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API · /yearn-api

Yearn Finance Vaults API

degraded 3,634 Subscribers

Live DeFi yield-vault data from Yearn Finance — the long-running yield aggregator — served from its public yDaemon API as clean JSON, no cache. Yearn vaults auto-compound strategies to earn yield on a deposited token, each reporting its TVL, net APR (after fees) and underlying strategies. List the active vaults on a chain with TVL, net APR, category and underlying token (sorted by TVL); fetch one vault's full detail by address including its strategies; rank the highest-yielding vaults by net APR with a TVL floor to exclude dust; or list the chains Yearn runs on. Read live from Yearn, nothing cached — vaults with broken legacy price oracles or shut-down/hidden status are filtered out. This is Yearn's own vault, APR and strategy layer — distinct from on-chain explorers, DEX-pool feeds and price APIs: protocol-level yield data for the original DeFi yield aggregator.

#crypto #defi #yearn #yield #vaults #apr #aggregator
api.oanor.com/yearn-api
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Machine-readable spec so AI agents can integrate this API.

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

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

Yearn Finance Vaults API — live data on the oanor API marketplace

API health

degraded
Uptime
93.33%
Server probes · 24h
Avg latency
613 ms
Server probes · 24h
Subscribers
3,634
active
Total calls
95
last 7 days
status Full status page → · 15 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 950 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 950 calls/month
  • 3 req/sec
  • All endpoints
  • No credit card
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Starter

€10.90 /month

  • 34,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 34k calls/month
  • 12 req/sec
  • Vault list + TVL
  • Email support
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Pro

€29.80 /month

  • 178,000 calls / month
  • 28 requests / second
  • Hard cap (429 above quota, no overage)
  • 178k calls/month
  • 28 req/sec
  • APR ranking + strategies
  • Priority support
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Business

€71.00 /month

  • 890,000 calls / month
  • 55 requests / second
  • Hard cap (429 above quota, no overage)
  • 890k calls/month
  • 55 req/sec
  • Yield-desk volume
  • Dedicated SLA
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Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Yearn Finance Vaults API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Yearn Finance Vaults API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Yearn Finance Vaults 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 Yearn Finance Vaults API cost?
Yearn Finance Vaults API has a free tier with 100 calls / month. Paid plans start at €10.90 / 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 Yearn Finance Vaults API GDPR-compliant?
All requests to Yearn Finance Vaults 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/yearn-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/yearn-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/yearn-api/SOME_PATH");
curl_setopt($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/yearn-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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