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API · /cosmos-api

Cosmos Hub API

healthy 3,992 Subscribers

Live on-chain data from the Cosmos Hub (ATOM), the flagship Cosmos-SDK / Tendermint chain and the hub of the inter-blockchain-communication ecosystem. The Cosmos Hub is a proof-of-stake chain built around validators and delegation. Resolve an address's liquid ATOM balance together with everything it has delegated, the validators it stakes to and its total staked amount. Read a validator's full state — its moniker and website, its voting power in ATOM, its commission rate and cap, whether it is bonded or jailed, and its self-described identity. Get the active validator set ranked by voting power. Read the live chain economics — the bonded and unbonded ATOM, the bonded ratio, the total ATOM supply, the current annual staking inflation, the community-pool balance and the active validator count. Live, no key, nothing stored. Distinct from the XRP Ledger, Stellar, TRON, Aptos, Algorand, Tezos, Cardano, Hedera, Kaspa, Solana and EVM on-chain APIs and from price feeds — this is Cosmos Hub account state, delegation, validators and staking economics. Perfect for wallets, explorers, staking dashboards and analytics apps.

#cosmos #atom #blockchain #crypto #on-chain #staking #validators #web3
api.oanor.com/cosmos-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
296 ms
Server probes · 24h
Subscribers
3,992
active
Total calls
8
last 7 days
status Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 7,000 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 7k calls/month
  • 2 req/sec
  • Account + validator + validators + network
  • No credit card
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Starter

€14.00 /month

  • 155,000 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 155k calls/month
  • 5 req/sec
  • Email support
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Pro

€37.00 /month

  • 910,000 calls / month
  • 15 requests / second
  • Hard cap (429 above quota, no overage)
  • 910k calls/month
  • 15 req/sec
  • Priority support
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Business

€85.00 /month

  • 4,800,000 calls / month
  • 40 requests / second
  • Hard cap (429 above quota, no overage)
  • 4.8M calls/month
  • 40 req/sec
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Kava DeFi & USDX Money Market API

Live on-chain DeFi data from the Kava blockchain — a Cosmos-SDK Layer-1 whose core is a decentralised money market: users lock collateral to mint the USDX stablecoin (collateralised debt positions, CDPs) and lend/borrow through the Hard money market, valued by an on-chain price oracle. Served live from a public Kava REST node as clean JSON. Read the chain head (chain id, block height and time); see every collateral type with its liquidation ratio, stability fee, debt limit and the total USDX currently minted against it — the heart of Kava's lending engine; pull the on-chain pricefeed oracle prices the protocol uses to value collateral; or read the circulating USDX and KAVA supply. Read live from Kava, nothing cached. This is Kava's own CDP, USDX-stablecoin and oracle layer — distinct from the Cosmos Hub, Injective, Celestia and other Cosmos-chain APIs and from price feeds.

api.oanor.com/kava-api

Chain Stats API

Live blockchain network statistics across 18 chains, from the public Blockchair feed. Get one network's full stats — price, market cap and dominance, block height, 24h transactions, circulating supply, difficulty, hashrate, mempool size and average fee; compare the major chains side by side, ranked by market cap; and read a chain's mempool congestion (pending transactions, size and fees). A multi-chain network-stats layer — distinct from single-coin price feeds and Bitcoin-only on-chain APIs: it answers how each blockchain is performing right now and how they compare. Live, with a 10-minute upstream cache.

api.oanor.com/chainstats-api

Dash On-Chain API

Live on-chain data from the Dash (DASH) blockchain — a payments-focused cryptocurrency — via the public Dash Insight explorer, clean JSON and no cache. Dash uses X11 proof-of-work plus a second tier of collateralised masternodes that power InstantSend (near-instant locked payments) and ChainLocks, and an on-chain treasury that funds proposals. Read the chain state (block height, difficulty, peer connections, protocol version and relay fee); fetch a block by height or hash; look up an address's DASH balance, total received and sent and transaction count; or resolve a transaction's block, value, fee, input/output counts and its InstantSend lock status. Read live from Dash, nothing stored. This is Dash's own X11, masternode-tier and InstantSend ledger — distinct from the Bitcoin, Decred, Ergo, Nervos and other on-chain APIs and from price feeds.

api.oanor.com/dash-api

Conflux On-Chain API

Live on-chain data from the Conflux (CFX) network — a high-throughput Layer-1 that orders blocks with the Tree-Graph DAG consensus (not a single chain) and runs two spaces: the native Core space (cfx: addresses) and an EVM-compatible eSpace. Served live from a public Conflux Core-space JSON-RPC node as clean JSON. Conflux is distinctive for its storage-collateral model and a built-in proof-of-stake interest rate. Read the chain state (chain id, current epoch, block number, latest-finalized epoch, pending-tx count and the PoS interest rate); the supply (circulating, issued, staked and storage-collateral CFX); a block (the pivot block of an epoch) by epoch number or hash; or a Core-space address's CFX balance and staked balance. Read live from Conflux, nothing cached. This is Conflux's own Tree-Graph, storage-collateral and PoS layer — distinct from the Bitcoin, Decred, Ergo, Nervos and other on-chain APIs and from price feeds.

api.oanor.com/conflux-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

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

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