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

Annotations already establish the safe read-only profile, and the description adds substantial context beyond them: undocumented return fields (no output schema exists), quota counters against limits, the Valet account prerequisite, plus prompt-injection and privacy handling guidance. This is real behavioral value the structured fields do not carry.

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 the listing scope and return shape before the caveats and safety notes; every sentence carries information. It is dense and runs a bit long, but nothing is pure filler.

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?

With no output schema, the description compensates by naming the returned fields and quota counts, and it covers ownership, auth requirements, and data-handling expectations. An agent has everything needed to call it and interpret the result.

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 name and org_name are already fully documented, including the default-org behavior. The description adds nothing about these two parameters (its key/id mention refers to other tools), so baseline 3 is 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?

States a specific verb (List) plus resource (an agent's durable memories) and even enumerates the returned fields (id, key, content, pinned, expiry) and ordering (newest first). There is only one memory-listing tool among the siblings, so the boundary against set_memory/destroy_memory is unambiguous.

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?

Explicitly routes the agent: pass a key to set_memory to replace, a key or id to destroy_memory to remove, and clarifies that memories belong to agents rather than websites/apps. Missing an explicit 'when not to use this' statement, but the context for invocation is clear.

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