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nzrsky

xctools-mcp-server

xcodebuild_show_sdks

List all available Xcode SDKs to identify and select the right SDKs for your development needs.

Instructions

List all available SDKs.

Returns: List of available SDKs

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided, so the description must carry full behavioral transparency. It only states the action and return value, without disclosing that it runs xcodebuild -showsdks, its nondestructive nature, or that Xcode must be installed.

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 short (two sentences) but the second sentence 'Returns: List of available SDKs' is redundant with the first. Removing it would improve conciseness. Overall, it is still appropriately sized.

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

Completeness3/5

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

For a simple parameterless tool with an output schema, the description is minimally adequate. However, it lacks context about prerequisites (Xcode installation), potential errors, or how the SDK list is obtained, making it only partially complete.

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

Parameters4/5

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

The tool has zero parameters, and the schema coverage is 100%. Baseline for 0 parameters is 4; the description does not add any parameter information, but none is needed.

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

Purpose5/5

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

The description clearly states 'List all available SDKs', using a specific verb and resource. It is unambiguous and distinguishes from sibling tools that build, test, or archive.

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 on when to use this tool versus alternatives. There is no mention of prerequisites, when-not to use, or comparison with siblings like xcodebuild_list or xcrun_show_sdk_path.

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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