# StackerScan

> StackerScan tracks and analyzes a physical precious-metals stack: live spot
> prices, historical charts, observed dealer premiums, receipt and coin-photo
> scanning, and portfolio reporting.

## Machine-readable data

- [Metal spot prices](https://www.stackerscan.com/metal-prices.md): current and 30-day gold, silver, platinum, palladium, copper and nickel prices. Supports `?currency=` and `?unit=troy_oz|gram`.
- [Observed metal premiums](https://www.stackerscan.com/api/metal-premiums.md?metal=silver): 30-day rolling median asking premiums over spot. Set `?metal=silver` or `?metal=gold`.
- [Supported currencies](https://www.stackerscan.com/api/currencies.md): the codes `?currency=` accepts.
- [How to use StackerScan](https://www.stackerscan.com/api/how-to-use.md): step-by-step product guide.

## Pages with a markdown representation

- [Bullion premium calculator](https://www.stackerscan.com/premiums.md)
- [Blog](https://www.stackerscan.com/blog.md)
- [API & agent documentation](https://www.stackerscan.com/docs.md): when to use StackerScan, what the API does, how to call it, and how failures are shaped.

## Discovery

- [llms.txt](https://www.stackerscan.com/llms.txt)
- [OpenAPI specification](https://www.stackerscan.com/openapi.json)
- [Sitemap](https://www.stackerscan.com/sitemap.xml)

Every page listed above also answers `Accept: text/markdown` on its own URL, and
accepts `?mode=agent` as an alias for the same body.