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

No annotations are provided, so the description itself must convey side effects. It states the core behavior (forget everything, start fresh) and that it returns a fresh fragment, but it does not explain side effects, reversibility, how token affects the reset, or what a 'fragment' concretely represents. For a tool with no annotation support, this leaves too much unspecified.

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 front-loaded with the main action and a short return statement. No wasted text or labels. It loses a point because it leans on poetic phrasing rather than precise structure, but it's not bloated.

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 has a nontrivial parameter, no annotations, no explanation of 'fresh fragment', and a sibling tool that could help define scope, the description is insufficient: can be battery in isolation. It describes the domain effect but not how to invoke it, what to pass, or when it fits relative to 'next'.

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% and the description never mentions the optional 'token' parameter. An agent has no way to know whether token is a session identifier, a context refill, a store key, etc. The schema provides only the type string, and the description adds no meaning.

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 indicates a reset/restart behavior: 'Forget everything you have seen' plus a concrete output, 'Returns a fresh fragment.' This gives an agent a usable mental model of the tool. It doesn't explicitly differentiate from the sibling tool 'next', so it stays at 4 rather than 5.

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 advice on when to use this tool instead of 'next' or any other alternative. The phrase 'begin again' implies a starting-over scenario, but no actual selection guidance is provided. This is the definition-level guidance gap.

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