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iclaudiumihaila

MCP Safari Server

wait_for_element

Halt script execution until a specified element appears on the page. Use CSS selector to target, set timeout, and optionally require visibility.

Instructions

Wait for an element to appear on the page

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
timeoutNoMaximum time to wait in milliseconds
visibleNoWait for element to be visible
selectorYesCSS selector to wait for
Behavior2/5

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

No annotations are provided, and the description fails to disclose key behaviors like what happens on timeout (error vs boolean), whether it blocks, or if it modifies state. The bare description leaves significant gaps.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence that is front-loaded with the primary action. However, it could be slightly more informative without losing conciseness.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has three parameters and no output schema, the description is incomplete. It does not explain return values, error handling, preconditions, or the effect of the timeout and visible parameters on behavior.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the schema already describes the three parameters. The description adds no additional meaning or context about how the parameters interact or defaults, so baseline 3 is appropriate.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool waits for an element on the page, distinguishing it from sibling tools like click_element or get_element_text. However, 'appear' is slightly ambiguous between existing in DOM and being visible, though the visible parameter clarifies.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives, such as other wait mechanisms or handling timeouts. No mention of prerequisites or context.

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

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