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API · /cardanopools-api

Cardano Stake Pool API

healthy 3,534 Subscribers

Cardano's stake-pool operators (SPOs) — live from the public Koios indexer, no key. Cardano is delegated proof-of-stake: ADA holders delegate to stake pools run by independent operators, who mint blocks and earn rewards. The Cardano account reader resolves which pool a single stake account delegates to, but there is no registry of the pools themselves. This opens it. List every pool the chain knows with its operator margin, fixed cost and pledge; look up one pool in full — its registered identity (ticker, name, homepage, description) from off-chain metadata plus its on-chain economics: live delegated stake, saturation, delegator count, lifetime blocks and status; and read a pool's Mark / Set / Go stake snapshots, the three-epoch pipeline Cardano uses to compute rewards. The operator layer for Cardano wallets, staking dashboards, pool explorers and analytics. Distinct from the Cardano account reader (per-account delegation), the chain-economics reader, the native-token registry and the DRep governance reader. Live from the indexer; short cache only.

#cardano #ada #stake-pool #spo #staking #koios #crypto
api.oanor.com/cardanopools-api
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Machine-readable spec so AI agents can integrate this API.

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

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

Cardano Stake Pool API API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
1155 ms
Server probes · 24h
Subscribers
3,534
active
Total calls
20
last 7 days
status Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 8,800 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 8.8k calls/month
  • 3 req/sec
  • All endpoints
  • No credit card
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Starter

€10.40 /month

  • 162,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 162k calls/month
  • 10 req/sec
  • Email support
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Pro

€35.40 /month

  • 870,000 calls / month
  • 25 requests / second
  • Hard cap (429 above quota, no overage)
  • 870k calls/month
  • 25 req/sec
  • Priority support
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Scale

€97.00 /month

  • 5,600,000 calls / month
  • 60 requests / second
  • Hard cap (429 above quota, no overage)
  • 5.6M calls/month
  • 60 req/sec
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Cardano Governance Action API API

Cardano Governance Action API

Cardano's on-chain governance actions (proposals) of the Conway era — live from the public Koios indexer, no key. Anyone can submit a governance action — a treasury withdrawal, a protocol-parameter change, a hard-fork initiation, a new constitutional committee, a no-confidence motion — which DReps, stake pools and the constitutional committee then vote on. The Cardano DRep reader surfaces the voters; this is the other side of governance: the proposals themselves. List the governance actions with their type, deposit, return address and the lifecycle epochs they were proposed / ratified / enacted / dropped / expired, with a derived status; read a proposal's live voting tally broken down by the three governance bodies — DRep, SPO and committee Yes / No / Abstain vote counts, voting power (in ADA) and percentages; and read the individual votes cast on it, each with the voter's role and decision. The governance-action layer for Cardano wallets, voting tools, governance explorers and analytics. Distinct from the DRep governance reader (the voters), the stake-pool reader, the chain-economics reader and the native-token registry. Live from the indexer; short cache only.

api.oanor.com/cardanoproposals-api

 Cardano DRep Governance API API

Cardano DRep Governance API

Cardano's on-chain governance body — the DReps (Delegated Representatives) of the Voltaire era / CIP-1694 — live from the public Koios indexer, no key. In the Conway era ADA holders delegate their voting power to DReps, who vote on governance actions; the Cardano account reader resolves a single stake account's DRep choice, but there is no registry of the DReps themselves. This opens it. List every DRep with its registration and native-script status; look up one DRep in full — its live delegated voting power (the ADA whose vote it casts), its 500 ADA registration deposit, whether the mandate is still active and the epoch it expires; read the governance actions a DRep has voted on with each Yes / No / Abstain decision; and track the network-wide DRep population and total active voting power per epoch. The governance layer for Cardano wallets, voting tools, DRep explorers and analytics. Distinct from the Cardano account reader (per-account vote), the chain-economics reader and the native-token registry. Live from the indexer; short cache only.

api.oanor.com/cardanodreps-api

 Cardano Native Token Registry API API

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

 Cardano Chain API API

Cardano Chain API

Read live Cardano chain economics and epoch data from the public Koios indexer — no key — focused on the network-wide view that stake-account and asset readers miss. The tip endpoint returns the chain head: the current epoch, block height and slot. The epoch endpoint returns any epoch's activity — blocks produced, total transactions, total output and fees (in ADA) and the active stake securing it, with its start and end. And the supply endpoint returns Cardano's ADA monetary breakdown: total supply, circulating, reserves (still to be issued), treasury (the on-chain governance fund) and the reward pot, against the fixed 45-billion-ADA cap. The chain-economics layer every Cardano wallet, explorer, staker and analytics tool needs. Live from the indexer; short cache only.

api.oanor.com/cardanochain-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Cardano Stake Pool API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Cardano Stake Pool API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Cardano Stake Pool 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 Cardano Stake Pool API cost?
Cardano Stake Pool API has a free tier with 100 calls / month. Paid plans start at €10.40 / 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 Cardano Stake Pool API GDPR-compliant?
All requests to Cardano Stake Pool 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/cardanopools-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/cardanopools-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/cardanopools-api/SOME_PATH");
curl_setopt($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/cardanopools-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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