apply

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

With no annotations, the description carries the full burden and does well: it discloses backup creation, a scoped edit preserving unrepointed entries byte-for-byte, a precondition that it refuses while Traktor is running, and that it returns written results plus post-apply app guidance. It does not cover permissions or failure atomicity, but the main behavioral traits are exposed.

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 purpose is front-loaded, and the description is compact with no filler. The middle clause about byte-for-byte preservation is dense and domain-specific, but it is not wasted text.

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?

The tool has no input parameters and has an output schema, so the description only needs to cover execution semantics and conditions. It does that, including backup behavior, the Traktor-running refusal, and return guidance, though it could more explicitly tie itself to the plan sibling as a prerequisite.

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 zero parameters, so the schema has nothing for the description to explain. The baseline for a no-parameter tool is 4, and no parameter-level ambiguity is introduced.

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 states a specific action: writing an existing plan into a collection, including backup and edit behavior. It is clearly not the plan-creation or purge tool, though it does not explicitly name which sibling to use instead.

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?

Usage is implied: this is the execution step after a plan exists, and it refuses while Traktor is running. It does not explicitly say when to choose apply versus status, plan, or purge, nor does it name alternatives.

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