Set Eight Sleep Side On/Off

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

Annotations already indicate this is a mutation (readOnlyHint=false) and idempotent (idempotentHint=true). The description adds the prerequisite 'Requires EIGHT_SLEEP_ALLOW_MUTATIONS=true,' which is valuable beyond the annotations. However, it does not describe other behavioral aspects like side effects or response details.

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?

The description is exceptionally concise at one sentence plus a prerequisite note. It is front-loaded with the key action and contains no extraneous 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?

The tool has three parameters and an output schema, but the description omits context for optional parameters like 'user_id' (which side?) and 'response_format.' It does not describe the output or what happens when the side is turned on/off (e.g., effect on temperature settings). The description is incomplete for confident use.

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 low (33%). The description implicitly covers the required 'is_on' parameter by mentioning turning on/off, but fails to explain 'user_id' and 'response_format.' The agent receives no additional insights into these optional parameters.

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 clearly states the action: 'Turn the user's bed side on or off.' It uses a specific verb and resource, making the purpose evident. However, it does not explicitly differentiate the tool from siblings like eight_sleep_set_temperature, which could cause confusion.

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 provides no guidance on when to use this tool versus alternatives. It only mentions the required environment variable, but lacks context on use cases or exclusions. The agent is left without decision guidance.

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