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

With no annotations, the description alone carries the burden of behavioral disclosure, but it only mentions the outcome ('extract clean text') without conveying any behavioral traits such as error handling, handling of dynamic content, rate limits, or whether the operation is read-only. This is a significant transparency gap.

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, efficient sentence with no filler. It is appropriately sized for a simple tool and front-loads the core action, making it easy to process quickly.

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?

Despite being a simple tool, the description is incomplete for an AI agent: it does not mention the return format, possible errors, or any limitations. Since there is no output schema and no annotations, the description should provide more context but does not.

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 has one parameter (url) with no description and 0% schema coverage, so the description should compensate. 'From any URL' hints at the parameter but does not explain URL format, required protocol, or specific constraints. It adds only marginal meaning beyond the 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 clearly states the tool's function: 'Extract clean text from any URL' uses a specific verb (extract), resource (URL), and output (clean text). Even without sibling tools, this is unambiguous and immediately distinguishes the tool's purpose.

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 provides no guidance on when to use this tool versus alternatives, nor any prerequisites or context. It is a bare statement of functionality with no usage scenarios or exclusions.

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