manage_storage

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

With no annotations, the description carries the burden of behavioral disclosure. It does warn that the tool can expose authentication/session secrets, which is valuable context, but it does not describe return values, error behavior, or side effects beyond the basic get/set operation.

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 compact and well-structured: a purpose sentence, a brief args list, and a security warning. Every sentence carries useful information without padding or redundancy.

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?

It covers purpose, parameter semantics, and a critical security caveat, but with no output schema it does not state what a 'get' returns or what happens when a key is missing. For a simple storage tool this is a noticeable but not severe 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?

Schema description coverage is 0%, so the description must compensate. It explains storage ('local' or 'session'), action ('get' or 'set'), and the dependency that 'set' requires value, adding meaning beyond the schema. The key parameter is left implied, but the other parameters are well clarified.

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?

States a specific verb-object pair: 'Get or set a key in the page's localStorage or sessionStorage.' This clearly identifies the resource and the supported actions, and it is implicitly distinguishable from sibling tools like manage_cookies by naming the exact storage mechanism.

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 explicit guidance is given about when to choose this tool over alternatives, nor are exclusions provided. The security warning addresses trustworthiness of sites but does not help an agent decide between this and sibling storage- or browser-related tools.

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