thunder_rest

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

With no annotations, the description carries the full burden, and it does disclose one meaningful trait: cookies and fingerprint persist for the next session, so closing does not wipe state. It says nothing about whether the close is immediate, what happens to in-flight page state, or whether it is reversible.

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, front-loaded with the action, with the persistence note second. Nothing is wasted, though the extreme terseness contributes to the ambiguity of 'body'.

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 zero-parameter, no-output tool the definition needs only to be unambiguous about effect, and the persistence note is a genuinely useful addition. The residual gap is what 'close' actually ends (page vs. entire session) relative to the other thunder_* tools.

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 takes zero parameters, so there are no argument semantics to explain; the description is not misleading about inputs. Baseline 4 applies.

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?

"Close the body" is a verb plus an ambiguous object — it does not plainly say it ends the browser session/page, an inference helped only by the presence of the sibling thunder_open. An agent can guess it is the counterpart to opening, but the metaphor 'body' makes the resource unclear without prior knowledge of the toolkit.

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?

There is no statement of when to call this versus thunder_open or any other sibling, and no prerequisite or exclusion is given. The only usage signal is the implied 'when done' framing, which the agent has to infer.

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