xcode_list_simulators_json

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It mentions the output format (JSON) but fails to describe other key behaviors such as whether this is a read-only operation, if it requires specific permissions, what the JSON structure includes, or any error conditions. This leaves significant gaps for a tool with no annotation coverage.

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?

The description is a single, efficient sentence that front-loads the core purpose ('List simulators') and adds necessary detail about the output format. There is no wasted verbiage, making it appropriately sized and easy to parse quickly.

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?

Given the tool's simplicity (0 parameters, no output schema, no annotations), the description is minimally adequate by stating the action and output format. However, it lacks details on behavioral aspects like read/write nature, error handling, or JSON structure, which could be helpful despite the low complexity. It meets the baseline for a basic listing tool but doesn't excel in completeness.

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?

The tool has 0 parameters with 100% schema description coverage, so the schema fully documents the lack of inputs. The description adds no parameter information, which is appropriate here. Baseline is 4 for zero parameters, as no additional semantics are needed beyond the schema's completeness.

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 clearly states the action ('List simulators') and specifies the output format ('in JSON format for parsing'), which distinguishes it from the sibling tool 'xcode_list_simulators' that likely outputs differently. However, it doesn't explicitly differentiate from 'xcode_list_available_simulators' or 'xcode_list_physical_devices', which may list different types of devices.

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 use this tool versus alternatives like 'xcode_list_simulators' (presumably non-JSON output), 'xcode_list_available_simulators', or 'xcode_list_physical_devices'. It lacks explicit when/when-not instructions or context for selection among similar listing tools.

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