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

No annotations are provided, so the description carries the full behavioral burden. It discloses nothing about whether this is a pure calculation, what happens with missing parameters, output format, or any side effects. The one-word tautology 'Depreciation' conveys 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?

The description is a redundant repetition of the tool name with no front-loaded useful information. Brevity here reflects under-specification rather than conciseness; no sentence earns its place because the only content is a duplicated word.

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 8 parameters, no required fields, no output schema, and no annotations, the description is completely inadequate. An agent cannot determine how to invoke this tool or what it returns. Critical details like depreciation method options, unit conventions for life/years, and output structure are entirely absent.

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 coverage is 100%, but the schema descriptions are boilerplate ('Cost to process', 'Life to process', etc.) that add no real meaning. The tool description adds nothing to clarify whether 'life' is in years, what 'method' values are accepted (no enum), or how 'salvage' and 'residual' differ. With 8 loosely described parameters, the description should compensate but does not.

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 'Depreciation: Depreciation' is a tautology that merely restates the tool name. While the name signals a depreciation calculation domain, the description adds no specificity about what is being computed (e.g., straight-line depreciation schedule, asset book value over time). It does not differentiate this tool from related finance siblings like x402-simple-interest or x402-roi.

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 alternatives. With 8 parameters like cost, salvage, life, method, and residual, an agent has no indication of which combination applies to which depreciation scenario (straight-line vs declining balance). No exclusions or prerequisites are stated.

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