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API · /stellar-api

Stellar (XLM) On-Chain API

healthy 4,271 Subscribers

Live on-chain data from the Stellar network, the open blockchain for payments and asset issuance behind the lumen (XLM), served straight from Stellar's public Horizon API — no key, nothing cached. The account endpoint returns any address's full wallet: its XLM balance and every issued asset it holds — Stellar is the home of anchored stablecoins like USDC, so a wallet shows native lumens alongside its tokens, each with the asset code, issuer and balance — plus the account sequence, sub-entry count and home domain. The payments endpoint returns the account's most recent payments in and out, each with the counterparty, asset, amount and time. The transactions endpoint returns the account's recent transactions with the ledger, fee, operation count, success flag and memo. The network endpoint returns the live state of the network itself: the latest ledger, the base fee and the fee percentiles and ledger capacity that tell you how congested the network is. Everything is read live from Horizon, nothing stored. This is the Stellar on-chain layer for any wallet, anchor, exchange, payments or analytics app. Distinct from the XRP Ledger, EVM and Solana on-chain APIs and from price feeds — this is Stellar account state, multi-asset balances, payments and network health. 4 endpoints, no key on our side.

#stellar #xlm #lumens #crypto #on-chain #blockchain #payments #stablecoins
api.oanor.com/stellar-api
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Machine-readable spec so AI agents can integrate this API.

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

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

Stellar (XLM) On-Chain API — live data on the oanor API marketplace

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
291 ms
Server probes · 24h
Subscribers
4,271
active
Total calls
95
last 7 days
status Full status page → · 15 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 4,000 calls / month
  • 5 requests / second
  • Hard cap (429 above quota, no overage)
  • 4,000 calls/month
  • 5 req/sec
  • Account, balances, network
  • No credit card
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Starter

€12.00 /month

  • 95,000 calls / month
  • 12 requests / second
  • Hard cap (429 above quota, no overage)
  • 95,000 calls/month
  • 12 req/sec
  • Payments + transactions
  • Email support
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Pro

€30.00 /month

  • 580,000 calls / month
  • 30 requests / second
  • Hard cap (429 above quota, no overage)
  • 580,000 calls/month
  • 30 req/sec
  • Wallet & anchor pipelines
  • Priority support
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Mega

€74.00 /month

  • 3,300,000 calls / month
  • 80 requests / second
  • Hard cap (429 above quota, no overage)
  • 3,300,000 calls/month
  • 80 req/sec
  • Exchange & analytics scale
  • Dedicated SLA
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Related APIs

Other APIs with overlapping tags.

Stellar DEX (SDEX) Order Book & Trades API — oanor API marketplace

Stellar DEX (SDEX) Order Book & Trades API

The Stellar Decentralized Exchange (SDEX) central-limit order book, live from the public Stellar Horizon API — no key, nothing cached. Where the pools reader covers Stellar's AMM and the asset reader covers token metadata, this surfaces the on-chain order book the others miss. Pull the live bids and asks for any asset pair with their price and amount, plus the derived best bid, best ask, mid price and spread. Get a compact ticker for a pair — best bid/ask, mid, spread and the last executed trade. And read the most recent executed trades, network-wide or filtered to a single pair, with their price and base/counter amounts. Defaults to the deeply-traded XLM/USDC pair; quote any pair by passing the selling and buying assets (asset code plus issuer, or XLM for native). The order-book-and-trading layer for Stellar wallets, swap UIs, market-makers and analytics. Live from horizon.stellar.org.

api.oanor.com/stellardex-api

 Stellar Pools API — oanor API marketplace

Stellar Pools API

Read live Stellar liquidity pools — the network's native automated market maker — straight from the public Horizon API, no key. Every Stellar pool is a constant-product market maker between two assets; this surfaces what asset and order-book readers miss: browse the pools with their two reserves, fee, share count and the number of trustlines (participants); read any single pool by its id; or find every pool that holds a given asset, against XLM or another token, to see exactly where a token has on-chain liquidity and at what depth. The automated-market-maker layer for Stellar wallets, anchors, swap UIs, liquidity providers and analytics. Live from the network; short cache only.

api.oanor.com/stellarpools-api

 Stellar Asset API — oanor API marketplace

Stellar Asset API

Read live data on Stellar assets and the native Stellar DEX, straight from the public Horizon API — no key. Resolve any issued asset (code plus issuer) to its on-chain stats: total authorized supply, number of holding accounts, claimable-balance, liquidity-pool and Soroban-contract amounts, the authorization flags (auth required, revocable, clawback) that tell you how tightly the issuer controls it, and its Soroban contract id. List every issuer of an asset code to survey them and spot impersonators — anyone can issue an asset with any code, so verifying the exact issuer matters. And pull the live order book for an asset against XLM (or any counter asset) on Stellar's built-in decentralized exchange — best bid, best ask and the spread. Distinct from account-, payment- and transaction-level APIs: this is the asset-and-market layer for Stellar wallets, anchors, stablecoin issuers and trading tools. Live from the network; short cache only.

api.oanor.com/stellarasset-api

 Lighting Calculator API — oanor API marketplace

Lighting Calculator API

Lighting design maths as an API, computed locally and deterministically. The room endpoint works out how many lumens a room needs from its area and a target illuminance — given directly in lux or chosen from a room-type preset (living, kitchen, office, workshop and more) — and, optionally, how many fixtures at a given lumen output and how many watts at a given lamp type. The lux endpoint converts between lux, footcandles and lumens over an area, so you can find the illuminance from a light output and a room size or vice versa. The efficacy endpoint relates lumens, watts and luminous efficacy (lumens per watt): give any two — or a lamp-type preset such as incandescent, halogen, CFL or LED — and it computes the third. Everything is computed locally and deterministically, so it is instant and private. It is a lumen-method estimate: target levels are typical guidance (EN 12464 / IES) and a full design would add room and utilisation factors. Ideal for lighting and electrical tools, interior-design and home apps, retrofit and energy-saving calculators, and smart-home planning. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 3 endpoints. This is illumination maths; for Ohm's-law electrical quantities use an electronics API.

api.oanor.com/lighting-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Stellar (XLM) On-Chain API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Stellar (XLM) On-Chain API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Stellar (XLM) 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 Stellar (XLM) On-Chain API cost?
Stellar (XLM) On-Chain API has a free tier with 100 calls / month. Paid plans start at €12.00 / 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 Stellar (XLM) On-Chain API GDPR-compliant?
All requests to Stellar (XLM) 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/stellar-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/stellar-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/stellar-api/SOME_PATH");
curl_setopt($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/stellar-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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