Save replay buffer

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

With no annotations, the description carries the full burden. It adds one valuable behavioral detail: the buffer continues recording after saving. However, it does not disclose prerequisites (e.g., whether the replay buffer must be active), error behavior, or side effects on the buffer contents.

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 a single sentence with the action front-loaded and a parenthetical that adds crucial nuance. It contains no redundant or filler wording.

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?

This is a simple, zero-parameter tool with an output schema present, so the description need not cover return values. It covers the core action and the key side effect, but could be more complete by mentioning that the replay buffer must be active to succeed. Still, it is adequate for the tool's simplicity.

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 has zero parameters, and schema description coverage is vacuously 100%. Per the rubric, 0 params earns a baseline of 4. The description correctly adds no parameter-level detail because there is nothing to document.

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 states a clear action: 'Save the current replay buffer to disk.' It identifies the specific resource and destination. The parenthetical 'the buffer keeps recording afterwards' differentiates it from stop_replay_buffer, making its purpose unambiguous.

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 implies when to use the tool (when you want to preserve the buffer without stopping recording), but it does not explicitly compare to sibling tools like stop_replay_buffer or mention when not to use it. Usage context is inferred rather than stated.

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