API · /celo-api

Celo On-Chain API

healthy 4,987 Subscribers

Live Celo on-chain data as an API, built on the open Blockscout explorer. Celo (chain id 42220) is a mobile-first, carbon-negative Ethereum-compatible network; its native currency is CELO and it hosts native stablecoins such as cUSD and cEUR. Pull network stats (total blocks and transactions, CELO price, live gas), a gas oracle with slow, average and fast prices in gwei, the most recent blocks and full block detail by height or hash. Look up any address for its balance and contract status, any transaction by hash for its value, fee, status, sender and receiver, and any ERC-20 token by contract for its name, symbol, decimals, holders and USD rate. A universal search resolves addresses, tokens, blocks and transactions in one call. Real on-chain data, no key needed upstream. Ideal for Celo wallets, block explorers, gas trackers, DeFi and stablecoin dashboards and on-chain analytics.

#celo #stablecoin #ethereum #blockchain #erc20 #crypto #on-chain

api.oanor.com/celo-api

Get an API key Try in playground → Contact provider

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

/api/celo-api/openapi.json

/api/celo-api/llms.txt

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

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 914 ms; Server probes · 24h
Subscribers: 4,987; active
Total calls: 45; last 7 days

Full status page → · 18 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

9,000 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
9,000 calls/month
2 req/sec
Stats + gas + blocks
No credit card

Starter

€3.80 /month

118,000 calls / month
8 requests / second
Hard cap (429 above quota, no overage)
118k calls/month
8 req/sec
Address + tx + token lookup
Email support

Pro

€18.00 /month

610,000 calls / month
25 requests / second
Hard cap (429 above quota, no overage)
610k calls/month
25 req/sec
Celo wallets / dashboards
Priority support

Mega

€67.00 /month

3,000,000 calls / month
50 requests / second
Hard cap (429 above quota, no overage)
3M calls/month
50 req/sec
DeFi / stablecoin analytics
Dedicated SLA

Built by

PremiumApi

Related APIs

Other APIs with overlapping tags.

NFT Collections API

Live NFT collection market data — no key, nothing cached. For any collection it returns the numbers that matter: the floor price in both the chain's native currency and US dollars, the 24-hour floor change, the collection market cap, the 24-hour trading volume and its change, the number of unique owners and the total supply, plus the contract address, the chain and the project's links — Pudgy Penguins floors around 4.3 ETH with thousands of unique owners and a market cap in the tens of millions. The list endpoint pages through the collections that are tracked, and the search endpoint finds a collection by name. It spans every chain NFTs are indexed on — Ethereum, Solana, Polygon and more. This is the collection-floor-and-volume layer for any NFT marketplace, wallet, portfolio or analytics app. Live, served from the public CoinGecko feed, nothing stored. Distinct from token-price and single-chain APIs — this is NFT collection floor prices, market caps and volumes. 4 endpoints.

api.oanor.com/nft-api

Transaction Lookup API

Live blockchain transaction, receipt and block lookup, read straight from the chain's public JSON-RPC node — no key, nothing cached. Give it a transaction hash and the transaction endpoint returns the full picture: the sender and recipient, the value moved (in wei and human ETH), the gas limit and gas price, the nonce, the block it landed in, the input-data size, and — by also reading the receipt — whether it succeeded or failed, the gas actually used, the effective gas price, the fee paid in ETH, the number of event logs it emitted, any contract it created and how many confirmations it now has. The receipt endpoint returns just the execution result (status, gas used, logs, contract address). The block endpoint takes a block number or "latest" and returns its timestamp, transaction count, gas used and limit with utilisation, base fee and miner. It works across seven EVM chains — Ethereum, Polygon, BNB Smart Chain, Arbitrum, Optimism, Base and Avalanche — with friendly aliases (eth, matic, bnb, arb, op, avax). This is the explorer-grade transaction layer every wallet, payment processor, dapp and dashboard needs to confirm and inspect on-chain activity. Read live from the chain, nothing stored. Distinct from balance, token-metadata and name-resolution APIs — this is transaction, receipt and block data read directly from the blockchain. 4 endpoints across 7 chains.

api.oanor.com/txlookup-api

ENS Resolver API

Live Ethereum Name Service resolution — the phone book of web3, no key, nothing cached. It turns a human .eth name into the wallet address behind it and back again, and reads the on-chain profile records the owner has set. The resolve endpoint takes a name like vitalik.eth and returns the Ethereum address, the avatar, the primary-name flag, the resolver contract, the content hash (for decentralised websites) and every text record the owner published — Twitter, GitHub, Reddit, Discord, Telegram, email, website and description — plus any multi-chain wallet addresses: vitalik.eth resolves to 0xd8dA…96045 with Twitter @VitalikButerin and GitHub vbuterin. The reverse endpoint does the opposite — give it any Ethereum address and it returns that address's primary ENS name and the same profile, so a bare 0x… becomes a human identity. The records endpoint returns just the profile text records for a name. This is the name-resolution and on-chain-profile layer every wallet, dapp, block explorer, payment and web3 app needs: address to name and name to address, with the owner's verified social links. Live from the Ethereum Name Service, nothing stored. Distinct from raw-RPC and token-metadata APIs — this is ENS naming and profile data. 4 endpoints.

api.oanor.com/ens-api

ERC-20 Token Info API

Live ERC-20 token metadata, read straight off the blockchain. Give it any token contract address and it returns the token's name, symbol, decimals and total supply — both as the raw on-chain integer and as a human-formatted number — by calling the ERC-20 contract directly via the chain's public JSON-RPC node (eth_call), confirming first that the address is really a contract. The USD Coin contract resolves to "USD Coin", symbol USDC, 6 decimals; Wrapped BTC on Polygon to "(PoS) Wrapped BTC", symbol WBTC, 8 decimals. The balance endpoint reads any wallet's holding of any token — pass the token contract and an owner address and it returns the balance raw and formatted with the token's own decimals and symbol. It works across seven EVM chains — Ethereum, Polygon, BNB Smart Chain, Arbitrum, Optimism, Base and Avalanche — with friendly aliases (eth, matic, bnb, arb, op, avax). This is the token-metadata and token-balance layer every wallet, DEX, portfolio tracker, block explorer and DeFi dashboard needs: turn a bare 0x… contract into a named, decimalled token, and resolve any holder's balance, in one call. Read live from the chain, no key on the data source, nothing cached. Distinct from native-coin balance and market-price APIs — this is on-chain ERC-20 contract data read directly from the blockchain. 4 endpoints across 7 chains.

api.oanor.com/tokeninfo-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Celo On-Chain API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Celo On-Chain API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Celo On-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 Celo On-Chain API cost?

Celo On-Chain API has a free tier with 100 calls / month. Paid plans start at €3.80 / month with higher quotas and faster rate limits.

Custom headers

Language: Client:

Code snippets

curl https://api.oanor.com/celo-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/celo-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/celo-api/SOME_PATH");
curl_setopt($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/celo-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

Ratings

No reviews yet.

Discussion

Ask questions, share usage tips, get answers from the provider and other developers. Public — anyone can read.

New thread

📌 Pinned 🔒 Locked

· ·

🔒 This thread is locked — no new replies.

No threads yet — start the discussion.

Support

Private 1:1 support with the provider — billing questions, integration issues, account problems. Only you and the provider team can see these threads.

Open new ticket

Describe what you need help with. The provider team gets an email and replies on the ticket page.

No tickets yet for this API.

Subscription active — calls can start immediately.

Send your first request —

Subscription active — copy a snippet and fire off your first call.

Pick a key

Plaintext is shown once at creation — use the prefix as a reminder.

Celo On-Chain API

API health

Pricing

Built by

Related APIs

NFT Collections API

Transaction Lookup API

ENS Resolver API

ERC-20 Token Info API

Frequently asked questions

Parameters

Parameters

Parameters

Parameters

Parameters

Code snippets

Ratings

Discussion

New thread

📌 🔒

Support

Open new ticket

Your cookie choices