添加/修改 DNS 解析记录

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

Beyond the annotations, it discloses the full behavioral profile: duplicate check on host/type, add-vs-modify decision, save and read-back verification, and the pause-with-screenshot behavior on login expiry or slider challenges. It also states it will not blindly continue clicking and returns step trajectories plus failure screenshots.

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 dense but well organized: purpose, flow, mode behavior, and failure handling all appear in a logical order. It is longer than minimal, but the tool is complex enough to justify each operational sentence.

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?

It covers the workflow, mode constraints, expected outputs (step trajectory and screenshots), and recovery path. No output schema exists, so the description's output disclosure is valuable and sufficient for an agent to invoke and verify the tool.

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 100%, so the baseline is 3; the description adds meaning by explaining the duplicate-detection rule for subDomain/recordType and the mode decision. It does not add new details for ttl/line/cdpPort, but those are already well documented in the schema.

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 high-level operation: add or modify a DNS record for a specified domain in the DNSPod console, and details the exact workflow. This clearly distinguishes it from generic browser/sibling tools like take_screenshot or configure_security_group.

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 provides clear context for mode selection (auto/create/update) and names interact_element as a manual fallback for auth/slider failures. It does not explicitly enumerate sibling tools as alternatives, but the intended use is unambiguous.

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