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 and provides none — nothing about whether both params are optional, what happens when one is omitted, units (volts/ohms/amps), or the solver behavior. A pure calculation is low-risk, which caps the harm, but transparency is still essentially 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?

Two words separated by a colon and repeated — the title is identical to the name and contributes zero information. It is short, but the brevity reflects under-specification rather than conciseness earned by well-chosen wording.

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 2-parameter formula tool with no annotations and no output schema, the description is completely inadequate: it neither identifies the formula (I = V/R), the output (current), nor the units, leaving the agent to guess the meaning of an entire tool from its name.

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% and each property has a description ('Voltage to process', 'Resistance to process'), so the schema itself does the heavy lifting and baseline 3 applies. The description adds nothing on units or the relationship between the two inputs, which would have been valuable for a physics formula.

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 'Ohms Law I: Ohms Law I' is a tautology that merely restates the tool name. It does not say what the tool computes (current from voltage and resistance) nor distinguish it from siblings x402-ohms-law-r and x402-ohms-law-v, which share the same parametric family. Without domain knowledge of the Ohm's law trio, an agent cannot tell which of the three to call.

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?

No when-to-use guidance and no mention of the sibling tools x402-ohms-law-r and x402-ohms-law-v, exactly the alternatives an agent must disambiguate between. The description gives no signal that this is the current-solving variant.

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