Whole yield curve with spreads, shape and inversion
API · /yieldcurve-api
US Treasury Yield Curve API
healthy
4,915 Subscribers
Live US Treasury yield curve as an API — US government bond yields across the curve, served from Yahoo Finance. It returns the current yield (in percent) for the 3-month, 2-year, 5-year, 10-year and 30-year Treasuries with their daily change in basis points, the shape of the curve (steep, normal, flat or inverted), and the key spreads traders and economists watch — the 10y-2y and 10y-3m spreads, whose inversion has preceded every modern US recession — plus an inverted flag. Get the whole curve, a single maturity's yield, or the spread between any two maturities. The interest-rate and recession-signal layer for trading, macro-research and dashboard apps. Live, no key, no cache. Distinct from US Treasury fiscal-data APIs (which track national debt and issuance) — this is the live market yield curve.
api.oanor.com/yieldcurve-api
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 159 ms
- Server probes · 24h
- Subscribers
- 4,915
- active
- Total calls
- 80
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 9,000 calls / month
- 4 requests / second
- Hard cap (429 above quota, no overage)
- 9k calls/month
- 4 req/sec
- All endpoints
- No credit card
Starter
€10.00 /month
- 130,000 calls / month
- 12 requests / second
- Hard cap (429 above quota, no overage)
- 130k calls/month
- 12 req/sec
- Email support
Pro
€26.00 /month
- 650,000 calls / month
- 35 requests / second
- Hard cap (429 above quota, no overage)
- 650k calls/month
- 35 req/sec
- Priority support
Desk
€63.00 /month
- 3,300,000 calls / month
- 100 requests / second
- Hard cap (429 above quota, no overage)
- 3.3M calls/month
- 100 req/sec
- Dedicated SLA
Built by
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api.oanor.com/ecb-api
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api.oanor.com/politeia-api
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api.oanor.com/cardanochain-api
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Live treasury composition for DeFi protocols and DAOs, keyless. For any protocol it returns the value its DAO holds in its treasury, split into the protocol OWN governance token versus real diversified reserves (stablecoins, ETH, BTC and other assets) — the single most-watched measure of treasury health and runway — broken down per chain, plus the treasury value over time. Live, nothing stored. The DAO-treasury layer for DeFi research, governance, risk and dashboard apps — this is treasury composition (own-token vs real reserves), not protocol TVL.
api.oanor.com/daotreasury-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for US Treasury Yield Curve API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call US Treasury Yield Curve API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for US Treasury Yield Curve 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 US Treasury Yield Curve API cost?
US Treasury Yield Curve API has a free tier with 100 calls / month. Paid plans start at €10.00 / 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 US Treasury Yield Curve API GDPR-compliant?
All requests to US Treasury Yield Curve 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/yieldcurve-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."const res = await fetch("https://api.oanor.com/yieldcurve-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();$ch = curl_init("https://api.oanor.com/yieldcurve-api/SOME_PATH");
curl_setopt($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/yieldcurve-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())Ratings
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