goldprice.dev vs Polygon.io / Massive.com

Pricing, tier by tier

Single side-by-side view. All figures current as of 2026-04-24.

Metals coverage matrix

Metal by contract type, per provider.

Analytics differentiators

Coverage and source details in the new goldprice.dev plans.

Forward view

Futures settlement curves are excluded from every new plan.

Cross-source divergence

Spot/futures comparisons are excluded from every new plan.

Per-country physical dealer prices

Live dealer sell and buyback quotes with premium-over-spot across selected countries, on Basic and above: the real price of gold at the counter, not a forex-pair quote.

Per-source identifiers and timestamps

Add ?include=sources to any price response for a sources[] array naming one live spot source per spot row, USD spot × live exchangerate.dev FX for non-USD gold, with source identifiers and timestamps. Downstream consumers can route attribution or filter sources per their own redistribution rights.

MCP (Model Context Protocol)

Native stdio bridge with nine tools for price queries, history, methodology and source metadata. Available on every plan. Used by Claude, Cursor, and custom agents.

FAQ

Is goldprice.dev an alternative to Polygon.io / Massive.com for commodity data?

Yes, for gold, silver, and copper. goldprice.dev covers gold, silver and copper spot on every plan, dealer prices from Basic, and full daily history from Plus. Polygon.io / Massive.com is a generalist market-data API covering stocks, options, forex, crypto, indices, and futures, gold and silver are served as the XAU/USD and XAG/USD forex pairs. Pick Massive if gold is one of many assets in a multi-asset product. Pick goldprice.dev if metals are your primary use case and you need dealer prices plus source identifiers and timestamps.

Did Polygon.io rebrand to Massive.com?

Yes, on 2025-10-30. Both polygon.io and massive.com resolve to the same API, SDKs, and API keys. We route this comparison under /comparison/polygon-io because the long-tail query volume still sits on the old name. Content references Massive throughout so the page remains accurate after Google query volume flips.

How much does each API cost at the entry paid tier?

goldprice.dev Basic is $19/month; Massive entry is $49/month. goldprice.dev also ships a $0 Free tier (5,000 calls/month) and a $89 Pro tier (1,000,000 calls/month). Massive lists a single $49 entry tier with unlimited streaming and API requests, current as of 2026-04-24. For gold-only use cases at low volume, goldprice.dev is cheaper. For unlimited-volume multi-asset use cases, Massive's single-tier model is simpler.

Does Polygon.io / Massive.com cover futures-settlement gold futures settlement?

Yes, Massive covers futures including GC (gold), SI (silver), and HG (copper) on its futures plan. No new goldprice.dev plan includes futures or settlements. Our spot responses include source identifiers and timestamps. Massive returns settlement prices without per-source attribution or forward-view overlay.

Which API has MCP (Model Context Protocol) support?

goldprice.dev ships a native MCP server on every plan, including Free. Polygon.io / Massive.com has no MCP offering as of 2026-04-24. If you are wiring gold data into Claude, Cursor, or a custom agent, goldprice.dev exposes nine MCP tools over stdio instead of requiring REST-wrapper code.

Which API exposes a forward view and cross-source divergence for gold?

No new goldprice.dev plan includes futures, settlements or their forward curves. Massive does not offer a forward view or cross-source divergence; gold is quoted as a single XAU/USD forex price.

Which API should I pick for multi-asset coverage beyond metals?

Polygon.io / Massive.com. If gold is one asset of many, alongside stocks, options, forex, crypto, indices, and non-metal futures, Massive's generalist coverage in one API fits. goldprice.dev only covers gold, silver, and copper. Outside metals, goldprice.dev is not the right API.

How is source provenance disclosed in each API's responses?

goldprice.dev returns sources[] (via ?include=sources) with source identifiers and timestamps: one 'Live spot' source per spot row, USD spot × live exchangerate.dev FX for non-USD gold. Polygon.io / Massive.com licenses its feed uniformly under Massive's commercial terms and does not attach per-source license disclosure to individual responses. If downstream redistribution or compliance requires per-source attribution, goldprice.dev exposes it with ?include=sources.

Does Polygon.io / Massive.com offer per-country dealer prices?

No. Massive prices gold and silver as the XAU/USD and XAG/USD forex pairs, with no dealer-level data. goldprice.dev Basic ($19+) covers live dealer sell and buyback quotes with premium-over-spot across selected countries. Massive has no per-country dealer feed.

Reference prices for informational purposes only. Not investment advice.

Who should pick which

Short version: pick Massive for multi-asset coverage at a single price point. Pick goldprice.dev for gold-native depth: per-country dealer prices and per-source transparency.