fetchCsdnArticle

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

Annotations already declare readOnlyHint=true, openWorldHint=true, idempotentHint=true, and destructiveHint=false, so the safe read-only profile is established. The description adds the notion of 'full article content' but discloses nothing about potential anti-scraping blocks, page variation, or response behavior, which would have raised the score.

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 sentence with no filler words. It is slightly thin on context, which keeps it from a 5, but it is appropriately sized for a one-parameter tool.

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 simple one-parameter read-only tool, the description is minimally adequate: annotations cover the safety profile and the schema covers the parameter. However, with no output schema, it does not describe the return format, failure modes, or content limitations, which an agent might need to handle results correctly.

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?

There is a single url parameter with 0% schema description coverage, so the description carries some weight. The phrase 'csdn post URL' clarifies the expected parameter meaning beyond the schema's generic 'uri' format, but it adds little else about format, validation, or accepted URL variants.

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 (Fetch) and resource (full article content from a csdn post URL), making the tool's function clear. However, it does not explicitly differentiate itself from siblings like fetchJuejinArticle or fetchWebContent beyond the platform name, so it stops short of a 5.

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 explicit guidance on when to use this tool vs. alternatives such as fetchWebContent or fetchJuejinArticle. The CSDN-specific wording implies its context, but no exclusions, prerequisites, or routing logic are provided.

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