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

No annotations are supplied, so the description carries the full disclosure burden, yet it says nothing about accepted input formats, what parsing means, error behavior, or output shape. It adds zero behavioral context.

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?

It is very short, but not concisely informative: 'Parse Date: Parse date.' is a duplicated restatement rather than a front-loaded explanation, so the brevity reflects under-specification rather than economy.

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?

With no annotations, no output schema, and two vaguely documented parameters, the description should explain what parsing produces and which formats are accepted. It provides none of this, leaving the tool effectively unusable based on the definition alone.

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% (both 'date' and 'value' have descriptions, albeit vague ones like 'Value to process'). Per the rubric, high schema coverage establishes a baseline of 3 even when the description adds no parameter detail.

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 'Parse Date: Parse date' is a tautology that merely restates the tool name, offering no verb-plus-resource specificity beyond what the name already conveys. It does not differentiate from the many sibling parsing/date tools such as x402-date, x402-date-diff, x402-format-date, or x402-cron-parse.

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 whatsoever about when to use this tool versus alternatives like x402-date, x402-date-to-epoch, or x402-cron-parse. No context, prerequisites, or exclusions are provided.

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