CloakMCP

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions that the tool 'Returns an updated snapshot,' which adds some context about output behavior, but fails to address critical aspects like whether this action is safe (non-destructive), requires specific permissions, or has side effects (e.g., affecting page state).

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 appropriately sized and front-loaded, with the core purpose stated first ('Navigate back in browser history. Returns an updated snapshot.') followed by parameter details. Every sentence earns its place without 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 low complexity (one parameter) and the presence of an output schema (which handles return values), the description is mostly complete. It covers the action and parameter semantics adequately, though it lacks usage guidelines and fuller behavioral context, which are minor gaps.

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?

The description includes an 'Args' section that explains the 'page_id' parameter as 'Target page ID,' adding meaning beyond the schema's minimal coverage (0%). Since there is only one parameter, this compensates well, though it could provide more detail (e.g., format or source of the ID).

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 tool's purpose with a specific verb ('Navigate back') and resource ('browser history'), and distinguishes it from siblings like 'cloak_forward' by specifying direction. However, it doesn't explicitly differentiate from other navigation-related tools like 'cloak_navigate' beyond the 'back' action.

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?

No guidance is provided on when to use this tool versus alternatives. The description lacks context about prerequisites (e.g., requires an existing page with history), exclusions, or comparisons to siblings like 'cloak_forward' or 'cloak_navigate' for general navigation.

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