get_rack_chains

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

With no annotations, the description carries full responsibility. It discloses the returned fields (chain name, mute, solo, etc.) and the device requirement. This goes beyond a simple tautology. It doesn't mention error behavior or edge cases, but for a read-only getter, the provided behavioral details are solid.

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 compact and front-loaded with the main purpose. The first sentence states the action, then the precondition, return fields, and parameter details follow. Every sentence adds value without redundancy.

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 is a simple read-only list operation with two parameters and an output schema. The description covers purpose, prerequisite, returned data, and parameter meanings. It is fully sufficient for an agent to select and invoke the tool correctly, especially with the output schema providing additional structure.

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 explain parameters. It does: both track_index and device_index are described as zero-based indices, with device_index further qualified as the rack device. This adds meaning that the schema lacks, though it could also mention bounds or validation.

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?

Clearly states the verb and resource: "Get all chains in an instrument or effect rack device." This is specific and distinguishes from sibling tools like get_drum_chains by explicitly stating the device type (instrument or effect rack).

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?

Provides a clear precondition: "The device must support chains (i.e. be a rack)." This tells when it is applicable, but it does not explicitly mention alternatives or exclusions relative to sibling tools like get_drum_chains. The guidance is useful but incomplete for disambiguating from similar chain-related tools.

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