameter patch tool with no output schema, the description covers what changes (only passed fields) and the completion toggle, which is the operationally critical information. It is slightly thin on failure modes and return shape, but those are minor given the schema coverage.

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?

With 8 parameters and 75% schema description coverage, the schema already documents most parameters (task_id, contact_id, calendar_id, assigned_to, due_date, is_complete). The description restates the is_complete boolean meaning and the partial-update rule but adds no format, validation, or inter-parameter detail 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 and resource ('Update a task') and goes further by naming the completion/re-opening payload semantics, which is more than a tautology. It is implicitly distinguishable from lacrm_create_task and lacrm_list_tasks by the edit verb, but it never explicitly contrasts itself with those siblings.

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?

Usage is only implied: the agent infers this is the tool for changing an existing task and for toggling completion. No alternative is named (e.g., find a task_id via lacrm_list_tasks, or use lacrm_create_task for new tasks), and there are no preconditions or exclusions stated.

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