API · /txlookup-api

Transaction Lookup API

healthy 3,771 Subscribers

Live blockchain transaction, receipt and block lookup, read straight from the chain's public JSON-RPC node — no key, nothing cached. Give it a transaction hash and the transaction endpoint returns the full picture: the sender and recipient, the value moved (in wei and human ETH), the gas limit and gas price, the nonce, the block it landed in, the input-data size, and — by also reading the receipt — whether it succeeded or failed, the gas actually used, the effective gas price, the fee paid in ETH, the number of event logs it emitted, any contract it created and how many confirmations it now has. The receipt endpoint returns just the execution result (status, gas used, logs, contract address). The block endpoint takes a block number or "latest" and returns its timestamp, transaction count, gas used and limit with utilisation, base fee and miner. It works across seven EVM chains — Ethereum, Polygon, BNB Smart Chain, Arbitrum, Optimism, Base and Avalanche — with friendly aliases (eth, matic, bnb, arb, op, avax). This is the explorer-grade transaction layer every wallet, payment processor, dapp and dashboard needs to confirm and inspect on-chain activity. Read live from the chain, nothing stored. Distinct from balance, token-metadata and name-resolution APIs — this is transaction, receipt and block data read directly from the blockchain. 4 endpoints across 7 chains.

#transaction #blockchain #ethereum #web3 #explorer #receipt #crypto

api.oanor.com/txlookup-api

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

/api/txlookup-api/openapi.json

/api/txlookup-api/llms.txt

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

API health

healthy

Uptime: 100.00%; Server probes · 24h
Avg latency: 128 ms; Server probes · 24h
Subscribers: 3,771; active
Total calls: 44; last 7 days

Full status page → · 8 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

10,500 calls / month
3 requests / second
Hard cap (429 above quota, no overage)
10,500 calls/month
3 req/sec
Transaction, receipt & block lookup
7 EVM chains

Starter

€9.50 /month

135,000 calls / month
8 requests / second
Hard cap (429 above quota, no overage)
135,000 calls/month
8 req/sec
Status, fee, gas, logs & confirmations
Email support

Pro

€24.50 /month

640,000 calls / month
15 requests / second
Hard cap (429 above quota, no overage)
640,000 calls/month
15 req/sec
Wallet, payment & dapp pipelines
Priority support

Scale

€59.00 /month

3,200,000 calls / month
30 requests / second
Hard cap (429 above quota, no overage)
3,200,000 calls/month
30 req/sec
Explorer & monitoring scale
Dedicated SLA

Built by

PremiumApi

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DeSo Decentralized Social API

Live data from DeSo (Decentralized Social), a layer-1 blockchain purpose-built for social media where every profile, post and follow lives on-chain and each creator has their own tradeable creator coin — read from a public DeSo node, no key, nothing stored. The profile endpoint returns a username's on-chain profile: description, verification, profile picture and the creator-coin economy behind it — coin price in DESO, DeSo locked into the coin, coins in circulation and the founder reward. The followers endpoint returns the follower and following counts. The posts endpoint returns a creator's posts, each with its on-chain engagement: likes, diamonds (direct on-chain tips), comments and reposts. The feed endpoint returns the newest posts across the whole network. Look up any DeSo creator, read their reach and creator-coin valuation, and pull their content as structured JSON. This is a social-blockchain cut with a built-in creator-coin economy — distinct from the other decentralized-social platforms and from the crypto price and market APIs in the catalogue.

api.oanor.com/deso-api

Hive Engine API

Live data from the Hive-Engine smart-contract sidechain — a Layer-2 token registry and decentralized exchange built on the Hive blockchain. Look up any Hive-Engine token's on-chain registry record (issuer, precision, max / current / circulating supply, staking status and total staked), read its live DEX market metrics (last price in HIVE, highest bid, lowest ask, 24h volume and the day's price change), pull the richlist of its largest holders with their liquid balance, staked amount and delegations, and stream the most recent fills on its HIVE market (buyer, seller, quantity, price and time). Symbols are Hive-Engine tokens such as LEO, BEE, SWAP.HIVE or SPS; prices and market volume are denominated in HIVE, the base-chain coin. This is the token-sidechain / on-chain-DEX view — per-token supply, holders and an internal order-book market — distinct from the single-venue exchange tickers, the cross-exchange coin-markets and the base-chain on-chain APIs in the catalogue. Live and read straight from a public Hive-Engine RPC node — nothing stored.

api.oanor.com/hiveengine-api

Monero Network API

Live network and blockchain data from Monero (XMR), the leading privacy cryptocurrency — no key, nothing stored. The network endpoint returns the live chain state: block height, difficulty, an estimated network hashrate, the mempool size, peer connections, hard-fork version and median block size. The block endpoint returns a block by height — its hash, size, timestamp and transaction count. The mempool endpoint returns the current unconfirmed-transaction pool with a sample of pending transactions and their fees. Data comes live from a public Monero blockchain-explorer node. Monero is privacy-preserving, so individual balances and amounts are unobservable — this is network/aggregate data, distinct from the exchange-ticker, market and transparent-chain APIs in the catalogue. Built for Monero dashboards, network monitors, mining tooling and explorers.

api.oanor.com/monero-api

Steem API

Read the Steem blockchain and its social layer (Steemit) live — no key needed. The account endpoint returns a Steemit account's social profile and on-chain stats: display name, about, location, website, reputation score, post count, STEEM and SBD balances and the account-creation date. The trending endpoint returns the posts trending on Steemit right now (author, title, votes, pending payout, optional tag). The network endpoint returns chain-wide stats — head block and current/virtual STEEM supply. Data comes live from Steem's own public RPC node — nothing cached, nothing stored. Steem is a distinct blockchain-social network, separate from Hive since the 2020 fork. Built for social dashboards, creator analytics, on-chain explorers and trend monitoring.

api.oanor.com/steem-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Transaction Lookup API?

Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Transaction Lookup API with the x-oanor-key header. No credit card needed for the free tier.

What's the rate limit for Transaction Lookup 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 Transaction Lookup API cost?

Transaction Lookup API has a free tier with 100 calls / month. Paid plans start at €9.50 / 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 Transaction Lookup API GDPR-compliant?

All requests to Transaction Lookup 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.

Transaction 2

Block 1

Meta 1

Pick an endpoint from the list on the left to see its details and try it.

GET /v1/receipt

Execution receipt by hash

Playground

Parameters

Custom headers

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GET /v1/transaction

Transaction + receipt by hash

Playground

Parameters

Custom headers

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GET /v1/block

Block summary

Playground

Parameters

Custom headers

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GET /v1/meta

Spec

Playground

Custom headers

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Code snippets

curl https://api.oanor.com/txlookup-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."

const res = await fetch("https://api.oanor.com/txlookup-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();

$ch = curl_init("https://api.oanor.com/txlookup-api/SOME_PATH");
curl_setopt($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/txlookup-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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Transaction Lookup API

API health

Pricing

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Related APIs

DeSo Decentralized Social API

Hive Engine API

Monero Network API

Steem API

Frequently asked questions

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