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

Annotations already declare readOnly, idempotent, non-destructive, and closed-world status, so the safety bar is partly met. The description adds real value beyond them by enumerating outputs (results, conditions, assumptions, editable link, share page, PNG) and explicitly stating no account access or order execution.

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 dense sentences, front-loaded with the unit conventions and followed by outputs and safety scope. Almost every clause earns its place, though the opening verb-less phrase is slightly weaker than a direct purpose statement.

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?

An output schema and full annotation set already carry return-shape and safety burden, and the description reinforces this with units and an explicit no-execution note. It is complete enough for an agent to invoke, with the only gap being absent routing guidance versus sibling calculators.

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%, so the baseline is 3. The description consolidates units across parameters (mid/tick in USD, weights in percent, spread/skew/cap in bps) and re-explains skew, but this largely overlaps what the schema already documents per field rather than adding new semantics.

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 opens with "Inventory quotes," which essentially restates the tool name rather than stating a clear verb+resource, and it never distinguishes itself from siblings like spread_and_fees. The unit mapping and return description do convey that this computes inventory-based quotes, so the purpose is inferable but not crisply actionable.

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?

There is no when-to-use guidance, no conditions, and no reference to sibling tools such as spread_and_fees. The line "No account access or order execution" scopes behavior but does not tell the agent when to pick this tool over alternatives.

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