MiniMax MCP

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

With no annotations provided, the description carries full burden but lacks behavioral details. It states what the tool does (play audio) and returns (text with path), but doesn't disclose critical traits like whether it requires specific permissions, if it blocks until playback completes, error handling, or system resource implications. The return value description is minimal and doesn't explain what 'text content with the path' means in practice.

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 appropriately sized and front-loaded with the core purpose in the first sentence. The Args/Returns sections are structured but could be more integrated. Some redundancy exists (e.g., 'Not supports video' could be merged with format support), but overall it's efficient with minimal waste.

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 no annotations, no output schema, and 0% schema coverage, the description is incomplete for a tool with 2 parameters. It covers basic functionality and parameters but misses behavioral context (e.g., playback controls, error conditions), detailed return format, and integration guidelines. For an audio playback tool, this leaves significant gaps in understanding how to use it effectively.

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%, so the description must compensate. It adds some meaning: it explains 'input_file_path' as 'the path to the audio file to play' and mentions 'is_url' indicates 'whether the audio file is a URL'. However, it doesn't clarify path format expectations (absolute/relative), URL validation, or default behavior when is_url is false. This provides basic but incomplete parameter context.

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 purpose: 'Play an audio file' with specific format support (WAV and MP3) and exclusion of video. It distinguishes from siblings like 'text_to_audio' or 'music_generation' by focusing on playback rather than generation. However, it doesn't explicitly differentiate from all siblings (e.g., 'voice_clone' might also involve audio).

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?

No guidance on when to use this tool versus alternatives is provided. The description mentions format support and URL capability but doesn't explain when to choose this over siblings like 'text_to_audio' for audio creation or 'music_generation' for music playback. There's no mention of prerequisites or typical use cases.

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