transform_transform_pick

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

With no annotations, the description bears the burden of behavioral disclosure. It states the return format but does not mention whether the tool mutates the input, requires permissions, or has side effects. The missing key behavior is partially explained via the 'missing' field in output.

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 extremely concise with a single sentence and a brief prefix. Every word is informative and front-loaded, leaving no unnecessary content.

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?

Given the tool has an output schema and nested parameters, the description is adequate but minimal. It covers the basic action and return shape but lacks details on edge cases like missing keys (beyond 'missing' field) and data type expectations. Completeness is acceptable but not thorough.

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 0% and the description adds no additional meaning beyond the field titles. It does not explain key format, nested key behavior, or constraints on the array elements. The output schema may compensate, but parameter semantics remain underdescribed.

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 clearly states the verb 'Extract', the resource 'specified keys from a dict', and the output format '{result, picked, missing}'. It distinguishes the tool from sibling transform tools like omit and rename by specifying the action of picking keys.

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 description implies usage for extracting specific keys but does not explicitly compare with alternatives like transform_omit or provide guidance on when to use this versus other transform tools. No exclusion criteria are given.

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