browser_get_by_placeholder

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

No annotations are provided, so the description carries the full burden. It only states the core action and gives no information about matching behavior (exact vs. substring), what happens with multiple matches, error handling, or the return format. The 'exact' parameter hints at a matching mode, but the description does not address it.

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?

A single short sentence that is front-loaded and easy to parse. However, the brevity comes at the cost of omitting essential details, so it is concise but under-specifying.

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 large family of sibling locator tools and the absence of an output schema, the description is insufficiently complete. It does not explain return values, matching behavior, or how to choose among the get_by_* variants. The two parameters are also poorly documented.

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 0%, and the description does not explicitly describe the parameters. It implies that 'text' is the placeholder value, but the 'exact' parameter's meaning and effect are completely undefined. The description adds minimal semantic value beyond the parameter names.

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 "Find element by placeholder" – a specific verb and resource with the placeholder attribute as the locator. This distinguishes it from sibling locator tools like get_by_role or get_by_text, though it does not explicitly name any alternatives.

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 the many other get_by_* locator tools. There are no prerequisites, exclusions, or alternative suggestions. The intended use case is only implied by the tool name and description.

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