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Zooeyii

macos-computer-use-mcp

by Zooeyii

write_clipboard

Writes any text to the macOS clipboard for pasting into other applications. Solves the need to programmatically set clipboard content for automated tasks.

Instructions

Write text to the clipboard. Requires the clipboardWrite grant.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
textYes
Behavior3/5

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

With no annotations provided, the description bears full responsibility. It discloses the need for a specific permission but does not mention side effects like overwriting existing clipboard content or behavior on failure, leaving behavioral aspects partially uncovered.

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?

The description is a single, efficient sentence that includes both the core functionality and a key requirement. Every word serves a purpose with no redundancy.

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?

Given the tool's simplicity (one parameter, no output schema), the description is minimally adequate. However, it lacks details on synchronous behavior, error handling, and whether the operation is idempotent, making it less complete than it could be.

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

Parameters2/5

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

The schema has one parameter 'text' with no description coverage (0%). The description adds no additional meaning about the parameter, such as format restrictions, length limits, or encoding, failing to compensate for the schema's lack of detail.

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 'Write text to the clipboard' clearly states the action and resource, with a specific verb and target. It effectively distinguishes itself from the sibling 'read_clipboard'.

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

Usage Guidelines3/5

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

The description mentions a required grant ('clipboardWrite'), which provides a usage condition. However, it does not offer explicit guidance on when to use this tool versus alternatives nor when not to use it.

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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