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

The annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is clear. The description adds useful details about compact contexts and unit-scoped pricing, but does not explain result ordering, per-job failure behavior, or output shape.

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 three short sentences with the primary purpose front-loaded, followed by compact-context and pricing-unit details. Every sentence carries useful information, and there is no filler.

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 composite tool with six parameters and no output schema, the description covers the main purpose, the 10-item limit, compact mode, and unit-scoped pricing. It leaves important context unexplained, including the 'constraints' parameter, the 'jtbd' alias, and what the returned bundle structure looks like.

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?

With 50% schema description coverage, the description adds meaningful semantics for key parameters: 'up to 10 JTBDs' for jtbds, 'compact=true for small context windows' for compact, and the maxUsd/maxUnit relationship. It does not explain the 'constraints' comma list or the 'jtbd' alias, so some gaps remain.

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 composite operation over JTBDs: decide, quote, free, and failures in one call, with a clear limit of up to 10. It distinguishes the batch tool from individual sibling tools implicitly, but does not explicitly name when to use it instead of decide/quote/free/failures.

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 phrase 'for up to 10 JTBDs in one call' implies the batch usage context, and 'compact=true for small context windows' gives one parameter-level usage cue. However, it does not explicitly state when to use this tool versus the individual sibling tools, nor when not to use it.

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