pause

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

With no annotations provided, the description carries full burden for behavioral disclosure. 'Pause playback' implies a state-changing action but doesn't specify if it requires active playback, what happens to playback state, or if it's reversible. For a mutation tool with zero annotation coverage, this is a significant gap in transparency.

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 extremely concise ('Pause playback') with zero wasted words, making it front-loaded and easy to parse. Every word earns its place by directly conveying the core action, though this brevity comes at the cost of completeness in other dimensions.

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) but lack of annotations, the description is incomplete. It doesn't address behavioral aspects like what 'pause' entails in this context, error conditions, or how it interacts with sibling tools (e.g., 'play', 'stop'). For a state-changing tool, more context is needed.

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 doesn't need to add parameter semantics, and it appropriately avoids mentioning any. A baseline of 4 is applied for zero-parameter tools when the schema coverage is complete.

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 'Pause playback' clearly states the tool's function with a specific verb ('pause') and resource ('playback'), making its purpose immediately understandable. However, it doesn't differentiate from sibling tools like 'stop' or 'play', which might have related functionality in a media playback context.

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 'stop' or 'play' from the sibling list. It lacks context about prerequisites (e.g., requires active playback) or exclusions, leaving usage entirely implicit based on the tool name alone.

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