Protocol + sUSDe staking yields (current, 30d, 90d, inception)
API · /ethena-api
Ethena USDe Synthetic Dollar API
healthy
3,811 Subscribers
Live data for Ethena's USDe, the largest synthetic dollar in crypto, read keyless from Ethena's public yield feed and directly from the Ethereum blockchain. USDe is not backed by fiat in a bank like USDC — it is a delta-neutral synthetic dollar: Ethena holds staked ETH/BTC and shorts the matching perpetual futures, so the position is hedged to roughly one dollar while the funding and staking it earns become the yield. Stake USDe into sUSDe and you receive that yield; sUSDe is the yield-bearing version and its value in USDe grows every day. The yield endpoint returns Ethena's yields — the current protocol yield and sUSDe staking yield plus the 30-day, 90-day and since-inception average sUSDe APY — the carry the synthetic dollar throws off, which rises and falls with the perpetual-futures funding market. The supply endpoint reads the Ethereum contracts directly: the circulating USDe supply, the amount of USDe staked in sUSDe, the sUSDe share count, the sUSDe-to-USDe exchange rate (how much USDe one sUSDe is now worth — above 1.0 because yield has accrued) and the staking ratio (what share of USDe is staked and earning). The overview endpoint is the at-a-glance snapshot combining the supply and the live yield. This is the Ethena / USDe synthetic-dollar cut — distinct from the generic multi-stablecoin supply feeds, the DeFi lending-rate and yield-aggregator feeds, and the generic ERC-20 token-info feed: the single-protocol view of how the synthetic dollar is sized, staked and yielding. Yields are annualised percentages; supplies are in USDe; the exchange rate is USDe per sUSDe. No key, nothing stored beyond a short cache.
api.oanor.com/ethena-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 202 ms
- Server probes · 24h
- Subscribers
- 3,811
- active
- Total calls
- 80
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 950 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 950 calls/month
- 2 req/sec
- All endpoints
- No credit card
Starter
€20.00 /month
- 25,000 calls / month
- 6 requests / second
- Hard cap (429 above quota, no overage)
- 25k calls/month
- 6 req/sec
- Yield + supply
- Email support
Pro
€72.00 /month
- 138,000 calls / month
- 16 requests / second
- Hard cap (429 above quota, no overage)
- 138k calls/month
- 16 req/sec
- Overview snapshot
- Priority support
Scale
€201.00 /month
- 560,000 calls / month
- 40 requests / second
- Hard cap (429 above quota, no overage)
- 560k calls/month
- 40 req/sec
- Full USDe feed
- Dedicated SLA
Built by
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api.oanor.com/plasma-api
Stablecoin Supply API
Live circulating supply, chain distribution and supply history for any stablecoin, keyless. For one stablecoin (USDT, USDC, DAI, USDe) get its total circulating supply, peg type and mechanism, price, 1d/7d/30d supply change and market dominance; the per-chain breakdown of where that supply actually lives; and the circulating-supply history over time, for the whole asset or a single chain. Search 370+ stablecoins to find an id. Live, nothing stored. The single-stablecoin supply layer for treasury, risk, research and dashboard apps — distinct from whole-ecosystem stablecoin feeds, this is one stablecoin in depth.
api.oanor.com/stablecoinsupply-api
Spark Protocol API
Live protocol metrics for Spark (the Sky / former MakerDAO ecosystem capital-allocation protocol), keyless. Both Spark products: SparkLend, the lending money-market with per-asset supply APY and TVL, and Spark Savings, the sUSDS / USDS / USDC / USDT savings products passing through the Sky Savings Rate — a savings-yield dimension other lending APIs do not have. Plus total value locked and per-chain TVL. One combined overview endpoint snapshots it all. Live, nothing stored. The Spark-metrics layer for DeFi dashboards, lending, savings, stablecoin and yield apps — distinct from pure lending protocols, this is Spark lending-plus-savings model specifically.
api.oanor.com/spark-api
Liquity Protocol API
Live protocol metrics for Liquity, the original immutable decentralized borrowing protocol that issues the LUSD and BOLD stablecoins against ETH and liquid-staking-token collateral, keyless. Get the total collateral locked, the breakdown of which assets back the stablecoins (ETH, wstETH, rETH across Liquity v1 + v2), per-chain TVL, and the Liquity pools (stability pools / earning positions) with their APY. One combined overview endpoint snapshots it all. Live, nothing stored. The CDP / decentralized-stablecoin metrics layer for DeFi dashboards, stablecoin, risk and yield apps — distinct from DEX, lending, restaking and yield protocols, this is Liquity collateralized-debt model specifically.
api.oanor.com/liquity-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Ethena USDe Synthetic Dollar API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Ethena USDe Synthetic Dollar API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Ethena USDe Synthetic Dollar API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does Ethena USDe Synthetic Dollar API cost?
Ethena USDe Synthetic Dollar API has a free tier with 100 calls / month. Paid plans start at €20.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is Ethena USDe Synthetic Dollar API GDPR-compliant?
All requests to Ethena USDe Synthetic Dollar API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.
Pick an endpoint from the list on the left to see its details and try it.
Code snippets
Sign up to get an API key, then call any path under your slug.
curl https://api.oanor.com/ethena-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/ethena-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/ethena-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);import requests
r = requests.get(
"https://api.oanor.com/ethena-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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