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Karatology Metal Price API

Simple pricing for live metal prices

Every plan includes every endpoint: latest, spot, karat, fineness, melt value, ratios and usage. Plans differ only by volume, speed, keys and support. Start free, no card required.

Billing interval

Yearly billing is 10 months' price for 12 months of access.

Showing monthly prices.

Karatology Metal Price API plans

  • Free

    Try every endpoint before you buy.

    $0/month

    No card required. Test every endpoint.

    Start free
    • 10 calls a month
    • 5 requests a minute
    • 1 API key
    • Documentation
    • Every endpoint included

  • Starter

    For a single shop showing live prices.

    $15/month

    Billed monthly, or $150 a year.

    Choose Starter, billed monthly
    • 500 calls a month
    • 10 requests a minute
    • 1 API key
    • Email support
    • Every endpoint included

  • Basic

    For busy storefronts and price boards.

    $29/month

    Billed monthly, or $290 a year.

    Choose Basic, billed monthly
    • 5,000 calls a month
    • 30 requests a minute
    • 2 API keys
    • Email support
    • Every endpoint included
  • Recommended

    Pro

    For apps, buyers and multi-store jewelers.

    $59/month

    Billed monthly, or $590 a year.

    Choose Pro, billed monthly
    • 25,000 calls a month
    • 120 requests a minute
    • 5 API keys
    • Priority email support
    • Every endpoint included

  • Business

    For platforms serving many merchants.

    $149/month

    Billed monthly, or $1,490 a year.

    Choose Business, billed monthly
    • 100,000 calls a month
    • 600 requests a minute
    • 10 API keys
    • Priority support and usage export
    • Every endpoint included

Enterprise

Custom volume, invoice billing, licensed benchmark prices on request.

Contact us at contact@karatology.com
Compare plans

Everything side by side

The same endpoints and the same data on every plan. Choose by how many calls you make and how fast you make them.

Metal Price API plan comparison
FeatureFreeStarterBasicProBusinessEnterprise
Monthly price$0$15$29$59$149Quote
Yearly price$0$150$290$590$1,490Quote
Calls included a month105005,00025,000100,000Custom
Grace before calls pauseNone (stops at 10)10% (up to 550)10% (up to 5,500)10% (up to 27,500)10% (up to 110,000)Custom
Requests a minute51030120600Custom
API keys112510Custom
Latest and spot pricesIncludedIncludedIncludedIncludedIncludedIncluded
Karat and fineness pricesIncludedIncludedIncludedIncludedIncludedIncluded
Melt value and payoutIncludedIncludedIncludedIncludedIncludedIncluded
Metal ratiosIncludedIncludedIncludedIncludedIncludedIncluded
Usage endpoint (not counted)IncludedIncludedIncludedIncludedIncludedIncluded
Browser CORS supportIncludedIncludedIncludedIncludedIncludedIncluded
Invoice billingNot includedNot includedNot includedNot includedNot includedIncluded
Licensed benchmark pricesNot includedNot includedNot includedNot includedNot includedOn request
SupportDocumentationEmail supportEmail supportPriority email supportPriority support and usage exportBy agreement

Yearly prices are 10 months' price for 12. All prices in USD, plus sales tax where it applies.

Good to know

How quotas and billing work

  • Quotas reset on the 1st

    Monthly call quotas reset at 00:00 UTC on the 1st of each month, whichever day you signed up.

  • No surprise overage bills

    Paid plans include a 10% grace above the included calls (for example, up to 550 on Starter). After that, calls pause until the quota resets or you upgrade. The Free plan stops at 10 calls.

  • Only successful calls count

    Errors, usage checks, reference data and browser preflight requests are never counted toward your quota.

  • Per-minute limits are per account

    Every authenticated request counts toward the per-minute limit, and all keys on an account share it.

  • Cancel anytime

    Cancel from your dashboard. Your plan stays active until the end of the period you paid for, then moves to Free.

  • Prices in USD

    All plan prices are in US dollars and billed securely through Stripe. Sales tax is added at checkout where it applies, based on your billing address. Yearly billing is 10 months' price for 12.

Prices returned by the API are indicative and are not an appraisal, a quote or an offer to buy or sell. See the API terms and data disclaimer.

Pricing questions

Frequently asked questions

The Free plan works as an open-ended trial: 10 calls a month to every endpoint, with no card required. It is meant for testing. When you are ready for production, upgrade from your dashboard.
Yearly plans cost 10 months' price for 12 months of access, billed once a year. For example, Pro is $590 a year instead of $708 when paid monthly.
On paid plans you get a 10% grace above your included calls. After that, the API returns a quota_exceeded error until your quota resets at 00:00 UTC on the 1st, or until you upgrade. We never bill overage. The Free plan stops at its 10 included calls.
No. Only successful responses from price endpoints count. Errors such as an invalid parameter, a rate limit or a temporary outage are not counted, and neither are usage checks or reference data.
Yes. Upgrade, downgrade or cancel from the billing page in your dashboard. An upgrade raises your limits as soon as it is confirmed. If you cancel, your plan stays active until the end of the current billing period; partial periods are not refunded unless the law requires it.
Payments are processed securely by Stripe. You can update your payment method and manage your subscription from the billing page in your dashboard.
Your paid plan keeps working for 7 days while the payment is retried. If the payment still has not gone through after that, API calls return a payment_required error until you update your payment method.
Yes. Enterprise plans offer custom volume, invoice billing and licensed benchmark prices on request. Email contact@karatology.com to talk it through.
Not sure yet?

Test every endpoint on the Free plan

Make up to 10 calls a month at no cost, read the docs, and upgrade only when your integration is ready.

Start freeRead the docs