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

Annotations already declare readOnlyHint=true and destructiveHint=false, and the description does not contradict them: it only produces a proposal. It adds useful behavioral context by describing what the response contains and flagging an x402 payment step, but it does not say whether anything is persisted, whether the proposal is free, or how the payment flow is triggered.

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 with no filler: the first states the input and the enriched output, the second frames the workflow. The key information is front-loaded.

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 simple single-parameter tool with no output schema, the description does outline the return payload, which is the main gap it needed to cover. It remains thin on how the proposal relates to the sibling generation tools and on what the x402 payment step actually requires from the agent.

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?

There is a single required parameter with 100% schema description coverage, so the schema already explains that the brief covers topic, tone, and intended use. The description only restates 'brief creativo' and adds no format, length, or content guidance 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?

The description names a specific verb and resource: it receives a creative brief and returns a commission proposal, then enumerates the proposal's contents (suggested mood and seed, draft piece, deliverables, payment). That is far more specific than the sibling names like generate_composition or composicion_premium, though it never explicitly contrasts itself with them.

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?

It sketches the commission workflow ('brief -> entrega -> pago x402'), which implies this is the entry point of a paid engagement flow. However, it gives no explicit when-to-use versus generate_composition, composicion_premium, or variaciones_estilo, and no stated preconditions.

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