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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds useful semantic context about what a view is and how its identifier is consumed, but says nothing about the return shape (names, ids, counts) despite the absence of an 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?

Two tight sentences with no filler: the first defines the entity, the second states the follow-up action. The definition is front-loaded and 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?

For a zero-parameter read-only list tool with no output schema, the description supplies the entity definition and the downstream consumption pattern, which is enough to call and use it. Only the returned fields (id/name) are left unspecified, a minor gap.

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?

Zero parameters, so the baseline is 4. The description goes slightly beyond by explaining that a view carries a 'viewId' consumed by search_mentions, clarifying the identifier's meaning even though no input parameter exists here.

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 defines the resource concretely — saved views are named filters over mentions, with examples ('Negative about us', 'Needs a reply') — which distinguishes it from siblings like list_segments or get_filters. It stops short of an explicit 'returns the list of your saved views' statement, leaving the return implicit, but the resource and its role are 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?

It clearly states the downstream action: pass a view id as viewId to search_mentions to read what the view selects. That routes the agent well, though there is no explicit statement of when to call list_views versus list_segments or get_filters, so a competing alternative is not fully resolved.

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