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API · /contractverify-api

Contract Verification API

healthy 3,924 Subscribers

Check whether any EVM smart contract source code is verified and pull its ABI, source files and deployment details, keyless. Give it a chain id and contract address and get the verification status (full / partial / not verified), the compiler and contract name, the deployment info (deployer, transaction, block), the contract ABI (the JSON interface every integration needs), and the verified Solidity source. Live, nothing stored. The contract-verification / ABI layer for security, due-diligence, block-explorer, wallet and dapp tooling — backed by the open Sourcify registry, distinct from price, TVL and chain-registry APIs.

#contract #verification #sourcify #abi #evm #security #crypto
api.oanor.com/contractverify-api
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Machine-readable spec so AI agents can integrate this API.

/api/contractverify-api/openapi.json
/api/contractverify-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
3,924
active
Total calls
20
last 7 days
status Full status page → · 12 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 3,800 calls / month
  • 3 requests / second
  • Hard cap (429 above quota, no overage)
  • 3,800 calls/month
  • 3 req/sec
  • Status · ABI · source
  • No credit card
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Starter

€11.80 /month

  • 95,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 95k calls/month
  • 8 req/sec
  • Any EVM chain
  • Email support
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Pro

€39.50 /month

  • 620,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 620k calls/month
  • 20 req/sec
  • ABI extraction at scale
  • Priority support
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Business

€119.00 /month

  • 4,000,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 4M calls/month
  • 50 req/sec
  • Commercial use
  • Dedicated SLA
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api.oanor.com/keybase-api

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Sui Modules API

Inspect the Move smart-contract code published in any Sui package, live from a public Sui fullnode JSON-RPC — no key. Sui contracts are published as packages of Move modules; this reads their normalized ABI: list every module in a package, read a module's exposed functions (visibility, entry flag, type parameters with their abilities, parameter and return type tags) and struct definitions, or drill straight into a single function's signature. Unlike object- and coin-readers, this exposes the callable interface itself — exactly what a Sui package lets you do — the layer Sui wallets, explorers, programmable-transaction-block builders and SDK and binding generators need before they can construct a transaction. Reads straight from the chain; live, short cache only.

api.oanor.com/suimodules-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for Contract Verification API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call Contract Verification API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for Contract Verification 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 Contract Verification API cost?
Contract Verification API has a free tier with 100 calls / month. Paid plans start at €11.80 / 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 Contract Verification API GDPR-compliant?
All requests to Contract Verification 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/contractverify-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/contractverify-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/contractverify-api/SOME_PATH");
curl_setopt($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/contractverify-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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