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

With no annotations provided, the description carries the full burden and does so thoroughly. It discloses that runs are dispatched to AI workers (Modal), credits vary, files are deleted after processing, tasks are auditable, and workspace unlock is credit-pack based—all beyond the basic purpose.

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 front-loaded with the core purpose and usage, but it becomes cluttered with tangential billing details about workspaces and a pricing link, which are not directly relevant to tool selection or invocation. Minor formatting issues like the double period after 'Song Generator' also detract from polish.

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 zero parameters and no output schema, the description is quite complete: it covers purpose, input criteria, exclusions, alternatives, credit eligibility, file deletion, and auditability. It does not mention output format, but the provided task/account link and pricing reference help fill in operational details.

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 schema has zero parameters, so the description is the only source of input semantics. It supplies the essential input requirement ('clean single-instrument recording') and the desired output ('instrumental music in your style'), surpassing the baseline for no-param tools.

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 clearly states the tool's function: upload a clean single-instrument recording and generate instrumental music in the user's style. It explicitly distinguishes itself from sibling tools by noting 'No vocals' and directing users with vocals to AI Hum to Song or AI Song Generator.

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?

Usage conditions are explicitly stated: clean single-instrument recording, instrumental output only, and no vocals, with named alternatives for vocal songs. It also provides practical guidance on credit restrictions, noting that Day Pass and welcome credits do not include AI Studio runs.

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