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API · /plasma-api

Plasma API

healthy 3,707 Subscribers

Real-time on-chain data for Plasma (chain-id 9745) — the stablecoin-native EVM Layer-1 anchored to Bitcoin and purpose-built for high-volume, low-cost stablecoin (USD₮) payments. Query live network status (latest block height, network id, client version), fetch any block by height or the latest one (timestamp, transaction count, gas used / limit, base fee, miner), read the current gas price in wei and gwei, and look up the native XPL balance and transaction count of any address. A keyless, no-account JSON wrapper over the canonical Plasma JSON-RPC node — decoded from hex into plain decimals and human-readable XPL so you do not have to. Ideal for explorers, wallets, payment dashboards, gas estimators and analytics on the Plasma chain.

#plasma #stablecoin #ethereum-l1 #bitcoin-anchored #payments #blockchain #crypto #evm
api.oanor.com/plasma-api
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Machine-readable spec so AI agents can integrate this API.

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

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

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
117 ms
Server probes · 24h
Subscribers
3,707
active
Total calls
5
last 7 days
status Full status page → · 10 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 5,600 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 5.6k calls/month
  • 3 req/sec
  • All 5 endpoints
  • No credit card
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Basic

€12.80 /month

  • 63,000 calls / month
  • 10 requests / second
  • Hard cap (429 above quota, no overage)
  • 63k calls/month
  • 10 req/sec
  • Status, blocks, gas & balances
  • Email support
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Pro

€35.40 /month

  • 229,000 calls / month
  • 25 requests / second
  • Hard cap (429 above quota, no overage)
  • 229k calls/month
  • 25 req/sec
  • Higher throughput
  • Priority support
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Mega

€75.60 /month

  • 970,000 calls / month
  • 60 requests / second
  • Hard cap (429 above quota, no overage)
  • 970k calls/month
  • 60 req/sec
  • Production scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Stablecoin Supply API

Live circulating supply, chain distribution and supply history for any stablecoin, keyless. For one stablecoin (USDT, USDC, DAI, USDe) get its total circulating supply, peg type and mechanism, price, 1d/7d/30d supply change and market dominance; the per-chain breakdown of where that supply actually lives; and the circulating-supply history over time, for the whole asset or a single chain. Search 370+ stablecoins to find an id. Live, nothing stored. The single-stablecoin supply layer for treasury, risk, research and dashboard apps — distinct from whole-ecosystem stablecoin feeds, this is one stablecoin in depth.

api.oanor.com/stablecoinsupply-api

Spark Protocol API

Live protocol metrics for Spark (the Sky / former MakerDAO ecosystem capital-allocation protocol), keyless. Both Spark products: SparkLend, the lending money-market with per-asset supply APY and TVL, and Spark Savings, the sUSDS / USDS / USDC / USDT savings products passing through the Sky Savings Rate — a savings-yield dimension other lending APIs do not have. Plus total value locked and per-chain TVL. One combined overview endpoint snapshots it all. Live, nothing stored. The Spark-metrics layer for DeFi dashboards, lending, savings, stablecoin and yield apps — distinct from pure lending protocols, this is Spark lending-plus-savings model specifically.

api.oanor.com/spark-api

Liquity Protocol API

Live protocol metrics for Liquity, the original immutable decentralized borrowing protocol that issues the LUSD and BOLD stablecoins against ETH and liquid-staking-token collateral, keyless. Get the total collateral locked, the breakdown of which assets back the stablecoins (ETH, wstETH, rETH across Liquity v1 + v2), per-chain TVL, and the Liquity pools (stability pools / earning positions) with their APY. One combined overview endpoint snapshots it all. Live, nothing stored. The CDP / decentralized-stablecoin metrics layer for DeFi dashboards, stablecoin, risk and yield apps — distinct from DEX, lending, restaking and yield protocols, this is Liquity collateralized-debt model specifically.

api.oanor.com/liquity-api

Stablecoin Chain Distribution API

Where dollar stablecoin liquidity actually lives, read live and keyless from each blockchain. USDC and USDT are issued natively on many chains, and the split between them is one of the most-watched signals in the layer-2 wars: Ethereum mainnet still holds the bulk, but Base, Arbitrum and the other rollups have been pulling stablecoin supply across as activity migrates. This API reads the native USDC and USDT supply directly from the token contract on each chain — Ethereum, Base, Arbitrum, Optimism, Polygon and Avalanche — not a single chain and not an aggregator, so you see the real on-chain distribution. The stablecoin endpoint takes a symbol (USDC or USDT) and returns its supply on every tracked chain, ranked, each with its share of that stablecoin and the Ethereum-versus-rollup split. The chains endpoint ranks the chains by their total native stablecoin liquidity (USDC and USDT together) — which chain hosts the most dollars. The summary endpoint is the top-down view: total USDC, total USDT, the combined total, the USDT-to-USDC ratio, and Ethereum's dominance versus the share that has moved to the rollups. Because USDC and USDT are dollar-pegged and read at the token's own on-chain decimals (read live from each contract, never assumed), the supply equals the dollars of stablecoin on that chain; only natively-issued supply is counted (bridged and peg tokens are excluded). This is the stablecoin chain-distribution cut — distinct from the single-chain token feeds, the generic stablecoin-supply aggregators and the price feeds: it is specifically the cross-chain liquidity map. Amounts are in US dollars. No key, nothing stored beyond a short cache.

api.oanor.com/stablecoinchains-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Plasma API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Plasma API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Plasma 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 Plasma API cost?
Plasma API has a free tier with 100 calls / month. Paid plans start at €12.80 / 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 Plasma API GDPR-compliant?
All requests to Plasma 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/plasma-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/plasma-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/plasma-api/SOME_PATH");
curl_setopt($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/plasma-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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