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stop_clip

Halts playback of a specific clip slot in your Ableton Live session. Provide track and clip indices to immediately stop that clip.

Instructions

Stop a clip slot.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
clip_indexYes0-indexed clip slot position
track_indexYes0-indexed track position

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv1.0.0

TDQS

C2.8/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full behavioral burden, and it says almost nothing. It does not state whether the clip must currently be playing, whether stopping is idempotent, what happens to queued clips, or what errors occur on an invalid index.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

It is a single front-loaded sentence with zero filler, which is structurally clean. But the brevity tips into under-specification: the sentence is too thin to justify itself for a tool with real behavioral questions.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a simple two-parameter mutation with no annotations and no output schema, the description should at least clarify effect and failure modes. It leaves the agent guessing about scope (one slot vs. the whole track) and about what a successful stop returns.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, with both track_index and clip_index documented as 0-indexed positions, so the schema already does the heavy lifting. The description adds no indexing convention, range, or coordinate context beyond that, which is the expected baseline.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb and resource ('Stop a clip slot'), so the agent knows this halts playback of one clip slot. However, it offers no differentiation from nearby siblings like stop_all_clips, stop_playback, or fire_clip, so the agent must infer scope from the name alone.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

There is no when-to-use guidance and no mention of alternatives, even though stop_all_clips and stop_playback sit in the same sibling set. The agent gets no rule for choosing this tool over stopping everything.

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