batch_batch_reduce

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

No annotations provided. Description mentions built-in reducers but does not disclose side effects, idempotency, or behavior for missing/invalid fn strings. Insufficient for full understanding.

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?

Description is brief and front-loaded with purpose. Could improve by explicitly listing reducers in a structured format, but current is efficient and no wasted words.

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?

Output schema exists but not shown; description omits return value. For a reduction tool, return type is inferred but not explicit. Most context provided, but missing output info.

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 0% schema description coverage, the description explains 'initial' as starting accumulator and lists built-in reducers, adding meaning beyond schema but does not describe the 'items' array type or custom fn usage.

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?

Description clearly states this is a fold/reduce operation on items with fn(acc, item), distinguishes from batch siblings like map and filter.

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?

No explicit guidance on when to use this tool vs alternatives (e.g., when not to use, or comparison to batch_batch_map). Over-reliance on tool name for context.

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