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

The description adds useful behavior beyond the annotations: notes are "always privately" saved, and the request_id mechanism is explained as a retry-safe idempotency key. However, the idempotentHint already declares idempotency, and the description does not cover failure modes, validation errors, or what happens if the same request_id is used with different content.

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?

Two tightly written sentences with no filler. The privacy constraint and retry behavior are front-loaded, and every clause adds information.

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 simple three-parameter save operation with no output schema, the description covers the privacy behavior and request_id idempotency. But with 0% schema description coverage, it is incomplete because title and content are not defined and no return-value expectations are set.

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%, so the description must carry the burden of explaining title, content, and request_id. It only explains request_id semantics (same UUID returns same note; different notes get different UUIDs) and leaves title and content completely undocumented.

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 specific verb and resource ("Saves the note") and adds an important qualifier ("always privately"). It distinguishes this save action from related siblings like draft_note or create_note by framing it as saving a note the user already reviewed and chose to save, though it does not explicitly name those alternatives.

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 phrase "the note the user reviewed and chose to save" implies when to use this tool, but there is no explicit guidance to choose linko_save_note over create_note, draft_note, or add_resource. The usage context is implied rather than stated with clear alternatives.

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