audio_bpmGetCached

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

With no annotations, the description must disclose behavior itself. It states 'cached' but does not explain what happens on a cache miss (e.g., error, null, automatic computation), whether the operation is read-only, or if any side effects occur. This leaves significant ambiguity for a read operation.

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, front-loaded sentence with no filler. It directly and efficiently states the core action and target, making it highly concise for its simplicity.

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?

The tool has no output schema, no annotations, and an extremely sparse description. It does not cover return values, cache-miss behavior, error cases, or performance implications. For a tool with one parameter and no other structural attributes, this description is insufficient for reliable invocation.

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 0%, so the description should compensate. The sole parameter filePath is left entirely to its name; no format, path type, or constraints are mentioned. The description adds no semantic value beyond the schema's type declaration.

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 uses a specific verb ('Get') with a resource ('cached BPM analysis') and an object ('audio file'), making the tool's function unmistakable. It also distinguishes itself from the sibling tool audio_bpmCacheSet by emphasizing 'cached' and the getter role.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention that this returns previously computed data, when a fresh analysis would be needed, or that critical alternatives such as audio_bpmCacheSet or a live analysis tool exist. The context is entirely implied.

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