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API · /perennial-api

Perennial API

healthy 3,840 Subscribers

Live Perennial on-chain data via Blockscout. Perennial is a DeFi derivatives Ethereum L2 built on Arbitrum Orbit; gas and balances are in ETH. Network stats, gas prices, latest blocks, a block by height or hash, address detail with ETH balance, a transaction by hash, ERC-20 token metadata and a universal search across addresses, tokens, blocks and transactions. Real data, no key.

#perennial #defi #derivatives #arbitrum-orbit #ethereum #l2 #blockchain #evm
api.oanor.com/perennial-api
Get an API key Try in playground → Contact provider

Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
342 ms
Server probes · 24h
Subscribers
3,840
active
Total calls
0
last 7 days
status Full status page → · 9 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 1,600 calls / month
  • 1 requests / second
  • Hard cap (429 above quota, no overage)
  • 1,600 calls/month
  • 1 req/sec
  • All endpoints
  • No credit card
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Basic

€14.50 /month

  • 73,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 73k calls/month
  • 10 req/sec
  • Email support
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Pro

€45.50 /month

  • 500,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 500k calls/month
  • 20 req/sec
  • Priority support
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Mega

€144.00 /month

  • 2,700,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 2.7M calls/month
  • 50 req/sec
  • Dedicated SLA
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Built by

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PremiumApi

Related APIs

Other APIs with overlapping tags.

HyperEVM API

Live HyperEVM on-chain data via Blockscout. HyperEVM is the EVM layer of Hyperliquid; gas and balances are in HYPE. Network stats, gas prices, latest blocks, a block by height or hash, address detail with HYPE balance, a transaction by hash, ERC-20 token metadata and a universal search across addresses, tokens, blocks and transactions. Real data, no key.

api.oanor.com/hyperevm-api

Orderly API

Live Orderly on-chain data via Blockscout. Orderly is an omnichain orderbook Ethereum L2 built on the OP Stack; gas and balances are in ETH. Network stats, gas prices, latest blocks, a block by height or hash, address detail with ETH balance, a transaction by hash, ERC-20 token metadata and a universal search across addresses, tokens, blocks and transactions. Real data, no key.

api.oanor.com/orderly-api

Katana API

Live Katana on-chain data via Blockscout. Katana is a DeFi-focused Ethereum L2; gas and balances are in ETH. Network stats, gas prices, latest blocks, a block by height or hash, address detail with ETH balance, a transaction by hash, ERC-20 token metadata and a universal search across addresses, tokens, blocks and transactions. Real data, no key.

api.oanor.com/katana-api

Unichain API

Live Unichain on-chain data via Blockscout. Unichain is Uniswap's Ethereum L2; gas and balances are in ETH. Network stats, gas prices, latest blocks, a block by height or hash, address detail with ETH balance, a transaction by hash, ERC-20 token metadata and a universal search across addresses, tokens, blocks and transactions. Real data, no key.

api.oanor.com/unichain-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Perennial API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Perennial API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Perennial 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 Perennial API cost?
Perennial API has a free tier with 100 calls / month. Paid plans start at €14.50 / 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 Perennial API GDPR-compliant?
All requests to Perennial 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/perennial-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/perennial-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/perennial-api/SOME_PATH");
curl_setopt($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/perennial-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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