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API · /hela-api

HeLa Chain API

healthy 4,389 Subscribers

Live on-chain data for HeLa mainnet (the HeLa Labs EVM Layer-1 with native stablecoin gas, native HLUSD) via Blockscout — no key. Read network stats (block height, total transactions, gas), a gas oracle in gwei, the most recent blocks and full block detail by height or hash, any address balance and contract info, full transaction detail, ERC-20 token detail by contract, and a universal search across addresses, tokens, blocks and transactions. Real Layer-1 chain data with the rotating proxy as automatic fallback — 9 endpoints. Ideal for wallets, explorers, payments and DeFi tooling, portfolio trackers and on-chain monitoring on HeLa.

#hela #hela-labs #blockchain #web3 #on-chain #layer1 #hlusd #evm #crypto #blockscout
api.oanor.com/hela-api
Get an API key Try in playground → Contact provider

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

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
355 ms
Server probes · 24h
Subscribers
4,389
active
Total calls
0
last 7 days
status Full status page → · 9 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 4,250 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 4,250 calls/month
  • 2 req/sec
  • All 9 on-chain endpoints
  • No credit card
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Basic

€7.40 /month

  • 104,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 104k calls/month
  • 8 req/sec
  • Stats, gas, blocks, tx, tokens
  • Email support
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Pro

€24.90 /month

  • 575,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 575k calls/month
  • 20 req/sec
  • Payments & analytics scale
  • Priority support
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Mega

€69.80 /month

  • 2,820,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 2.82M calls/month
  • 50 req/sec
  • Platform scale
  • Dedicated SLA
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Live on-chain data for the RSS3 Value Sublayer (VSL) mainnet (the EVM chain of the RSS3 Open Information Layer, native RSS3) via Blockscout — no key. Read network stats (block height, total transactions, gas), a gas oracle in gwei, the most recent blocks and full block detail by height or hash, any address balance and contract info, full transaction detail, ERC-20 token detail by contract, and a universal search across addresses, tokens, blocks and transactions. Real chain data with the rotating proxy as automatic fallback — 9 endpoints. Ideal for wallets, explorers, data/social-graph tooling, portfolio trackers and on-chain monitoring on RSS3.

api.oanor.com/rss3-api

Bittensor EVM Chain API

Live on-chain data for the Bittensor EVM mainnet (the EVM environment of the Bittensor / TAO decentralized-AI network, native TAO) via Blockscout — no key. Read network stats (block height, total transactions, gas), a gas oracle in gwei, the most recent blocks and full block detail by height or hash, any address balance and contract info, full transaction detail, ERC-20 token detail by contract, and a universal search across addresses, tokens, blocks and transactions. Real chain data with the rotating proxy as automatic fallback — 9 endpoints. Ideal for wallets, explorers, AI-subnet and DeFi tooling, portfolio trackers and on-chain monitoring on Bittensor EVM.

api.oanor.com/bittensor-api

Japan Open Chain API

Live on-chain data for Japan Open Chain mainnet (a consortium EVM Layer-1 run by Japanese enterprises, native JOC) via Blockscout — no key. Read network stats (block height, total transactions, gas), a gas oracle in gwei, the most recent blocks and full block detail by height or hash, any address balance and contract info, full transaction detail, ERC-20 token detail by contract, and a universal search across addresses, tokens, blocks and transactions. Real Layer-1 chain data with the rotating proxy as automatic fallback — 9 endpoints. Ideal for wallets, explorers, enterprise and stablecoin tooling, portfolio trackers and on-chain monitoring on Japan Open Chain.

api.oanor.com/japanopenchain-api

MCH Verse Chain API

Live on-chain data for MCH Verse mainnet (the My Crypto Heroes gaming Verse-Layer L2 on Oasys, native OAS) via Blockscout — no key. Read network stats (block height, total transactions, gas), a gas oracle in gwei, the most recent blocks and full block detail by height or hash, any address balance and contract info, full transaction detail, ERC-20/game-token detail by contract, and a universal search across addresses, tokens, blocks and transactions. Real Layer-2 chain data with the rotating proxy as automatic fallback — 9 endpoints. Ideal for wallets, explorers, game and NFT tooling, portfolio trackers and on-chain monitoring on MCH Verse.

api.oanor.com/mchverse-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for HeLa Chain API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call HeLa Chain API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for HeLa Chain 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 HeLa Chain API cost?
HeLa Chain API has a free tier with 100 calls / month. Paid plans start at €7.40 / 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 HeLa Chain API GDPR-compliant?
All requests to HeLa Chain 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/hela-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/hela-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/hela-api/SOME_PATH");
curl_setopt($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/hela-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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