web_url_read

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

The description states a read operation, consistent with the readOnlyHint annotation, and adds that it returns content from a URL. However, it provides no additional behavioral details beyond what annotations already imply, such as output format or handling of dynamic content.

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 short and front-loaded with the core purpose. The second sentence is somewhat redundant and awkwardly phrased ('further information retrieving'), but it does add a usage hint without being verbose.

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 the tool has six parameters including section, readHeadings, and paragraphRange, the description only says 'Read the content' without explaining how output varies with these options. The schema describes parameters well, but the absence of an output schema and limited description leaves some ambiguity about return behavior.

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 schema already documents all six parameters. The description adds no parameter-specific meaning, keeping this at the baseline.

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 reads content from a URL with a specific verb and resource. It is distinguishable from the sibling search tool, though it doesn't explicitly differentiate itself.

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?

'Use this for further information retrieving to understand the content of each URL' provides a clear intended use case as a follow-up to retrieving URLs. It lacks explicit exclusions or alternative guidance, but the sibling name makes the contrast evident.

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