save_artist_new_releases

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

With no annotations, the description carries the full burden of disclosing side effects, and it does state that this tool saves to Your Library and skips albums already saved via a diff. It could add more about reversibility or auth, but the core mutating, idempotent behavior is clear.

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 a single efficiently worded sentence that front-loads the action and adds the worthwhile diffing detail in parentheses. Every word contributes to understanding the tool's purpose and behavior.

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 composite find-and-save tool with no output schema or annotations, the description covers purpose, target resource, and side-effect behavior, while the schema covers parameters. The main gap is that it does not describe what the tool returns after saving, which an agent might need when crafting a user-facing response.

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 100%, so the schema fully documents all four parameters and the description adds no additional parameter-level semantics. The baseline of 3 applies because the description correctly reflects the overall task but does not enrich any individual parameter meaning.

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 concrete action and resource: find new releases for an artist and save unsaved albums to Your Library. It also conveys the unique diffing behavior against /me/library/contains, which clearly separates it from generic save tools or read-only discography tools.

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?

The intended use is implied: call this when you need to find and save an artist's new releases while avoiding duplicates. However, it never explicitly says when to prefer this over alternatives like generic save_to_library or read-only release lookup tools, or when not to use it.

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