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

There are no annotations, so this description is the only behavioral signal. While it states the tool restores state and tools, it stays silent on side effects such as overwriting existing session state, whether restoration is idempotent, or whether authorization is needed. Given that this is a state-mutating operation (restore), the description undercuts the risk to an agent.

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?

Two short sentences with the core purpose front-loaded. There is no redundant phrasing; every phrase adds necessary context. The description is extremely concise while still conveying meaning.

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 no parameters and an output schema exists, the description only needs to cover the purpose and when to use it, which it does with the 'after reconnecting' trigger. The meaning of 'available tools' and the exact state characteristics are not detailed, but the essentials for a simple recovery utility are present.

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 tool accepts zero parameters and the schema has 100% coverage (there is nothing to document). The description does not need to explain parameters. A 4 is appropriate as the no-parameter baseline.

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 names a specific action (recover/restore) and resource (game sessions, session state, available tools). However, it does not explicitly distinguish this from sibling tools like arcade_session or arcade_status, so it is less differentiated.

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 includes a clear trigger ('after reconnecting'), which implies when to use the tool. Yet it offers no comparison with alternatives or conditions for not using it, leaving the usage guidance implicit rather than explicit.

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