Book a Tend appointment

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

With no annotations, the description carries full responsibility for behavioral disclosure. It notes the dependency on a not-yet-implemented slot-search tool, but omits details such as whether booking is irreversible, requires authentication, or what happens on success/failure. This is insufficient 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?

The description is two sentences with no wasted words. The first sentence front-loads the main action, and the second provides a necessary prerequisite and caveat, maintaining optimal conciseness.

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 simple single-parameter mutation tool with no annotations and no output schema, the description covers purpose and parameter source but lacks information about return values, error behavior, and post-conditions. It is adequate for basic selection but has notable gaps.

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% with a clear description of slotId. The tool description adds meaning by specifying that the slotId must be obtained from a slot-search tool and that this tool is not yet implemented, providing helpful context about the parameter's origin and current limitation.

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 uses a specific verb 'Book' and resource 'appointment slot', clearly distinguishing it from the sibling 'list_appointments'. It also states the key prerequisite (slotId), making the tool's purpose 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 description explains the tool requires a slotId to be looked up via a slot-search tool, which sets clear context for when to use it. However, it does not explicitly mention exclusions like 'do not use for listing' or alternative tools, though the sibling's name implies the difference.

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