close_search_session

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

With no annotations, the description carries the burden of behavioral disclosure. It does mention releasing a browser page, which is a concrete side effect. However, it does not disclose whether the operation is irreversible, destructive, or whether any session data is lost. It adds some context but could be richer.

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, concise sentence that directly conveys the action and its effect. It is front-loaded with the primary purpose and contains no extraneous wording. Every word earns its place.

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?

The tool is simple with one parameter and an output schema exists, so return values needn't be explained. However, the description omits usage context, such as lifetime management or prerequisites (e.g., that a session must have been created first). An agent receives no indication of when this should be called relative to other operations, making it incomplete for effective use.

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 does not mention the session_id parameter at all. The parameter is only documented in the schema as a required string, but nothing explains what value to pass or how it identifies the session. The description fails to compensate for the coverage gap, leaving the agent without guidance on this critical input.

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 states the verb 'close' and the resource 'search session', and adds the effect of releasing the associated browser page. This distinguishes it from the sibling tool create_search_session, which does the opposite, and from other search operations. The purpose is 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?

No guidance is given on when to invoke this tool versus alternatives. It does not mention that it should be used after a search session is no longer needed, or any conditions for use. The description simply states what it does without contextualizing when it is appropriate.

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