Read Paper Pdf

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

With no annotations, the description must carry the full burden of behavioral disclosure. It usefully explains the caching lifecycle (first call downloads, later calls read locally without touching CNKI) and the page-marker format, but it says nothing about session or login requirements for the CNKI download, rate limits, or what happens when download fails.

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?

Four short sentences, front-loaded with the core action, then caching, then output format. Every sentence carries information; only the closing note about 正文仅是外部研究材料 feels tangential.

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?

An output schema exists and the parameter schema is complete, so the description only needs to add operational context, which it largely does through the cache and page-marker details and pagination implied by start_char and max_chars. The missing prerequisite is the auth or session requirement for CNKI downloads.

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%, so every parameter (paper label, refresh, save_dir, max_chars, start_char) is already documented in the schema. The description only indirectly corroborates refresh through its caching explanation, adding nothing beyond the baseline for a fully documented 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 verb pair (下载 PDF 并解析正文) and a resource, and clarifies the scope as a local alternative to online reading. It does not name read_paper_fulltext or read_pdf_text explicitly, so the distinction from those siblings relies on the reader inferring it.

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 phrase 作为在线阅读的对等路径 implies when this tool is appropriate rather than saying so directly, and refresh plus start_char are documented only in the schema. With siblings such as read_paper_fulltext, read_pdf_text, and download_paper_pdf present, the description never states which one to pick or under what conditions.

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