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API · /swell-api

Swellchain API

healthy 4,316 Subscribers

Live Swellchain on-chain data via Blockscout. Swellchain is a restaking-powered 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.

#swellchain #swell #restaking #ethereum #l2 #blockchain #evm #web3
api.oanor.com/swell-api
Get an API key Try in playground → Contact provider

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

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
1327 ms
Server probes · 24h
Subscribers
4,316
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

€10.50 /month

  • 82,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 82k calls/month
  • 10 req/sec
  • Email support
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Pro

€36.00 /month

  • 540,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 540k calls/month
  • 20 req/sec
  • Priority support
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Mega

€118.00 /month

  • 2,400,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 2.4M calls/month
  • 50 req/sec
  • Dedicated SLA
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Built by

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Related APIs

Other APIs with overlapping tags.

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

Manta Pacific API

Live Manta Pacific on-chain data via Blockscout. Manta Pacific is a modular Ethereum L2 using Celestia for data availability; 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/manta-api

Lumia API

Live Lumia on-chain data via Blockscout. Lumia is a real-world-asset (RWA) focused Ethereum L2; gas and balances are in LUMIA. Network stats, gas prices, latest blocks, a block by height or hash, address detail with LUMIA 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/lumia-api

Hemi API

Live Hemi on-chain data via Blockscout. Hemi is a modular Layer 2 supernetwork powered by both Bitcoin and Ethereum; 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/hemi-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Swellchain API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Swellchain API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Swellchain 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 Swellchain API cost?
Swellchain API has a free tier with 100 calls / month. Paid plans start at €10.50 / 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 Swellchain API GDPR-compliant?
All requests to Swellchain 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/swell-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/swell-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/swell-api/SOME_PATH");
curl_setopt($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/swell-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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