Free crypto GEX levels for your own charts

curl "https://swiftedge.uk/api/v1/gex-levels?coin=btc"
curl "https://swiftedge.uk/api/v1/gex-levels?coin=eth&format=csv"
curl "https://swiftedge.uk/api/v1/gex-levels?coin=sol&format=tv"

{"coin":"BTC","time":"2026-10-25T12:00:00Z","spot":80550.1,"gamma_flip":79338.5,"call_wall":82000,"put_wall":78000,
 "zero_dte":{"gamma_flip":80556.7,"call_wall":81000,"put_wall":80000},"net_gex_usd_per_1pct":76740000,
 "top_strikes":[{"strike":80000,"net_gex_usd_per_1pct":-7331000}, ...],"track_record":{...},"source":"Swiftedge, https://swiftedge.uk/btc/gex"}

//@version=5
// Swiftedge GEX levels (crypto) - paste the line from swiftedge.uk/gex-api. Free with attribution: "Data: Swiftedge".
indicator("Swiftedge GEX levels (crypto)", shorttitle="SE GEX", overlay=true, max_lines_count=100, max_labels_count=100)

src = input.text_area("", "Levels line", tooltip="Open swiftedge.uk/api/v1/gex-levels?coin=btc&format=tv, copy the line and paste it here. The levels update every minute; paste again to refresh.")
showStrikes = input.bool(true, "Largest strikes")
showZero = input.bool(true, "0DTE levels")
colFlip = input.color(#ffd54f, "Gamma flip")
colCW = input.color(#ff5c8a, "Call wall")
colPW = input.color(#2ee6c8, "Put wall")
colPos = input.color(color.new(#4fc3f7, 35), "Positive strike")
colNeg = input.color(color.new(#ce93d8, 35), "Negative strike")
lineW = input.int(2, "Line width", minval=1, maxval=5)

var line[] lines = array.new_line()
var label[] labels = array.new_label()

drawLevel(float price, string txt, color c, int w, string st) =>
    l = line.new(bar_index - 1, price, bar_index, price, extend=extend.both, color=c, width=w, style=st)
    lb = label.new(bar_index + 3, price, txt + " " + str.tostring(price), style=label.style_label_left, color=color.new(c, 85), textcolor=c, size=size.small)
    [l, lb]

if barstate.islast
    for l in lines
        line.delete(l)
    for lb in labels
        label.delete(lb)
    array.clear(lines)
    array.clear(labels)
    for p in str.split(str.trim(src), "|")
        kv = str.split(p, "=")
        if array.size(kv) == 2
            k = array.get(kv, 0)
            v = array.get(kv, 1)
            if k == "S"
                if showStrikes
                    for s in str.split(v, ",")
                        sv = str.split(s, ":")
                        if array.size(sv) == 2
                            px = str.tonumber(array.get(sv, 0))
                            g = str.tonumber(array.get(sv, 1))
                            if not na(px) and not na(g)
                                [l1, lb1] = drawLevel(px, "GEX " + (g >= 0 ? "+" : "") + str.tostring(g / 1e6, "#.#") + "M", g >= 0 ? colPos : colNeg, 1, line.style_dotted)
                                array.push(lines, l1)
                                array.push(labels, lb1)
            else
                px = str.tonumber(v)
                isZero = str.endswith(k, "0")
                if not na(px) and (showZero or not isZero)
                    c = str.startswith(k, "FLIP") ? colFlip : str.startswith(k, "CW") ? colCW : colPW
                    nm = k == "FLIP" ? "Gamma flip" : k == "CW" ? "Call wall" : k == "PW" ? "Put wall" : k == "FLIP0" ? "0DTE flip" : k == "CW0" ? "0DTE call wall" : "0DTE put wall"
                    [l2, lb2] = drawLevel(px, nm, c, isZero ? 1 : lineW, isZero ? line.style_dashed : line.style_solid)
                    array.push(lines, l2)
                    array.push(labels, lb2)