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

Adds substantial behavior beyond annotations: ~30 second model latency, quota consumption, and an explicit statement of side-effect scope (only writes copy, no creation/invites). The PROFILE=回退 note hints at fallback behavior though it is cryptic. Annotations (readOnlyHint=false, openWorldHint=true) are consistent and not contradicted.

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?

Front-loaded with the login requirement and capability gate, then latency/cost, scope, and the follow-up chain. Dense and mostly efficient, though the bracketed shorthand (【组合链】, PROFILE=回退) is terse enough to be slightly opaque.

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 no-output-schema draft-generation tool, the description covers the key operational facts (auth, capability, latency, cost, scope, follow-up). Return-format detail is not needed without an output schema, so the coverage is largely adequate.

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 schema already documents both pairId (match-list id vs proposal id) and organizationId clearly. The description adds no additional parameter meaning, so baseline 3 applies.

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 action (只写文案/drafts copy for a match exchange activity), explicitly clarifies the boundary (不建活动不邀请 - does not create activities or send invites), and names the sibling that performs the actual creation (create_organizer_activity). An agent can distinguish it from create_organizer_activity, though the resource noun relies somewhat on the title.

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?

It gives prerequisites (需要登录, 需撮合管理和发布能力) and a clear follow-up path: after confirming the copy, use create_organizer_activity. It effectively implies when to use this tool versus the creation tool, but doesn't spell out explicit when-not scenarios beyond the creation caveat.

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