pause

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

With no annotations, the description carries the burden, and it does so well: it discloses the main action and a key behavioral trait (preserving the playhead). It doesn't cover edge cases like pausing when already paused, but for a simple zero-parameter control, it is sufficiently transparent.

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?

A single, efficient sentence that front-loads the action and immediately states the critical differentiator. No filler or redundancy.

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?

For a zero-parameter playback control with an existing sibling set, the description provides the essential operation and nuance. No return value or schema details are needed, so nothing is missing.

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 zero parameters, so schema coverage is 100% by definition. The description adds no parameter-specific meaning because there is nothing to document; the baseline 4 applies.

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 names a specific verb ('Pause') and resource ('playback in Synthesizer V Studio'), and the qualifier 'without resetting playhead' distinguishes it from stop/seek operations. An agent can tell exactly what the tool does and how it differs from siblings like stop.

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 implies the correct use case: pause when preserving the playhead position is desired, implying stop would reset it. It doesn't explicitly name alternatives, but the contextual clarity is high and no exclusion is needed.

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