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Jewelry Maker Calc – Karat & Alloy Calculator
x402
Jewelry Maker Calc – Karat & Alloy Calculator is a paid API for AI agents from jewelry-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-11-03).
Converts a gold karat to fineness and purity percentage, calculates how much alloy to add to fine gold to reach a target karat, or finds the resulting karat when mixing two pieces of gold.
Price / call$0.02
Success—
StatusUnknown
How this service works
Gold karat to fineness and percent, and the alloy to add to fine gold to reach a target karat, or the karat of a mix.
Output
Returns the fineness (parts per thousand), gold percentage, alloy percentage for the given karat; or the grams of alloy metal needed and total alloyed grams to reach a target karat from fine gold; or the resulting karat when combining two pieces. Includes a summary field and disclaimer.
Example use cases
Alloy fine gold to target karat
“I'm starting with 20 grams of fine 24k gold and want to cast in 14 karat — how much alloy do I need to add, and what's the fineness of 14k?”
Check gold purity of a karat
“What's the fineness and gold percentage of 9 karat gold? I need to confirm what I'm working with before I buy.”
Find karat of mixed gold pieces
“I'm melting together 8 grams of 18 karat gold and 4 grams of pure alloy metal — what karat will the final mixture be?”
Technical details
Endpoint
GEThttps://jewelry-calc.x402tookit.com/karat-alloy?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need precise jewelry-industry karat-to-fineness conversions, alloy addition calculations for goldsmithing, or karat blending math for combining two pieces of gold. It is purpose-built for jewelers and metalworkers, covering the three core gold alloy scenarios in one API.
Side effects
- Missing required karat or input parameters returns an error or null results
- Karat value outside 1–24 range may return validation errors
- Conflicting mix parameters (e.g. providing both karat and mix fields simultaneously) may cause unexpected results
- Network or payment failure returns HTTP 402 or 5xx
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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