Comparison
Metal Sentinel vs. Metals-API
Metals-API lists paid plans only, starting at $39.99 a month for 5,000 calls with 10-minute updates, according to its pricing page. Metal Sentinel has a free plan with 7,500 requests a month, quotes refreshed every 15 seconds and paid plans from $7.99 a month.
metals-api.com ยท Last reviewed November 2026
Side-by-side
| Feature | Metal Sentinel | Metals-API |
|---|---|---|
| Spot data source | Primary market feed | LBMA fixings, COMEX futures and other feeds |
| Metals covered | Gold, silver, platinum, palladium, rhodium, copper, nickel, aluminum, lead, zinc | 539 metal symbols |
| Currencies | 1,000+ fiat and crypto | 185 currencies |
| Lowest paid plan | $7.99/month for 45,000 requests | $39.99/month for 5,000 calls |
| Update interval | Every 15 seconds on all plans | 10 minutes on Bronze, 60 seconds on Silver |
| Streaming | No, REST only | WebSocket from the $219.99/month Platinum plan |
| Embeddable widgets | Yes, included for free | Not listed |
| Free tier | Yes, 7,500 requests/month on RapidAPI | None listed on its pricing page |
Where Metal Sentinel wins
- A free plan with 7,500 requests a month and no credit card
- Paid plans from $7.99 a month, against $39.99 for the Metals-API Bronze plan
- Quotes refreshed every 15 seconds on every plan, including the free one
- Embeddable price widgets included at no extra cost
When Metals-API might still be the right call
Metals-API lists 539 metal symbols, including LBMA fixings and COMEX futures, and offers WebSocket streaming from its Platinum plan. If you need those series or a streaming feed, it covers ground Metal Sentinel does not. Metal Sentinel fits projects that need ten metals in many currencies, a free plan to start and a lower price at moderate volume. Metals-API figures come from metals-api.com.
Try it in your stack in 5 minutes
Subscribe on RapidAPI, copy your key, and pull live spot quotes for any of our ten metals in any currency.