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

Adds substantial behavioral context beyond the annotations: the widget runs only while on screen, audio timing depends on the device, and the tool does not record audio or detect pitch. These details help an agent understand practical limitations and non-capabilities.

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 dense paragraph with the usage trigger front-loaded, and most sentences carry useful information. Some keyword repetition and feature listing make it slightly less tight than ideal.

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 annotations, full schema coverage, nested ramp object, and existing output schema, the description is complete enough for an agent to call the tool correctly. It covers the live-widget behavior, limits, timing caveats, and what the tool does not do.

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?

Schema description coverage is 100%, so parameter details are already fully documented. The description reinforces major ranges and features such as 20–400 BPM, 1–16 beats, accents, subdivisions, and ramps, but does not add much parameter-specific meaning beyond the schema.

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?

States a specific action and resource: it opens a live metronome beat widget with detailed capabilities. The purpose is very clear, but it does not explicitly distinguish itself from sibling tools like calculate_tempo_values or plan_tempo_practice.

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?

Begins with a clear trigger: 'Use this when the user wants a metronome...' and lists relevant user intents such as tap tempo or practice. It gives strong positive guidance but does not state when to prefer the sibling calculation or planning tools instead.

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