Fill Form [Pro]

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

Describes the behavior of clearing and filling fields, but no annotations provided, so description partially covers safety but doesn't mention side effects or failure modes.

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?

Concise two-sentence description with front-loaded purpose; uses markdown for the [Pro] tag but still efficient.

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 no output schema and simple parameters, description is largely complete; could add error handling or prerequisites.

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%, and description only adds that fields are found by natural language description; baseline 3 since schema already covers parameters.

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?

Clearly states it fills multiple form fields in a single operation, specifying it as a batch operation that uses natural language descriptions, which distinguishes it from smart_type.

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?

Explicitly says it's more efficient than calling smart_type multiple times, but doesn't specify when not to use it or alternatives beyond smart_type.

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