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

With no annotations, the description carries the full behavioral burden. 'Patch' implies a partial mutation, but the description does not say whether unspecified fields are preserved, whether the whole automation is replaced, what permissions are required, or what the response contains.

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?

It is a single short sentence with the verb front-loaded and no padding. However, the parenthetical adds little informational value, so brevity comes at the cost of under-specification rather than true efficiency.

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 mutation tool with no annotations, no output schema, and a nested free-form `fields` object with additionalProperties, the description is far too thin. An agent cannot confidently construct a call or predict effects from this text.

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 explain both parameters. It only offers the opaque phrase 'ScheduleUpdate fields', which hints that `fields` is a ScheduleUpdate payload but gives no field list, format, or meaning for `schedule_id`, and says nothing about the free-form nested object.

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 names a specific verb ('Patch') and a resource ('an automation'), but 'automation' is a loose synonym for the tool's actual schedule resource and the parenthetical 'ScheduleUpdate fields' merely echoes a data type name. It does not distinguish the tool from siblings like schedule_create, schedule_delete, or schedule_import.

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?

There is no guidance on when to use this tool versus schedule_create, schedule_import, or schedule_delete, and no mention of prerequisites such as ownership or permissions. The agent is left to infer usage entirely from the name.

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