Address balance & contract info
API · /matic-api
Polygon (MATIC) On-Chain API
Live Polygon PoS on-chain data as an API, built on the open Blockscout explorer. Polygon (chain id 137) is one of the most-used Ethereum-compatible networks; its native currency is POL (formerly MATIC) and fees are tiny. Pull network stats (total blocks and transactions, POL price, live gas), a gas oracle with slow, average and fast prices in gwei, the most recent blocks and full block detail by height or hash. Look up any address for its POL balance and contract status, any transaction by hash for its value, fee, status, sender and receiver, and any ERC-20 token by contract for its name, symbol, decimals, holders and USD rate. A universal search resolves addresses, tokens, blocks and transactions in one call. Real on-chain data, no key needed upstream. Ideal for Polygon wallets, block explorers, gas trackers, DeFi and NFT dashboards and on-chain analytics.
API health
healthy- Uptime
- 100.00%
- Server probes · 24h
- Avg latency
- 757 ms
- Server probes · 24h
- Subscribers
- 3,599
- active
- Total calls
- 81
- last 7 days
Pricing
Pick a tier — billed monthly, cancel anytime.
Free
Free
- 6,500 calls / month
- 2 requests / second
- Hard cap (429 above quota, no overage)
- 6,500 calls/month
- 2 req/sec
- Stats + gas + blocks
- No credit card
Starter
€6.50 /month
- 98,000 calls / month
- 8 requests / second
- Hard cap (429 above quota, no overage)
- 98k calls/month
- 8 req/sec
- Address + tx + token lookup
- Email support
Pro
€25.00 /month
- 560,000 calls / month
- 25 requests / second
- Hard cap (429 above quota, no overage)
- 560k calls/month
- 25 req/sec
- Polygon wallets / dashboards
- Priority support
Mega
€82.00 /month
- 2,750,000 calls / month
- 50 requests / second
- Hard cap (429 above quota, no overage)
- 2.75M calls/month
- 50 req/sec
- DeFi / NFT analytics platform
- Dedicated SLA
Built by
Related APIs
Other APIs with overlapping tags.
Polygon Geometry API
Computational geometry for arbitrary polygons and point sets — on a plane, with no map or shape templates needed. The area endpoint takes a polygon as a list of [x,y] vertices and returns its area (by the shoelace formula), perimeter, centroid, winding orientation (clockwise or counter-clockwise), whether it is convex, and its bounding box. The contains endpoint tests whether a point is inside a polygon, outside it, or exactly on its boundary, using robust ray casting that handles concave shapes correctly. The convex-hull endpoint computes the convex hull of a set of points by Andrew's monotone chain, along with its area and perimeter. It works for any simple polygon, convex or concave. Everything is computed locally and deterministically, so it is instant and private. Ideal for graphics and game development, GIS and mapping, CAD and collision detection, computational geometry, and data visualisation. Pure local computation — no key, no third-party service, instant. Live, nothing stored. 4 endpoints. This is planar polygon geometry; for the area of named shapes (circle, triangle, …) use a geometry API and for geographic GeoJSON area on the earth use a GeoJSON API.
api.oanor.com/polygon-api
Crypto Treasury API
Live data on the public companies that hold Bitcoin and Ethereum on their balance sheets, from the public CoinGecko feed. Rank every public company by how much of the coin it holds, with current and entry value, average entry price, country and share of total supply; get the aggregate corporate holdings, USD value and market-cap dominance; find a specific holder by name, ticker or country; and compare Bitcoin and Ethereum corporate treasuries side by side. The corporate crypto-treasury layer — distinct from price and exchange feeds: it answers who holds how much, and what they paid. Live, with a short 60-second upstream cache.
api.oanor.com/cryptotreasury-api
Across Bridge API
Live cross-chain bridge data from Across, one of the largest intent-based bridges, which moves USDC, ETH, WBTC and other assets between Ethereum and its rollups (Arbitrum, Base, Optimism, Polygon, zkSync, Linea, Blast, Scroll and more) using a relayer network and a single unified liquidity pool. The quote endpoint prices a bridge transfer — the relayer capital fee, gas fee, LP fee, total fee, the amount received and the estimated fill time. The routes endpoint lists every supported bridge route (origin chain, destination chain, token). The limits endpoint returns the min and max bridgeable amount for a route. The chains endpoint lists supported chains. Read live from Across, nothing stored. This is Across's own cross-chain bridge fee, route and fill-time layer — distinct from DEX, lending, staking and price feeds.
api.oanor.com/across-api
Balancer API
Live data from Balancer, a leading multi-chain decentralised AMM whose programmable liquidity pools (weighted, stable, gyro, boosted) power swaps and yield across Ethereum, Arbitrum, Base, Polygon, Avalanche, Gnosis, Optimism and more. The pools endpoint returns the top pools by TVL on a chain — each with its type, total liquidity, 24h volume and fees, total APR (with a yield/swap/staking breakdown) and constituent tokens. The pool endpoint returns one pool's full state by id, including swap and holder counts and the full APR breakdown. The token endpoint returns a token's live Balancer price plus its symbol, name and decimals. The tokens endpoint searches the token registry by symbol or name. Read live from Balancer, nothing stored. This is Balancer's own programmable-pool AMM, TVL/volume/APR and token-pricing layer — distinct from constant-product DEX feeds, Curve's stableswap and order-book or perps DEX feeds.
api.oanor.com/balancer-api
Frequently asked questions
Quick answers about pricing, quotas, and integration.
How do I get an API key for Polygon (MATIC) On-Chain API?
What's the rate limit for Polygon (MATIC) On-Chain API?
How much does Polygon (MATIC) On-Chain API cost?
Can I cancel my subscription anytime?
Is Polygon (MATIC) On-Chain API GDPR-compliant?
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/matic-api/SOME_PATH \
-H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/matic-api/SOME_PATH", {
headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/matic-api/SOME_PATH");
curl_setopt($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/matic-api/SOME_PATH",
headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())
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