get_rack_chains

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

With no annotations, the description carries the full burden. It simply says 'get chains' without disclosing the return format, whether it's a read-only operation, prerequisites (e.g., the device must be a rack), or error conditions. The behavior beyond the basic verb is opaque, leaving the agent to guess what happens if the device is not a rack or what the chains structure looks like.

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 short and front-loaded with a clear verb phrase. The parameter list adds bulk but is redundant with the schema; still, the overall size is appropriate. It earns a 4 rather than 5 due to the unnecessary repetition of the parameter names and titles.

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 tool has no output schema and no annotations, the description must explain what 'chains' means and what the agent receives after the call. It provides none of that. The complexity is moderate but the missing return value information and lack of context about rack devices make it incomplete for an agent to chain this into subsequent operations.

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 parameter descriptions are essentially tautological: 'track_index: The index of the track' and 'device_index: The index of the rack device'. They add almost no meaning beyond the property names and titles. The description does not clarify whether indices are zero-based or one-based, or how to identify a valid rack device. With 0% schema description coverage, this is insufficient.

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 ('Get chains') and the resource ('instrument or effect rack'). It distinguishes from siblings like select_rack_chain (which is about selection) and get_chain_device_parameters (about parameters), though it doesn't explicitly mention alternatives. A stronger description could say 'returns the list of chains' to fully clarify the return value.

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?

There is no guidance on when to use this tool versus alternatives such as select_rack_chain or get_chain_device_parameters. The description only states what it does without context for selecting it or exclusion criteria. For instance, it doesn't say 'use this to inspect the rack structure before selecting a chain' or similar.

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