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

Annotations already declare destructiveHint=true, openWorldHint=true, and idempotentHint=false. The description adds concrete real-world context: activation starts runs from tracked events, and with a live number it texts real people. That is valuable behavioral disclosure beyond the annotations, though it does not address permissions or error behavior.

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 are front-loaded with the action and consequence. Every phrase earns its place: the first states what it does, and the second flags the real-world side effect. There is no filler.

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 one-parameter activation tool with rich annotations, the description covers the action and its main consequence. It could say more about the return value or error conditions, since there is no output schema, but the essential behavioral context is present. This is nearly complete for the tool's complexity.

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 coverage is 100% and the only parameter is 'id' with its own description. The tool description does not add any meaning about the id beyond what the schema already provides. Baseline 3 is appropriate when the schema fully documents the single parameter.

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 gives a specific verb and resource: 'Turn an automation on.' It also clarifies the immediate effect: tracked events start runs. It does not explicitly distinguish itself from sibling tools such as pause_automation or create_automation, so it falls short of a 5.

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 description implies when to use it by stating the effect of activation, but it does not explicitly compare alternatives like pause_automation or update_automation. It also gives no prerequisites or conditions for when not to use it. This is implied usage rather than explicit guidance.

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