Gold historical charting

Skill nusantara-ventures/goldprice-skills/gold-historical-charting

Pull historical gold (or silver/copper) OHLC bars from goldprice.dev and build a price chart or backtest — knowing the per-tier history window (Free 30 days, Physical 1 year, Pro full back to 1996). Use this whenever the user builds a gold (or silver/copper) price chart, a historical time series, an OHLC view, or a backtest — even if they don't mention goldprice.dev or how far back the data goes. Reach for it before hand-rolling a history fetch or assuming the available date range; the per-tier window is the thing people get wrong.From its SKILL.md

Install

npx -y skills add nusantara-ventures/goldprice-skills --skill gold-historical-charting

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

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SKILL.md

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goldprice.dev — historical + charting

Daily OHLC history for one symbol. A 30-day chart works on the Free tier (free key, no card).

Pull the series

curl -H "Authorization: Bearer ga_live_..." \
  "https://api.goldprice.dev/v1/prices/history?symbol=XAU-USD-SPOT&from=2026-01-01&to=2026-04-21&interval=1d"

Response — bars live under series[], newest-first, values are strings, volume may be null:

{"symbol":"XAU-USD-SPOT","interval":"1d","from":"2026-06-25","to":"2026-07-01",
 "series":[
   {"date":"2026-07-01","open":"4005.934","high":"4114.62","low":"3960.411","close":"4035.198","volume":null,"is_stale":false,"is_closed":true},
   {"date":"2026-06-30","open":"4014.52","high":"4063.211","low":"3945.943","close":"4005.952","volume":null,"is_stale":false,"is_closed":true}
 ],
 "meta":{"tier":"free","count":6}}

MCP equivalent: get_historical(symbol, from_date, to_date, limit).

History depth is capped by tier — design for it

Tier	Window	Notes
Free	last 30 days	enough to prove a chart
Physical ($10)	last 1 year (rolling)
Pro ($30)	full	XAU daily to 1996 (30 years); intraday bars from 2006

Request a from older than your tier allows and the API returns a plan_gated error (not a truncated series) — clamp from to the tier window, or catch the error and prompt an upgrade:

{"error":"plan_gated","tier":"free","message":"tier 'free' can request history from 2026-06-07 onward; Pro unlocks full history back to 1996-01-01.","upgrade_url":"https://goldprice.dev/pricing"}

Building the chart

There is no server-side CSV/download endpoint. Read series[], reverse it if your chart wants oldest-first (it arrives newest-first), cast the string OHLC values to numbers, then hand it to your chart library (Recharts, Chart.js, lightweight-charts, etc.). Derive CSV client-side if you need an export.

When to upgrade

Deeper than 30 days → Physical (1yr) or Pro (30yr). Silver/copper history (XAG-USD-SPOT, HG-USD-FUTURES) → Pro. Backtesting across decades → Pro's full 1996+ daily.

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.