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

The description discloses that the tool returns a 'fixed' example, meaning static/deterministic behavior, which adds value beyond the annotations (readOnlyHint, idempotentHint). It also notes it is 'free,' though this is ambiguous. No contradiction with annotations exists. The behavioral context is minimal but not absent.

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 short sentence with no filler or redundancy. It uses several adjectives to convey the nature of the tool without unnecessary detail, making it appropriately sized and efficient.

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 zero-parameter tool with rich annotations (readOnly, idempotent, non-destructive) and no output schema, the description sufficiently indicates that the tool returns a static example. It does not describe the example's structure, but given the tool's simplicity and demo-like nature, this is not a major gap.

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 tool has zero parameters, so the description carries no parameter burden. Baseline for 0-param tools is 4, and no gaps exist in this dimension.

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 the tool provides a 'fixed example of extracted web context,' which gives a general idea of its function as a static sample/demo. However, it lacks a clear verb and resource, and does not differentiate it from the sibling tools extract_html or read_web. It is more than a tautology but remains vague about the actual operation.

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 guidance on when to use this tool versus the sibling tools. It does not state any context or conditions for selecting this example tool over extract_html or read_web. The description implies it is a demo/sample, but this is left to inference.

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