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

Annotations already declare destructiveHint=true and idempotentHint=true, so the description earns credit for adding the crucial scope clarification: destruction is local only ('Nothing in Google Workspace changes'), meaning credentials are forgotten but remote access is not revoked. It also flags the operation has no cost. It stops short of saying whether reconnection is possible or what a caller must do afterwards.

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?

Three very short sentences, each doing distinct work: what is destroyed, what is unaffected, and the cost. The most consequential fact (the external system is untouched) is front-loaded immediately after the action statement.

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?

A no-parameter, no-output-schema teardown tool whose annotations already cover safety and idempotency. The description supplies the one thing not in structured data — the local-versus-remote blast radius — which is exactly what an agent needs before calling a destructive disconnect.

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?

Zero parameters with an empty schema, so there is no parameter semantics for the description to carry. Baseline 4 applies; nothing here is misleading or missing.

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 concretely what is removed — the service account key and the mailboxes — which is more specific than a restatement of 'disconnect'. It does not, however, name the counterpart (google_connect) or distinguish itself from the other *_disconnect siblings (m365_disconnect, directory_disconnect).

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 only implied: the agent must infer this is the teardown step for a Google Workspace integration. No explicit when-to-use, no when-not-to-use, and no alternative tool is named. The trailing 'Free' hints that this is a cheap/safe housekeeping action but doesn't spell out the condition that selects this tool.

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