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

With no annotations, the description carries the transparency burden. It states that the tool 'Return[s] the JSON Schema' which clearly indicates a pure retrieval behavior with no side effects. It also adds the 'free' cost trait, though it does not elaborate on any other behavioral expectations beyond the output schema.

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?

One short, front-loaded sentence states the primary action, then a memorable tagline adds purpose without clutter. No wasted words.

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 zero-parameter metadata tool with an output schema, the description is complete: it names the exact artifact, version, and intended use. Nothing needed for a correct call 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?

The tool takes zero parameters and the schema already documents that, so the description has no parameter burden. Per the zero-parameter baseline, this gets a 4.

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 names a specific verb ('Return') and resource ('JSON Schema for portable agent relationship memory cards (v1)'), so an agent knows exactly what is delivered. It is clear on its own, but it does not name or differentiate from sibling tools such as validate_relationship_memory, so it stops at the 'clear but no sibling differentiation' level.

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?

No when-to-use or when-not-to-use guidance is provided, and no alternative tool is mentioned. The tagline 'Remember interlocutors, not isolated messages' gives conceptual motivation but does not tell an agent when to choose this tool over related siblings.

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