open_set

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

Goes well beyond the destructiveHint annotation by explaining exactly when destruction occurs (only with discard_unsaved=True), the save-prompt failure mode when discard_unsaved=False, and that the call blocks until the set has loaded. This is the kind of behavioral depth annotations alone cannot convey.

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?

Front-loads purpose, then layers behavioral detail; every sentence adds actionable information. The middle sentence is somewhat dense but not wasteful, and the closing follow-up step is well placed.

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?

For a destructive mutation tool with no output schema, it covers the critical gaps: permission needs, failure mode, destructive branch, blocking semantics, and the recommended next call. Nothing an agent needs to invoke it correctly is missing.

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 carry the parameter meaning, and it does for discard_unsaved by spelling out both the default (False) and True behaviors and the destructive consequence. The path parameter is left implicit, but its meaning is self-evident from the .als context.

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?

States a specific verb and resource ('Open a Live Set (.als)') and the scope consequence ('replacing the current set'), which cleanly distinguishes it from siblings like new_set and save_set. An agent can identify the operation without opening the schema.

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?

Gives clear usage context: 'No UI permission needed' and the follow-up action 'then call get_song_overview'. It also prescribes confirming with the user before destructive discard. It stops short of explicitly naming alternatives (e.g., new_set for a fresh set), so it is strong but not exhaustive.

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