fill_form_by_uid

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

The description is extremely sparse with no behavioral details. It does not disclose that this is a write operation, whether it overwrites existing values, or how it handles invalid UIDs. With no annotations, the description fails to inform the agent of important behavioral traits.

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 a single concise sentence that directly states the tool's purpose. It is not overwritten, but could be slightly more structured with additional context. It earns a 4 for being appropriately sized for a simple function.

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 fills multiple form fields, the description lacks important context such as expected behavior on partial failures, relationship to form submission, or support for different field types. It is insufficiently complete for a batch operation with no output schema.

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?

The input schema has 100% description coverage for all parameters, so the schema already documents parameter meaning. The tool description adds no additional semantics beyond what the schema provides, earning a baseline score of 3.

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 specifies 'Fill multiple form fields at once,' which clearly indicates a batch operation on form fields, distinguishing it from the singular 'fill_by_uid' sibling. However, it lacks mention that it uses UIDs to target fields.

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 usage guidance is provided. The description does not explain when to use this tool versus alternatives like 'fill_by_uid' or 'click_by_uid', nor does it mention prerequisites or constraints.

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