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

With no annotations available, the description carries the full burden of behavioral disclosure. It discloses nothing—no side effects, outputs, or operational characteristics—so an agent has no way to predict what invoking this tool will do.

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, but its brevity is under-specification rather than conciseness. The repeated phrase 'Reduced Planck' conveys no information and fails to front-load any meaningful content.

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-input tool with no output schema, the description must at least state what the tool returns or accomplishes. It does neither, leaving the agent with only a name and no way to determine the tool's purpose or expected result.

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 and the schema coverage is 100%, so there are no parameter semantics to document. Per the baseline for tools with no parameters, this dimension is acceptable even though the description itself is unhelpful.

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 is a pure tautology: 'Reduced Planck: Reduced Planck' restates the tool name without adding a verb, resource, or outcome. It does not say what the tool computes or returns, and it fails to distinguish itself from the closely named sibling x402-planck-constant.

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, what problem it solves, or when to prefer a sibling such as x402-planck-constant. The description provides zero contextual signal for an agent deciding between tools.

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