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click

Click a UI element by providing its semantic reference, selector expression, or screen coordinates. Supports repeated actions, double-tap, and adjustable hold duration.

Instructions

Click or tap a semantic UI target by ref, selector, or point.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
cwdNoWorking directory for command execution.
rawNoUse raw snapshot data during selector resolution.
udidNoiOS device UDID selector.
countNoNumber of press/click repetitions.
debugNoEnable debug diagnostics.
depthNoSnapshot traversal depth.
runIdNoLease run identifier.
scopeNoSnapshot scope selector used before resolution.
buttonNoPointer button for platforms that support mouse buttons.
deviceNoDevice name selector.
holdMsNoHold duration for each action.
serialNoAndroid serial selector.
targetYesUI target. This is separate from deviceTarget, which selects the device form.
tenantNoRemote tenant identifier.
verifyNoCapture cheap post-action evidence (AX digest, node counts, changedFromBefore) instead of a follow-up snapshot.
leaseIdNoExisting lease identifier.
sessionNoAgent-device session name.
jitterPxNoRandomization radius in pixels.
platformNoPlatform selector used to resolve a device.
stateDirNoAgent-device state directory.
doubleTapNoRequest a double-tap action.
intervalMsNoDelay between repeated press/click actions.
includeCostNoInclude per-command agent-cost (cost.wallClockMs, …) in structuredContent. Defaults to off; the default response shape is unchanged.
deviceTargetNoDevice target form. Maps to the CLI --target flag.
daemonBaseUrlNoRemote daemon base URL.
responseLevelNoResponse verbosity: token-cheap digest / default (today) / full. Defaults to default; the default response shape is unchanged.
daemonAuthTokenNoRemote daemon auth token.
iosXctestEnvDirNoWritable directory for iOS XCTest runner env overlays.
mcpOutputFormatNoMCP text content format. Defaults to optimized agent-friendly text; use json for JSON text. Structured content is always returned separately.
iosXctestrunFileNoExternally built iOS XCTest runner .xctestrun artifact path.
iosSimulatorDeviceSetNoiOS simulator device-set path used for device resolution.
androidDeviceAllowlistNoAndroid serial allowlist used for device resolution.
iosXctestDerivedDataPathNoDerived data path for external iOS XCTest runner execution.
Behavior2/5

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

With no annotations, the description carries the full burden. It only states the basic action, omitting behavioral traits like what happens when the target is not found, post-click effects, or error handling. This is insufficient for a tool with 33 parameters.

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

Conciseness5/5

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

A single sentence with no fluff. Every word contributes to the core function. Highly efficient.

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 33 parameters and no output schema or annotations, the description is severely lacking. It does not explain return values, side effects, or parameter interactions needed for correct usage.

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?

The description adds value by mentioning the three target types (ref, selector, point), but the schema already covers 100% of parameter descriptions. No additional semantic context is provided beyond the schema.

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 action 'click or tap' and the resource 'semantic UI target' with methods 'by ref, selector, or point'. However, it does not differentiate from sibling tools like 'press' or 'longpress', leaving ambiguity.

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?

No guidance is provided about when to use this tool versus alternatives such as press, longpress, or tap. The description lacks context for appropriate selection.

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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