saveViewpoint

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

Annotations indicate idempotentHint=true and destructiveHint=false, and the description confirms it is a save operation. No contradictions. However, the description does not elaborate on what constitutes 'current view' or that the bookmark overwrites on duplicate (though the input schema does). Thus, it adds minimal value beyond the 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, well-structured sentence that front-loads the core purpose and includes a useful cross-reference to loadViewpoint. Every word earns its place; no redundancy or fluff.

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's simplicity and the presence of a full input schema with clear parameter descriptions, the high-level description is nearly complete. It covers the essential function and pairs with a sibling tool. A minor gap: it does not mention overwrite behavior (though the schema does). Overall, adequate for context.

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 coverage is 100%, with clear descriptions for both parameters (name and sessionId). The tool description only adds a high-level mapping ('name → view state'), which does not significantly enhance understanding of the parameters' meaning beyond the schema. At baseline, this is adequate but not exceptional.

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 the action ('save current view as bookmark'), the resource ('view state'), and directly contrasts with 'loadViewpoint' for restoration. This makes the tool's purpose unambiguous and helps differentiate it from its sibling tools like loadViewpoint and listViewpoints.

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 description explicitly mentions the complementary tool 'loadViewpoint' for restoration, providing usage context. However, it does not specify when to use this tool versus other viewpoint-related tools (e.g., setView, getView) or mention any prerequisites or limitations, slightly reducing clarity on usage boundaries.

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