form

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

No annotations are provided, so the description bears the full burden of behavioral disclosure. It exposes that 'state' is about form state/validation and 'select' sets a value, but it does not explain side effects of 'toggle' or 'upload', possible mutations, permissions, or what happens on failure. This is incomplete for a multi-action tool.

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 compact and front-loaded with the action list, which is efficient. However, it is fragmentary and appears truncated after 'value …', making the structure incomplete rather than confidently concise.

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?

With six parameters, no annotations, no output schema, and only partial schema descriptions, the description covers only some actions and parameter nuances. Actions like 'toggle' and 'upload' are named but not explained, so an agent lacks enough context to invoke all supported operations correctly.

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 only 33%, so the description needs to compensate. It does add useful meaning for 'formRef' (state: omit for all), 'frameId' (omit = top), and action semantics, but it does not document 'ref', 'value', or 'filePath'. The parameter names are somewhat self-explanatory, but the coverage gap remains partially unfilled.

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 identifies the tool as form operations and enumerates specific action modes ('state', 'select', 'toggle', 'upload'), with a bit of detail for 'state' (fields, validation, submit readiness). This is more than a tautology and gives an agent a concrete sense of what the tool does, though it is not a full sentence-level definition.

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 gives some scoping hints ('formRef optional = all', 'frameId omit = top') but does not indicate when to use this tool versus siblings like click, type_text, or dialog, and does not state any exclusions or alternatives. The agent is left to infer usage context.

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