Tool Unlock Pdf

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

No annotations are provided, so the description must carry behavioral disclosure by itself. It does state the key behavior of producing a decrypted output file and clarifies that only the user/open password is needed, which is useful. But it does not disclose side effects, whether the original file is preserved, or what happens when overwrite is used.

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 three short purposeful sentences: it states what the tool does, adds the crucial password distinction, and gives workflow guidance. Every sentence earns its place, and the most important information is front-loaded.

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?

Given that the tool has few parameters and an output schema exists, the description is mostly sufficient for basic invocation. The main contextual gaps are the meaning and default behavior of 'output' and 'overwrite', plus failure behavior on an incorrect password. These are not fatal, but they require the agent to infer.

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 schema description coverage is 0%, so the description needs to compensate. It does clarify the password parameter meaningfully ('user（打开）密码即可，无需 owner 密码') and implies the output parameter via '输出解密文件'. However, 'path' and especially 'overwrite' remain underexplained in the description.

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 clearly states a specific action ('解锁加密 PDF') and a concrete result ('输出解密文件'), making the tool's purpose obvious. It does not explicitly name a sibling to differentiate from, but the verb and resource are specific enough to separate it from protect, compress, and metadata tools.

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 statement '解锁后再走其他工具' gives some workflow context by implying this tool should be run before other PDF tools when a password is present. However, it does not explicitly state when not to use it or compare it with alternatives such as tool_protect_pdf or tool_check_repair.

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