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

The annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false. The description only repeats this with 'Nothing changes' and adds no meaningful behavioral detail beyond the annotations, such as return shape, lookup behavior, or error handling.

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 short, but it is not cleanly structured: 'get next again' is opaque and 'Nothing changes' is redundant with the annotations. It is concise without being fully clear or front-loaded.

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 simple, optional-parameter, read-only status tool, the annotations cover the safety profile and the description gives partial parameter guidance. However, with no output schema, the description should more clearly explain what status information is returned and what 'next again' means.

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 carry parameter meaning. It partially does: 'Give visit, or key to find your latest visit' explains the role of both optional parameters, but it does not clarify format, precedence when both are supplied, or what happens if neither is provided.

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 uses a concrete verb ('See') and names the resource ('visit'), so it is not a pure tautology. However, 'get next again' is unclear, and it does not distinguish this read-only status check from siblings such as enter, close, or say.

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 gives an explicit usage trigger: 'Use it when you have lost track.' It does not name alternatives or exclusions, but the when-to-use context is present and no misleading guidance is given.

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