batch_fetch_urls

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

The description mentions parallel processing and faster performance, but lacks details on rate limits, error handling, or response format. With no annotations, more behavioral context would be beneficial.

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 very concise: a single sentence with key information front-loaded. No wasted words.

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 batch fetch tool with no output schema and no annotations, the description is moderately complete. It explains the basic purpose and parallelism, but lacks details on limits, errors, or output structure.

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 parameter schema already describes the 'urls' parameter as a URL array. The description adds no additional meaning beyond that, such as URL format or constraints. Schema coverage is 100%, but the description does not compensate.

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 the tool's function: batch extraction of multiple web pages with parallel processing. It distinguishes itself from siblings like fetch_url (single URL) and search 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 description implies usage for multiple URLs, but does not explicitly state when to use vs. alternatives like fetch_url for single URLs or search tools for finding content. No when-not-to-use guidance.

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