oanor
Sign up free
Marketplace Pricing Features Sign in

API · /flowcadence-api

Flow (Cadence) On-Chain API

healthy 3,330 Subscribers

The Flow blockchain's native Cadence layer, live from the official public Flow access REST API — no key, nothing cached. Flow runs two environments: an EVM layer and its own resource-oriented Cadence environment. The existing Flow reader covers the EVM side; this opens the Cadence layer it cannot see. Read a Cadence block by height — or the latest sealed block — with its id, parent block, timestamp and the number of collection guarantees and seals it carries. Look up any Cadence account for its FLOW balance, the number of account keys it holds and the Cadence smart contracts deployed under it. And read the live network status: the chain id, the access-node software version, the current spork id, the protocol state version and the compatible block-height range. The Cadence-on-chain layer for Flow wallets, explorers, dapp builders and analytics. Live from rest-mainnet.onflow.org.

#flow #cadence #onchain #blockchain #flow-token #accounts #crypto
api.oanor.com/flowcadence-api
Get an API key Try in playground → Contact provider

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

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

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

Flow (Cadence) On-Chain API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
128 ms
Server probes · 24h
Subscribers
3,330
active
Total calls
48
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 7,550 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 7.55k calls/month
  • 3 req/sec
  • All endpoints
  • No credit card
Sign in to subscribe

Starter

€8.80 /month

  • 136,000 calls / month
  • 9 requests / second
  • Hard cap (429 above quota, no overage)
  • 136k calls/month
  • 9 req/sec
  • Email support
Sign in to subscribe

Pro

€34.20 /month

  • 815,000 calls / month
  • 22 requests / second
  • Hard cap (429 above quota, no overage)
  • 815k calls/month
  • 22 req/sec
  • Priority support
Sign in to subscribe

Business

€89.50 /month

  • 5,150,000 calls / month
  • 55 requests / second
  • Hard cap (429 above quota, no overage)
  • 5.15M calls/month
  • 55 req/sec
  • Dedicated SLA
Sign in to subscribe

Built by

P
PremiumApi

Related APIs

Other APIs with overlapping tags.

Flow EVM Chain API — oanor API marketplace

Flow EVM Chain API

Live on-chain data for Flow EVM mainnet (the EVM-equivalent environment on the Flow blockchain, native FLOW) 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, NFT and gaming tooling, portfolio trackers and on-chain monitoring on Flow EVM.

api.oanor.com/flow-api

 SX Bet Sports Prediction Market API — oanor API marketplace

SX Bet Sports Prediction Market API

Live data for SX Bet, the on-chain sports prediction & betting exchange on SX Network, with no key. List the active sports-betting markets (moneyline, spread, total) with their two named outcomes, teams, league, sport and game time; get the supported sports; the active leagues with event counts; and the active fixtures (upcoming games) for any league. The peer-to-peer sports-prediction layer for odds dashboards, fixture monitors and sports-data apps — distinct from Polymarket, Kalshi and Limitless. Covers 29 sports across 100+ live markets.

api.oanor.com/sxbet-api

 Limitless Prediction Market API — oanor API marketplace

Limitless Prediction Market API

Live data for Limitless Exchange, the on-chain prediction market on Base, with no key. List the active markets with each market's title, live YES/NO implied-probability prices (0–1), traded volume, deadline and category tags; pull a single-market detail by slug; and get the full tag list. Prices are the live market-implied odds for each binary outcome, settled in USDC — distinct from Polymarket and Kalshi. Ideal for odds dashboards, event monitors and crypto-native sentiment analytics across 900+ live markets.

api.oanor.com/limitless-api

 Cardano Native Token Registry API — oanor API marketplace

Cardano Native Token Registry API

Cardano native tokens, live from the public Koios API — no key, nothing cached. On Cardano every token is a "native asset" identified by a policy id plus an asset name, minted under a Plutus or native minting policy. The Cardano on-chain reader lists the tokens held by an account, but there is no token registry in the marketplace; this opens it. Browse the verified token registry — the curated tokens that have submitted off-chain metadata, with their ticker, decimals, description and logo. Look up a single token in full with its on-chain facts: the asset fingerprint, total supply, how many times it has been minted and burned, and when it was first created. And list every native asset minted under a given policy id — one policy can mint a single fungible token or a whole NFT collection. The token layer for Cardano wallets, DEXs, token explorers and analytics. Live from api.koios.rest.

api.oanor.com/cardanotokens-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Flow (Cadence) On-Chain API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Flow (Cadence) On-Chain API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Flow (Cadence) 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 Flow (Cadence) On-Chain API cost?
Flow (Cadence) On-Chain API has a free tier with 100 calls / month. Paid plans start at €8.80 / 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 Flow (Cadence) On-Chain API GDPR-compliant?
All requests to Flow (Cadence) On-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/flowcadence-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/flowcadence-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/flowcadence-api/SOME_PATH");
curl_setopt($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/flowcadence-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

Ratings

Sign in to rate.

No reviews yet.

Discussion

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

Sign in to start a thread or reply.

Sign in

New thread

/ 4000

📌 Pinned 🔒 Locked

·

· ·

/ 4000

🔒 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.

Sign in to open a support ticket.

Sign in

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.