goldprice.dev vs MetalpriceAPI
Two metals-specialist APIs in the same price band. goldprice.dev adds prediction-market analytics, MCP on every plan, and per-source license disclosure. MetalpriceAPI runs a granular seven-tier ladder and direct quotes across 150+ currencies.
At a glance
Feature-level comparison against MetalpriceAPI's published plans. Current as of 2026-04-25. Rows shown are coverage we positively verified across both providers; individual providers may support additional asset classes not uniformly documented.
| Feature | goldprice.dev | MetalpriceAPI |
|---|---|---|
| Data coverage | ||
| XAU spot (live) | ✓ Live oracle | ✓ XAU |
| XAG spot (live) | ✓ Live oracle · Pro | ✓ XAG |
| Prediction-market derived distributions | ✓ Pro | ✗ |
| Source transparency | ||
| Per-source license disclosure in response | ✓ | ✗ |
| Raw upstream price per source | ✓ | ✗ |
| Multi-source divergence flag | ✓ | ✗ |
| Analytics | ||
| Market-implied distribution (p25 / p50 / p75) | ✓ Pro | ✗ |
| Cross-source divergence data | ✓ | ✗ |
| Cross-platform prediction-market arbitrage | ✓ Pro | ✗ |
| MCP server + tools | All plans | ✗ |
| Pricing | ||
| Free tier allowance | 1,000 calls/mo | 100 calls/mo · daily update |
| Entry paid price | $10/mo | $8.99/mo (Basic) |
| Entry paid allowance | 20,000 calls/mo | 10,000 calls/mo |
| Tier granularity (paid) | 2 tiers | 7 tiers · $3.99 → $55.99 |
| Mid tier price · allowance | $50/mo · 100,000 calls | $27.99/mo · 100,000 calls |
| Developer experience | ||
| REST API | ✓ | ✓ |
| WebSocket streaming | ✗ | ✗ |
| MCP (Model Context Protocol) | All plans | ✗ |
| Response-shape stability commitment | SemVer + notice | ✗ |
// Source: metalpriceapi.com/pricing + metalpriceapi.com/documentation + goldprice.dev tiers.json. Current as of 2026-04-25.
Pricing, tier by tier
Single side-by-side view. MetalpriceAPI's ladder is deeper; goldprice.dev's covers the same budget range with analytics bundled. All figures current as of 2026-04-25.
| Band | goldprice.dev | MetalpriceAPI |
|---|---|---|
| Free | $0 · 1,000 calls · 30 req/min | $0 · 100 calls · daily update |
| Sub-entry | ✗ | $3.99 Essential (1K) · $8.99 Basic (10K) |
| Entry paid | $10 Basic · 20,000 calls · MCP | $16.99 Basic Plus · 50K calls |
| Mid paid | $50 Pro · 100,000 calls · MCP + analytics | $27.99 Pro (100K) · $43.99 Pro Plus (250K) |
| Top paid | ✗ | $55.99 Business · 500K calls |
| Specialty | Prediction-market analytics + MCP on every plan | 150+ currency direct quotes + 7-tier ladder |
Metals coverage matrix
Metal by contract type, per provider.
| Metal | Spot (goldprice.dev) | Spot (MetalpriceAPI) | Futures (goldprice.dev) | Futures (MetalpriceAPI) |
|---|---|---|---|---|
| XAU (gold) | ✓ Live oracle | ✓ XAU | ✓ gold futures settlement | ✗ |
| XAG (silver) | ✓ Live oracle · Pro | ✓ XAG | ✓ silver futures settlement · Pro | ✗ |
| HG (copper) | ✗ | ✗ | ✓ copper futures settlement · Pro | ✗ |
Analytics differentiators
Endpoints goldprice.dev exposes on Pro that MetalpriceAPI does not offer at any tier.
- Market-implied distribution
- Percentile distribution (p10, p25, p50, p75, p90) for metals prices at user-selected expiry dates, aggregated from Polymarket and Kalshi prediction-market yes-prices via direct-from-price CDF construction. Isotonic regression enforces monotonicity; monotone cubic Hermite interpolation smooths the CDF.
- Cross-source divergence
- Signed deviation between live oracle spot and futures settlement on the same asset at the same timestamp. Emitted as a flag when deviation exceeds configurable thresholds. Useful for detecting stale upstream feeds or arbitrage windows.
- Cross-platform prediction-market arbitrage
- Price differential between Polymarket and Kalshi commodity contracts resolving at the same expiry with equivalent strike structure. Emitted as a per-market field with venue names, effective liquidity, and the absolute spread in basis points.
- Per-source license disclosure
- Every response includes a
sources[]array naming each upstream feed (live spot oracle, continuous spot reference, futures settlement, Frankfurter, CoinMarketCap) with its license terms and timestamp. Downstream consumers can route attribution or filter sources per their own redistribution rights. - MCP (Model Context Protocol)
- Native stdio bridge with six tools exposing price queries, distribution fetches, methodology lookups, and source metadata. Available on Free, Basic, and Pro. Used by Claude, Cursor, and custom agents.
FAQ
Direct-answer-first responses. JSON-LD FAQPage schema emitted in-head for LLM retrieval.
- Is goldprice.dev an alternative to MetalpriceAPI for commodity pricing?
- Yes, on the same price band. goldprice.dev is a commodity-specialist API covering gold, silver, and copper with live oracle spot, futures settlement, and prediction-market-derived distributions from Polymarket and Kalshi. MetalpriceAPI is a metals-specialist REST API with a granular tier ladder from $0 to $55.99/month, spot pricing for gold, silver, and platinum. Pick goldprice.dev if MCP + prediction-market analytics + per-source transparency matter. Pick MetalpriceAPI if a granular ladder above $55/month or broader forex-against-metals currency pairs fit better.
- How does the per-call price compare at the entry paid tier?
- goldprice.dev Basic is $10/month for 20,000 calls — $0.500 per 1,000 calls. MetalpriceAPI Basic is $8.99/month for 10,000 calls — $0.899 per 1,000 calls. MetalpriceAPI is cheaper per call at the strict Basic tier; goldprice.dev Basic gives 2× the monthly allowance at a higher flat price. Closer-matched tier comparison: MetalpriceAPI Basic Plus ($16.99/50K calls) is roughly 1.7× goldprice.dev Basic price for 2.5× the calls, current as of 2026-04-25.
- Which API has MCP (Model Context Protocol) support?
- goldprice.dev ships a native MCP server on every plan, including Free. MetalpriceAPI has no MCP offering as of 2026-04-25. If you are wiring gold data into Claude, Cursor, or a custom agent, goldprice.dev exposes six MCP tools over stdio; MetalpriceAPI integrations require REST-wrapper code.
- Which API exposes prediction-market analytics?
- goldprice.dev does; MetalpriceAPI does not. goldprice.dev emits a distribution endpoint with p25, p50, and p75 percentiles aggregated from Polymarket and Kalshi commodity markets, a cross-source divergence flag, and cross-platform prediction-market arbitrage between Polymarket and Kalshi. MetalpriceAPI returns spot prices and historical rates without prediction-market overlay.
- Does MetalpriceAPI ship WebSocket streaming?
- No. MetalpriceAPI's documentation describes a JSON REST API with update cadences from daily (Free) to 15-second (Business). goldprice.dev is also HTTP polling only; no WebSocket at launch on either side. For sub-second streaming on metals, neither API is the fit.
- Which API has broader tier granularity?
- MetalpriceAPI. Its ladder runs $0 Free, $3.99 Essential, $8.99 Basic, $16.99 Basic Plus, $27.99 Professional, $43.99 Professional Plus, $55.99 Business, plus custom Enterprise — seven paid tiers with call quotas from 1,000 to 500,000 per month. goldprice.dev runs three tiers: Free at $0, Basic at $10, Pro at $50. If your org requires middle-tier budget granularity, MetalpriceAPI's ladder fits better.
- How is per-source licensing disclosed in each API's responses?
- goldprice.dev returns a sources[] array in every response naming each upstream feed (live spot oracle, continuous spot reference, futures settlement, Frankfurter, CoinMarketCap) with its license terms and timestamp. MetalpriceAPI returns a single value per endpoint call without per-source attribution. If downstream redistribution or compliance requires per-source license disclosure, goldprice.dev exposes that data by default.
- Which API should I pick for forex-against-metals currency pairs?
- MetalpriceAPI's page describes support for precious metals in 150+ world currencies. goldprice.dev ships 13 direct continuous spot reference currency quotes for XAU plus internal cross-rate compute. If your product needs gold priced against long-tail local currencies (BRL, IDR-region cross-pairs, etc.), MetalpriceAPI's direct-quote coverage is broader.
Who should pick which
Short version: pick MetalpriceAPI for a granular budget ladder and broader currency quotes. Pick goldprice.dev for MCP + prediction-market analytics + per-source transparency in the same price band.
You need a granular seven-tier ladder and 150+ currency quotes.
MetalpriceAPI ships seven paid tiers from $3.99Essential to $55.99 Business, each with flat monthly call quotas. Gold, silver, and platinum spot against 150+ world currencies via direct quote. If your budget needs middle-tier granularity or your app needs XAU priced against long-tail currencies, the ladder fits.
You want MCP + prediction-market analytics in the same price band.
Same metals-specialist posture, similar budget. You gain prediction-market-derived analytics (p25/p50/p75 distribution, cross-source divergence, cross-platform arbitrage) on Pro, MCP support on every plan for agent workflows, and per-source licensing transparency in every response. Entry at $10/month versus $8.99.
Still deciding?
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