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API · /treasuryauctions-api

US Treasury Auctions API

healthy 4,313 Subscribers

Live results and schedule of US Treasury debt auctions, served from the US Treasury's FiscalData API — no key, nothing cached. Every Treasury bill, note, bond, TIPS and FRN is sold at auction, and the results are the market's clearest read on demand for US government debt. The auctions endpoint returns the most recent auctions — bills, notes, bonds and more — each with its CUSIP, security type and term, auction and issue dates and offering amount. The results endpoint returns the recently completed auctions with the numbers that matter: the high yield or discount rate, the bid-to-cover ratio (how many dollars were bid for each dollar offered — the headline demand gauge, around 2.5 for a healthy 20-year bond), the interest rate and the price. The security endpoint returns the full detail of one auctioned security by its CUSIP. Everything is the Treasury's own published auction data, live, nothing stored. This is the Treasury-auction layer for any fixed-income, rates, macro or research app. Distinct from debt-level and yield-curve APIs — this is the auction calendar and results: what the Treasury sold, at what yield, and how strong the demand was. 3 endpoints, no key on our side.

#treasury #auctions #fixed-income #bonds #bills #yield #bid-to-cover #finance
api.oanor.com/treasuryauctions-api
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Machine-readable spec so AI agents can integrate this API.

/api/treasuryauctions-api/openapi.json
/api/treasuryauctions-api/llms.txt

Discovery: GET /api/index.json lists every API.

US Treasury Auctions API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
447 ms
Server probes · 24h
Subscribers
4,313
active
Total calls
80
last 7 days
status Full status page → · 16 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,600 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,600 calls/month
  • 2 req/sec
  • Auctions, results, security
  • No credit card
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Starter

€11.00 /month

  • 42,000 calls / month
  • 6 requests / second
  • Hard cap (429 above quota, no overage)
  • 42,000 calls/month
  • 6 req/sec
  • Bid-to-cover + high yield by type
  • Email support
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Pro

€26.00 /month

  • 225,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 225,000 calls/month
  • 15 req/sec
  • Fixed-income & rates pipelines
  • Priority support
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Mega

€61.00 /month

  • 1,150,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,150,000 calls/month
  • 40 req/sec
  • Desk & platform scale
  • Dedicated SLA
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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for US Treasury Auctions API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call US Treasury Auctions API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for US Treasury Auctions 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 Auctions API cost?
US Treasury Auctions API has a free tier with 100 calls / month. Paid plans start at €11.00 / 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 Auctions API GDPR-compliant?
All requests to US Treasury Auctions 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/treasuryauctions-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/treasuryauctions-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/treasuryauctions-api/SOME_PATH");
curl_setopt($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/treasuryauctions-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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