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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered structurally. The description adds meaningful scope context: notes are returned across platforms and across all lifecycle states, and engagement snapshots are included "when available." It says nothing about pagination or ordering, so additional disclosure is limited.

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 tight sentences with no filler; the platform scope is front-loaded and the status/snapshot detail follows. Every clause carries 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?

An output schema exists, so return-value explanation is unnecessary, and all six parameters are optional. However, for a 6-parameter, 9-value-status filter tool, the description omits how filtering narrows results and what the default/unfiltered behavior yields, leaving the agent to infer this from the schema alone.

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 67%, with the two enum params (status, platform) having no descriptions in the schema at all. The description's mention of "scheduled, failed, and posted notes" hints at the status filter but does not explain the status/platform/query/limit interactions or defaults. It neither compensates fully for the coverage gap nor is entirely silent.

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 gives a specific verb and resource ("List the user's notes") and scopes it to "every supported note platform," plus clarifies the status coverage (scheduled, failed, posted). It is clearly the collection-level counterpart to get_note, though it never explicitly names siblings like list_scheduled_items or list_drafts to sharpen the boundary.

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 explicit when-to-use guidance and no alternatives are named, even though several siblings overlap heavily (get_note for a single note, list_scheduled_items, list_drafts). The reader must infer from the tool name and status list that this is the cross-platform all-statuses listing.

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