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chain-kpis: add polkadot (DOT native, Asset Hub stables) #1191

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Merged
Flotapponnier merged 1 commit into from
Jul 16, 2026
Merged

chain-kpis: add polkadot (DOT native, Asset Hub stables) #1191

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9 changes: 8 additions & 1 deletion harnesses/chain-kpis/cmd/script/defillama.go
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Original file line number Diff line number Diff line change
Expand Up @@ -45,7 +45,14 @@ func fetchDefillamaChain(c Chain) {
anyOK := false

if tvl, err := defillamaTvl(c.DefiLlama); err == nil {
chainTvlUsd.WithLabelValues(c.Slug).Set(tvl)
// Skip zero: DefiLlama serves the whole historical series as
// zero for chains where the relay layer holds no DeFi (Polkadot
// today), so we would render a "$0" card that reads as broken
// rather than as "no data". Card hides when the gauge stays
// unpublished. Non-zero values, including small ones, publish.
if tvl > 0 {
chainTvlUsd.WithLabelValues(c.Slug).Set(tvl)
}
anyOK = true
} else {
chainKpisFetchErrors.WithLabelValues(c.Slug, "defillama", classifyError(err.Error())).Inc()
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8 changes: 8 additions & 0 deletions harnesses/chain-kpis/cmd/script/registry.go
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Expand Up @@ -83,4 +83,12 @@ var Registry = []Chain{
// stablecoin (~$1), the wrong asset for a native-token card.
{Slug: "fraxtal", DefiLlama: "Fraxtal", Mobula: "", NativeSymbol: "FRXETH"},
{Slug: "soneium", DefiLlama: "Soneium", Mobula: "", NativeSymbol: "ETH"},
// Polkadot relay chain. DefiLlama tracks the chain name but reports
// zero TVL and 500s on the DEX endpoint: relay chain has no DeFi and
// parachain DeFi (Acala, Moonbeam, Hydration) lives under those slugs.
// Stables endpoint returns real values via Asset Hub USDC/USDT
// issuance. DOT native price and mcap flow through Mobula. The zero
// TVL guard in defillama.go drops the empty TVL card so only real
// cards render.
{Slug: "polkadot", DefiLlama: "Polkadot", Mobula: "", NativeSymbol: "DOT"},
}
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