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boot

Boot a selected device by specifying platform, device name, or UDID, bypassing CLI positional arguments.

Instructions

Boot or prepare a selected device without using CLI positional arguments.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sessionNoAgent-device session name.
platformNoPlatform selector used to resolve a device.
deviceTargetNoDevice target form. Maps to the CLI --target flag.
targetNoAlias for deviceTarget on commands without a UI target field. Interaction commands reserve target for the UI element.
deviceNoDevice name selector.
udidNoiOS device UDID selector.
serialNoAndroid serial selector.
iosSimulatorDeviceSetNoiOS simulator device-set path used for device resolution.
androidDeviceAllowlistNoAndroid serial allowlist used for device resolution.
daemonBaseUrlNoRemote daemon base URL.
daemonAuthTokenNoRemote daemon auth token.
tenantNoRemote tenant identifier.
runIdNoLease run identifier.
leaseIdNoExisting lease identifier.
cwdNoWorking directory for command execution.
debugNoEnable debug diagnostics.
headlessNoBoot without showing simulator UI when supported.
stateDirNoAgent-device state directory.
Behavior2/5

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

No annotations provided, so the description must carry behavioral disclosure. It only says 'boot or prepare' without explaining side effects (e.g., starting an emulator, device state changes), prerequisites, or failure modes. Lacks transparency for a complex operation.

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?

Single sentence that is front-loaded and concise. No extraneous words; every part is relevant.

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?

With 18 parameters, no output schema, and no annotations, the description is too sparse. It does not explain return values, error conditions, or the overall process, leaving the agent underinformed for selecting and invoking the tool correctly.

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 description coverage is 100%, so the baseline is 3. The description adds no extra meaning beyond the schema parameter descriptions; it does not clarify parameter interactions or provide usage context.

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?

Description clearly states the tool boots or prepares a device, using specific verb and resource ('Boot or prepare a selected device'). It distinguishes from CLI positional arguments but does not differentiate from sibling tools like 'devices' or 'session'.

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 on when to use this tool versus alternatives. The description mentions 'without using CLI positional arguments' as a differentiator but does not explain specific use cases or scenarios where boot is appropriate compared to other tools.

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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