form_creator

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

Since no annotations are provided, the description carries full responsibility for behavioral disclosure. It only states the action without revealing whether the PDF is modified in place or a new file is created, whether permissions are needed, or how the output is named. The schema hints at output_name defaults, but the description does not clarify these 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 sentence of ten words, front-loading the key action and resource. Every word is relevant, with no filler or repetition. It is as concise as possible while still being informative.

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?

The tool has moderate complexity with a nested fields array, but the schema fully describes parameters. However, the description lacks behavioral context (e.g., output handling, relation to form_filler) and usage scenarios, making it only minimally complete. It does not need to explain return values since there is no output schema, but more contextual detail would be valuable.

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 description coverage is 100%, meaning all parameters are already described in the schema. The description adds no extra parameter semantics beyond what the schema provides; it only mentions field types, which are also captured in the enum. Baseline 3 is appropriate.

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 tool's function: 'Add form fields (text inputs, checkboxes) to a PDF.' It uses a specific verb ('Add') and resource ('form fields to a PDF'), and the parenthetical specifies the field types. This distinguishes it from the sibling 'form_filler', which likely fills existing forms, making the purpose unambiguous.

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 guidance is provided on when to use this tool versus alternatives like 'form_filler' or other PDF manipulation tools. There is no mention of prerequisites, target use cases, or exclusions, leaving the agent to infer usage from the name and description alone.

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