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

Annotations already declare readOnlyHint=false, idempotentHint=true, and destructiveHint=false, and the description adds no further behavioral context. It does not disclose whether updates merge or replace fields, or that entryId can be an id or exact title (a detail present only in the schema). No contradiction with annotations.

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 concise sentence, but it is under-specified rather than efficiently informative. It earns its place by stating the core action, yet misses opportunities to add essential detail without becoming verbose.

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?

Given the tool accepts an array of update objects with multiple optional fields, the description lacks critical context about bulk semantics, field replacement vs. merge behavior, and required entryId formats. An output schema exists, but the overall description is inadequate for correct invocation in varied scenarios.

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%, and the description only mentions 'typed/meta fields' without explaining specific parameters like title, tags, visibility, relatedEntryIds, campaignId, or items. The schema property names are self-explanatory to some degree, but the description fails to compensate for the lack of schema descriptions.

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 clearly states an action ('Update') and a resource ('Archive mnemons'), narrowing scope to typed/meta fields. This distinguishes it from sibling tools like update_mnemons_content or update_custom_mnemons, though 'typed/meta fields' is somewhat vague without schema clarification.

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 alternatives such as update_mnemons_content or other update_* type tools. No prerequisites, exclusions, or batch behavior are mentioned, leaving the agent to infer usage from the title alone.

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