Alpaca vs Goldprice.dev

Alpaca's Market Data API v2 delivers realtime and historical quotes, trades, and bars for US equities and ETFs over REST and WebSocket, requiring an Alpaca brokerage/API-key account. The free plan gives 200 API calls/minute with 15-minute-delayed IEX-exchange data and 30-symbol WebSocket streams; the $99/month Algo Trader Plus tier removes the call cap, adds true realtime data from all US exchanges (plus real-time OPRA options quotes), and unlimited streamed symbols. Both tiers include 7+ years of historical data.

Goldprice.dev is a commodity-pricing API returning live XAU/XAG/copper spot prices across 31 currencies (cross-checked via exchangerate.dev with an ECB fallback), COMEX gold futures and GLD ETF data, and over a decade of daily XAU/USD history, with every price citing its source and published methodology. Access is anonymous and keyless by default at a modest rate limit; a free API key raises throughput, and paid tiers add per-country physical dealer pricing, a volatility/probability surface, a real-time SSE/WebSocket feed, and an MCP server on every plan. A live Origin-header probe against the real API host (api.goldprice.dev) found no Access-Control-Allow-Origin header, so CORS resolves to `no` — the stored `unknown` was unresolved, not confirmed open.