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

No annotations are provided, so the description carries the full burden. 'Nothing is sent' is a genuinely useful disclosure of negative space for a state-changing tool, confirming the takeover does not emit a message to the contact. It does not say whether the takeover is reversible, whether the AI can be re-enabled, or what permissions are needed.

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?

One short sentence with the action front-loaded, followed by the practical reassurance and the follow-up tool. There is little waste, though the parenthetical could be framed more explicitly as guidance.

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 one-parameter tool with no annotations and no output schema, the core behavior (halt AI replies, send nothing) is covered. Missing are how to reference the thread and whether the state change can be undone, which matter for an agent deciding to call it.

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 single parameter thread_id has 0% schema description coverage and the description never mentions it. The agent is left to infer the identifier format and where to obtain it (e.g., from list_campaign_threads or get_campaign_thread).

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?

States a specific action (stop the AI from replying) on a specific resource (this conversation), and adds the human-continuation framing. It does not, however, distinguish itself from the sibling close_campaign_thread, which reads as a similar termination action, leaving the agent to infer the difference.

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 parenthetical '(reply_in_campaign_thread)' points at the natural next step after takeover, which implies the use case. But there is no explicit when-to-use statement and no guidance on when close_campaign_thread would be preferred instead.

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