StackerScan gives ChatGPT live precious-metals market data through five read-only tools. Current and previous-session spot prices for gold, silver, platinum, palladium, copper and nickel, in any supported currency and per troy ounce or gram. Rolling fine-metal-weighted median asking premiums over spot, observed from real marketplace listings rather than quoted by a dealer. Daily historical series for charting — one metal, the Goldback, or one PCGS-numbered coin at one grade. The latest Goldback premium multiple over its gold content, and the exchange rate that follows from it. And the live list of currency codes every request accepts — ISO 4217 fiat plus BTC and the metal codes. No API key, account, or registration is required. StackerScan is not a dealer and sells no bullion; do not use it to buy or sell metal. Numismatic valuation is only available for coins with a PCGS number. Results are structured JSON mirroring the open HTTP API documented at https://www.stackerscan.com/openapi.json.

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StackerScan