AbletonMCP

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the tool creates a MIDI clip, implying a write operation, but does not cover critical aspects like whether this requires specific permissions, if it overwrites existing clips, what happens on failure, or any rate limits. The description is minimal and misses key behavioral traits needed for safe and effective use.

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 a single, efficient sentence that directly states the tool's purpose without unnecessary words. It is front-loaded with the core action and target, making it easy to parse quickly. Every part of the sentence contributes to understanding the tool's basic function.

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 the complexity of a write operation with 3 parameters, no annotations, and no output schema, the description is incomplete. It lacks details on behavioral traits, parameter meanings, error handling, and return values. For a tool that creates resources in a likely stateful environment like a DAW, this minimal description is insufficient for reliable agent use.

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 description coverage is 0%, meaning parameters are undocumented in the schema. The description adds no information about what 'track_index', 'clip_index', or 'length' mean, their valid ranges, or how they interact (e.g., if 'clip_index' refers to a slot in the track). This fails to compensate for the schema gap, leaving parameters ambiguous.

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 action ('Create a new MIDI clip') and specifies the target resources ('in the specified track and clip slot'), which distinguishes it from siblings like 'create_midi_track_tool' or 'add_notes_to_clip_tool'. However, it does not explicitly differentiate from all siblings, such as 'fire_clip_tool' or 'stop_clip_tool', which also involve clips but with different purposes.

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 provides no guidance on when to use this tool versus alternatives, such as 'create_midi_track_tool' for creating tracks or 'add_notes_to_clip_tool' for modifying existing clips. It lacks context on prerequisites, like whether a track must exist, or exclusions, such as not using it for audio clips. This leaves the agent to infer usage from the name alone.

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