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

With no annotations, the description carries the full behavioral burden and discloses almost nothing: it does not say whether processing is synchronous or async, whether a task ID is returned, whether credits are consumed (a get_my_credits sibling exists), or what side effects occur. "Main entry point" hints at breadth but not at behavior.

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, front-loaded and free of padding, so it is structurally clean. However the brevity reflects under-specification rather than efficiency, since the content needed to use the tool is simply absent.

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 4-parameter, mutation-style entry-point tool with no annotations, no output schema, and defaults that are unexplained (format=mp3, preset=studio_room, task_type=4stems), the description is wholly inadequate. An agent would have to guess at return values, task lifecycle, and valid parameter values.

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 are 4 parameters at 0% schema description coverage, including a required source_key and a task_type that clearly implies a mode of processing (e.g., stem counts). The description names none of them and explains nothing about format, preset, or task_type values, leaving the caller to guess valid inputs.

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?

"Process an uploaded audio file" merely restates the tool name process_audio with a generic verb, and "Main entry point for all SonicAura features" is a marketing claim rather than a description of what processing occurs. It does not distinguish this tool from specific siblings like submit_separation or extract_vocals, which appear to perform concrete audio operations.

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 asserts it is the "main entry point" but gives no condition for choosing it over submit_separation, extract_vocals, or upload_audio, and no prerequisites or ordering guidance. An agent cannot infer when this tool is correct versus its many siblings.

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