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

Annotations declare destructiveHint=true, readOnlyHint=false, and idempotentHint=true. The description adds valuable context beyond these: 'Nothing is sent to customers' clarifies a common worry for a conversation-mutating tool, and states the effect (moves back to inbox). The destructive nature is not fully explained, but the customer-facing safety note is meaningful added value.

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 compact sentence with WRITE prefix, effect, side-effect clarification, and endpoint. Front-loaded and zero waste.

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 single-parameter batch mutation, the definition covers purpose, limit, side-effects, and endpoint. It lacks return-value detail and any permissions/error context, but no output schema exists so the gap is minor.

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 coverage is 100% and the single parameter (conversation_ids, 1-25) is fully documented in the schema. The description's 'up to 25 conversations' merely restates the maxItems constraint rather than adding syntax or format detail. Baseline 3 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?

States a specific verb (reopen/move back to inbox) and resource (conversations), with the batch limit (25). Clearly distinguished from its sibling helpwise_close_conversations, the inverse operation.

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?

Implied usage (reopen closed conversations) is clear against the close sibling, but there is no explicit when-to-use or when-not guidance, no preconditions, and no mention of alternatives. Adequate but leaves inference to the agent.

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