generate_music

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

With no annotations supplied, the description carries the full burden, and it does add real behavioral context: inputs are validated against current documented constraints and the call sits behind two paid-operation gates. It still omits what those gates are, what happens when they are not satisfied (error vs. silent downgrade), and whether generation is synchronous or long-running.

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?

Two sentences, no filler, with the dual input mode front-loaded. The phrasing 'documented constraints' and 'paid-operation gates' is vague jargon that would benefit from one concrete clarifying clause, but nothing is wasteful.

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 nine-parameter, nested-object, no-annotation, no-output-schema generation tool, the description is thin: it explains neither cost/budget behavior, nor the required filename, nor model selection, nor the result shape. An agent could not reliably construct a valid paid request from this text plus the bare schema.

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% across nine parameters including a nested composition_plan object, so the description must compensate. It only gestures at two of them ('prompt' and 'chunk-based plan') and leaves model_id, seed, music_length_ms, filename, force_instrumental, allow_paid, and allow_unknown_cost entirely unexplained—especially costly since the paid gates map directly to those two booleans.

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 verb and resource ('Compose music') and distinguishes two input modes: a prompt or a chunk-based composition plan. It does not differentiate itself from close siblings such as generate_music_stream, generate_music_detailed, or generate_music_from_video, so it falls short of a 5.

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 usage through 'either a prompt or a chunk-based plan', letting an agent infer the two calling modes, and hints that paid-operation gates must be satisfied. It never says when to choose this tool over the streaming/detailed variants or generate_music_from_video, and gives no prerequisites for the gates.

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