API · /starknet-api

Starknet API

healthy 4,728 Subscribers

Live on-chain data from Starknet, the Ethereum Layer 2 zk-rollup built on the Cairo VM and STARK proofs, via a public Starknet JSON-RPC node. Starknet has no externally-owned accounts: every account is a smart contract with native account abstraction, and fees are paid in STRK or ETH. Resolve an address's transaction nonce, the account contract class it runs and its STRK and ETH balances, read straight from the fee-token contracts. Get a block's number, hash, status, timestamp, sequencer and transaction count. Look up any transaction with its type, finality and execution status, the address that sent it and the actual fee paid. Read the live chain state — the chain id, the JSON-RPC spec version, the latest block and whether the node is syncing. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Cosmos, Sui, NEAR, MultiversX, Solana and EVM on-chain APIs and from price feeds — this is Starknet's Cairo-account state, balances, blocks and transactions. Perfect for wallets, explorers and analytics apps.

#starknet #cairo #blockchain #crypto #on-chain #layer2 #zk-rollup #web3

api.oanor.com/starknet-api

Get an API key Try in playground → Contact provider

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

/api/starknet-api/openapi.json

/api/starknet-api/llms.txt

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

Starknet API — live data on the oanor API marketplace

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 860 ms; Server probes · 24h
Subscribers: 4,728; active
Total calls: 80; last 7 days

Full status page → · 16 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

7,200 calls / month
2 requests / second
Hard cap (429 above quota, no overage)
7.2k calls/month
2 req/sec
Account + block + transaction + network
No credit card

Starter

€14.00 /month

144,000 calls / month
5 requests / second
Hard cap (429 above quota, no overage)
144k calls/month
5 req/sec
Email support

Pro

€38.00 /month

875,000 calls / month
15 requests / second
Hard cap (429 above quota, no overage)
875k calls/month
15 req/sec
Priority support

Business

€89.00 /month

4,600,000 calls / month
40 requests / second
Hard cap (429 above quota, no overage)
4.6M calls/month
40 req/sec
Dedicated SLA

Built by

PremiumApi

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Meter API

Live EVM on-chain data for Meter (chain id 82) — the HotStuff-BFT proof-of-stake Layer-1 whose native gas token is MTR — served directly from public EVM JSON-RPC nodes with multi-node failover. The status endpoint returns the chain and network id, the latest block height and the node client version. The block endpoint returns a block by number (or the latest) with its hash, parent hash, timestamp, transaction count, gas used and gas limit, miner and size. The gas endpoint returns the current gas price in both wei and gwei. The balance endpoint returns the MTR balance and outgoing transaction count for any address, converted from base wei (18 decimals) into whole MTR with exact big-integer scaling. Every figure is read live from the chain over JSON-RPC — nothing bundled or modelled — behind a short server-side cache with keep-warm so the feed stays fast and fresh. Ideal for explorers, wallet and dashboard tooling, gas trackers, address monitors and analytics apps across the Meter ecosystem. Live keyless upstream. 5 endpoints.

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api.oanor.com/songbird-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Starknet API?

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

What's the rate limit for Starknet 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 Starknet API cost?

Starknet API has a free tier with 100 calls / month. Paid plans start at €14.00 / 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 Starknet API GDPR-compliant?

All requests to Starknet 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.

Account 1

Transaction 1

Block 1

Network 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/account

Account nonce, class + STRK/ETH balances

Playground

Parameters

Custom headers

Language: Client:

GET /v1/transaction

Transaction with status and fee

Playground

Parameters

Custom headers

Language: Client:

GET /v1/block

Block details

Playground

Parameters

Custom headers

Language: Client:

GET /v1/network

Live chain state

Playground

Custom headers

Language: Client:

Code snippets

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

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

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

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Starknet API

API health

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Related APIs

Paradex Perps & Options DEX API

The Egyptian Exchange (EGX) API

Meter API

Songbird API

Frequently asked questions

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