SunoMCP

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

No annotations provided, so description carries full burden. Adds valuable behavioral context: mentions conversion process, file size trade-offs ('larger'), and implies async pattern via 'Task ID' return. However, lacks safety profile (destructive?), rate limits, or auth requirements.

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?

Excellent structure with logical flow: purpose → technical characteristics → quality comparison → explicit usage scenarios → return value. Every sentence earns its place; no redundancy or filler despite multiple sections.

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?

Appropriately complete for a format-conversion tool. Mentions Task ID return (hinting at async behavior) despite existence of output schema. Could explicitly state the async nature or polling requirements, but covers essential format-specific context.

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 100% (both audio_id and callback_url fully described in schema). Description references 'generated song' which maps to audio_id, but doesn't add syntax details or callback payload semantics beyond schema. Baseline 3 appropriate when schema is comprehensive.

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?

Opens with specific verb+resource ('Get the lossless WAV format'), clearly distinguishes from siblings like suno_get_mp4 and suno_get_midi by specifying the exact audio format. The comparison to MP3 further clarifies the specific value proposition of this tool.

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?

Contains explicit 'Use this when:' section with three clear scenarios (production, highest quality, further processing). However, lacks explicit 'when not to use' guidance or direct references to sibling alternatives (e.g., 'use suno_get_mp4 for video instead').

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