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

Annotations already declare readOnlyHint=true and openWorldHint=true, so the safety profile is covered. The description adds nothing behavioral beyond that: no note on what fields are returned, whether master and release data differ, or any rate/auth considerations. For a read-only lookup this is a minimal but not zero gap.

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?

A single short sentence with no waste, front-loaded. It is efficient, though its brevity borders on under-specification rather than genuine conciseness.

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 id-based lookup with a required parameter, full schema coverage, an output schema, and safety annotations, so much of the burden is carried elsewhere. The description still omits any usage context or indication of what distinguishes a master from a release, leaving it only minimally adequate.

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 is a single parameter with 100% schema description coverage, including an example id ('26647'), so the schema already carries the semantics. The description adds no format or usage detail beyond what the schema provides, making the baseline 3 appropriate.

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 phrase 'Discogs master release detail' names a specific resource (master release) but contains no verb, so it only implies retrieval. It does distinguish the resource from siblings like discogs_release and discogs_artist, but only implicitly and without stating what action is performed.

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 discogs_release, discogs_artist_releases, or discogs_search. The agent must infer from the name alone that this is an id-based detail lookup rather than a search or list operation.

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