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

Annotations already declare destructiveHint=true, idempotentHint=true, readOnlyHint=false, and openWorldHint=false, so the safety and idempotency profile is covered. The description adds only the 'custom' qualifier and no new behavioral context such as confirmation requirements, authorization needs, or side effects.

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 front-loaded phrase with no filler, so it is structurally efficient. It is arguably too terse for a destructive operation, but it does not waste words.

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 destructive tool, the description is incomplete: it omits parameter semantics, call prerequisites, and any usage guidance. The annotations cover the safety profile, but the undocumented actor_id and absence of when-to-use context leave real gaps.

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 actor_id parameter, how a persona is identified, or whether the parameter is required. It adds no meaning beyond the input schema's type declaration.

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 a specific verb (删除/delete) and resource (自定义 Persona/custom Persona), and the verb distinguishes it from siblings persona_create, persona_list, and get_persona_status. An agent can identify the action without opening the schema.

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 when-to-use guidance, prerequisites, or warning about irreversibility. It also does not contrast with any sibling, such as persona_list for inspecting personas instead of deleting them.

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