click

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

With zero annotations provided, the description carries the full burden of behavioral disclosure. It mentions that 'page results stay local to the Agent,' which hints at scope isolation, but doesn't disclose whether the click navigates the page, triggers async events, requires snapshot freshness, or can fail (e.g., stale element). The non-empty sentence adds one useful behavior detail but is insufficient.

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?

Two short sentences with the operation front-loaded. The phrasing 'Run the...operation' is slightly indirect but efficient. The second sentence is a single behavioral note. No wasted words, though the 'local' repetition ('local Chrome' and 'local to the Agent') is redundant.

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 no output schema, no annotations, and four parameters with 0% schema coverage, the description should compensate significantly but doesn't. Missing details: what the click does (navigation? form submission?), return values, error behavior, prerequisites like valid session/snapshot, and whether clicking may trigger side effects. The description is too thin for real-world invocation safety.

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%, so the description must compensate, but it explains none of the four parameters. The names session_id, snapshot_id, and element_ref suggest their roles, but request_id is entirely unexplained among three required params. The description adds zero parameter meaning beyond the schema.

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 states the tool performs a click operation in a local Chrome browser, which is a clear verb+resource combination. However, it doesn't differentiate from siblings like fill, scroll, or navigate beyond the generic notion of clicking — the scope (what element, what outcome) is implied rather than specified.

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 provides no guidance on when to invoke this tool versus alternatives like navigate, fill, or scroll. It mentions the local browser context but offers no exclusions, prerequisites, or selection criteria to help an agent choose it over siblings.

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