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

Annotations already declare readOnly/idempotent/non-destructive, and the description is consistent with them. It adds real value beyond annotations by disclosing the modeling assumptions (conservative right-angle geometry; payload, door, stacking and forklift limits) and an explicit accuracy disclaimer, though it says nothing about limits like max 10 panel lines or how defaults are applied.

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: purpose and outputs first, modeling basis second, disclaimer last. Every sentence carries information and nothing is repeated from the schema.

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 description names the returned quantities (which helps since there is no output schema) and sets safety expectations for a mutating-looking but read-only calculator. However, for a tool this parameter-rich with zero schema descriptions, the near-total silence on the 20+ nested inputs leaves an agent unable to use many options without guessing.

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%, and the schema is deep — 6 top-level params with ~17 nested panel fields plus a handling object. The description only hints at 'panels', 'container', and 'payload/door' (container_overrides); it explains nothing about tier_cap, stacking_basis, plan, clearance_mm, lift_mode, or capacity_mode, so parameters are effectively undocumented.

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?

States a specific verb ('Estimate') plus exactly what is computed: sheets per pallet, pallet count, and 20/40-foot container use for bamboo panel lines. No sibling tool (product search, inquiry prep) does anything similar, so an agent can route here unambiguously.

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 closing sentence sets a clear scope boundary: 'Planning estimate only; not a loading approval or freight quotation,' which tells the agent when to trust and not trust the output. It does not name any alternative or prerequisite (e.g., when to prefer a real freight quote tool), leaving some inference to the agent.

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