back_and_snapshot

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only says what happens at a high level, but provides no details about waiting for navigation, failure handling, whether it preserves or changes session state, or what format the snapshot takes.

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 very compact and front-loaded with no filler or redundancy. It earns its place, though its brevity does leave some behavioral gaps unaddressed.

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 no-parameter tool, the description is minimally adequate, but the absence of an output schema means the agent cannot know what a 'snapshot' actually contains. It also does not clarify how this tool relates to the many sibling navigation-and-snapshot combinations.

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 the input schema confirms this with full coverage. There is nothing for the description to add about parameter meaning, so the baseline of 4 is appropriate.

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 and result: navigate the browser back and return a snapshot. It distinguishes itself from go_back alone and browser_snapshot alone by combining both, though it does not explicitly differentiate itself from other snapshot-combo siblings like navigate_and_snapshot or reload_and_snapshot.

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?

Usage is implied by the verb phrase: use this when you want to go back in history and capture the resulting page state. However, it does not explain when to prefer this over chaining go_back with browser_snapshot, or over navigate_and_snapshot, nor does it mention limitations or preconditions.

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