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

The description adds meaningful behavior beyond the annotations: the result is deterministic, dates are planning targets rather than final commitments, and the intro call fixes the real schedule. It also warns against adding or moving sessions, which is useful operational guidance that the annotations do not convey.

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?

Three tight sentences front-load the core output, then add constraints and a usage trigger. Every sentence earns its place, with no filler or restatement of the title.

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?

Even without an output schema, the description explains what the tool returns (dated sessions, checkpoint, closing review) and how the agent should use it (narrate around it, never add/move sessions). It also clarifies the provisional nature of dates, making the tool effectively self-contained for correct invocation.

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 75%, and the existing schema descriptions already explain start_date, context, and leaders_count well; offer_id is conveyed via its enum. The description does not add parameter-level details, but the schema carries the semantic weight, so a baseline score is appropriate.

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 states a specific verb and resource: it computes a 'Deterministic session skeleton' from 'the package's cadence metadata,' listing dated sessions, the mid-point checkpoint, and the closing review. It differentiates the tool from siblings by emphasizing that the skeleton contains only what the package carries and must not be augmented or altered by the agent.

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 last sentence gives a clear trigger: 'Call when the visitor asks what the engagement actually looks like.' It does not explicitly name alternative tools or state when not to use it, but the context is specific enough to route an agent correctly.

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