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GET /v1/chains

Chains ranked by total native stablecoin liquidity

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/stablecoinchains-api

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Code snippets

curl "https://api.oanor.com/stablecoinchains-api/v1/chains" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/stablecoinchains-api/v1/chains", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/stablecoinchains-api/v1/chains");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/stablecoinchains-api/v1/chains",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Every tracked chain ranked by its total native stablecoin liquidity (USDC + USDT) — which chain hosts the most dollars. Ethereum mainnet still leads, but the rollups (Base, Arbitrum, Optimism) have been taking share. usdc and usdt are each chain's native supply in dollars. Live, cached ~5m.",
        "count": 6,
        "chains": [
            {
                "usdc": 51392209705,
                "usdt": 97070655230,
                "chain": "Ethereum",
                "layer": "L1",
                "total": 148462864935,
                "share_pct": 92.07
            },
            {
                "usdc": 4260717363,
                "usdt": 26171294,
                "chain": "Base",
                "layer": "rollup",
                "total": 4286888657,
                "share_pct": 2.66
            },
            {
                "usdc": 3280562875,
                "usdt": 999875327,
                "chain": "Arbitrum",
                "layer": "rollup",
                "total": 4280438202,
                "share_pct": 2.65
            },
            {
                "usdc": 396576506,
                "usdt": 1847205574,
                "chain": "Avalanche",
                "layer": "altL1",
                "total": 2243782080,
                "share_pct": 1.39
            },
            {
                "usdc": 754240445,
                "usdt": 879267241,
                "chain": "Polygon",
                "layer": "altL1",
                "total": 1633507686,
                "share_pct": 1.01
            },
            {
                "usdc": 165402875,
                "usdt": 177446399,
                "chain": "Optimism",
                "layer": "rollup",
                "total": 342849274,
                "share_pct": 0.21
            }
        ],
        "leader": "Ethereum",
        "source": "public JSON-RPC per chain, keyless",
        "total_stablecoin_usd": 161250330834
    },
    "meta": {
        "timestamp": "2026-06-12T19:35:40.089Z",
        "request_id": "6efbe0f3-48e6-4702-a62a-ee4b40fe0300"
    },
    "status": "ok",
    "message": "Chains retrieved successfully",
    "success": true
}