Free Crypto API

Everything you need to start building — blockchain data, market prices, and wallet infrastructure across 35+ networks, free to get started.

CryptoAPIs gives developers a free tier to build on real blockchain data — transaction and address data, market prices, HD wallets, and webhooks — through a single REST API across Bitcoin, Ethereum, and 35+ other blockchains. No infrastructure to run, no credit card to start.

Free tier with real blockchain data — no credit card required
One API, 35+ networks — Bitcoin, Ethereum, and more
Scale when ready — upgrade to paid plans as your usage grows
Start Building Book a call

One integration. Infinite possibilities

Get access to over 100+ endpoints using a single point of integration.

Get Address Balance
GET
Get Transaction Details
GET
List Token Transfers
GET
Get Last Mined Block
GET
Get Exchange Rate
GET
Get Fee Recommendations
GET
Get Address Balance
GET
View Docs 
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "confirmedBalance": {
                "amount": "82067.283563540186907089",
                "unit": "ETH"
            }
        }
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "fee": {
                "amount": "0.000005033963697",
                "unit": "ETH"
            },
            "gasLimit": 21000,
            "gasUsed": 21000,
            "hash": "0x8b8dd253844f60a187abe2a5ed620be34c1687c46e99261c1bda19f7e1b9c8ac",
            "inputData": "0x",
            "positionInBlock": 134,
            "recipient": "0xb423b53d9076b325c0248d62ef74b11adc211020",
            "sender": "0x396343362be2a4da1ce0c1c210945346fb82aa49",
            "status": "0x1",
            "timestamp": 1753492931,
            "value": {
                "amount": "0.000034866036303",
                "unit": "ETH"
            },
            "gasPrice": {
                "amount": "239712557",
                "unit": "WEI"
            },
            "minedInBlock": {
                "hash": "0xe368c631c74a82c3043e6d44c4bef6e6139a6501b39c7700c2552554d10e6c3b",
                "height": 23000000
            }
        }
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "limit": 50,
        "offset": 0,
        "total": 100,
        "items": [
            {
                "recipient": "0x742d35cc6634c0532925a3b844bc454e4438f44e",
                "sender": "0x2767ae7e0c205425a7b7f7583c512513c527f482",
                "timestamp": 1786226831,
                "fee": {
                    "amount": "0.0006705845441",
                    "unit": "ETH"
                },
                "tokenData": {
                    "name": "Tether USD",
                    "symbol": "USDT",
                    "contractAddress": "0xdac17f958d2ee523a2206206994597c13d831ec7",
                    "fungibleValues": {
                        "amount": "102817905.785658",
                        "decimals": 6
                    },
                    "standard": "ERC-20"
                },
                "transactionHash": "0xa83bee3d42d2b2235c569ddfba2cffe8ead546c483e8d93fff04cee843b12806",
                "minedInBlock": {
                    "hash": "0xaca043b0df333aa22ec745321d70bd5f35fbdd1b27c869483c864aa278357492",
                    "height": 25681809
                }
            }
        ]
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "bits": 386020669,
            "chainwork": "00000000000000000000000000000000000000013ee38348e7119b5995a32246",
            "difficulty": 127479855693691,
            "merkleRoot": "9974f8196763a5f073efee306cfe2282804b26418473faced9e98a3ac286da59",
            "size": 1762986,
            "version": 576946176,
            "hash": "00000000000000000000b8f8c9ce662619f05211df6671e6433387fe942c828d",
            "height": 962141,
            "previousBlockHash": "000000000000000000018f00f53340b75f082813c942da4aadf2e3d0d73ec5b6",
            "strippedSize": 743228,
            "timestamp": 1786534719,
            "transactionsCount": 4165,
            "versionHex": "22638000",
            "weight": 3992670
        }
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "calculationTimestamp": 1786536060,
            "fromAssetId": "630629f84e66ce0983f2cd4e",
            "fromAssetSymbol": "BTC",
            "rate": "64194.614794354995",
            "toAssetId": "630629694e66ce0983f2cd4b",
            "toAssetSymbol": "USD"
        }
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "fast": "157453250",
            "slow": "136246330",
            "standard": "137697303",
            "unit": "WEI"
        }
    }
}
View Docs

What we support

Mainnets and Testnets

Blockchains
BTC

Bitcoin
ETH

Ethereum
XRP

XRP Ledger
ETC

Ethereum Classic
BCH

Bitcoin Cash
DASH

Dash
LTC

Litecoin
DOGE

Dogecoin
ZEC

Zcash
BSC

BNB Smart Chain
MATIC

Polygon
TRX

TRON
SOL

Solana
AVAX

Avalanche
OPTIMISM

Optimism
kas

Kaspa
View all supported
View all supported

Tether
Chainlink
USD Coin
Aave
View all supported

ERC-20
ERC-721
TRC-20
TRC-721
BEP-20
View all supported

Built for teams like yours

Wallets, exchanges, payment processors and compliance teams run on this API. Find the one closest to what you do and see which products it uses.

View all use cases
Crypto Mining
Crypto Wallet
Crypto PSP
Block Explorer
Crypto Custody
Portfolio Tracking
Crypto Taxes & Accounting
Crypto Exchange

Infrastructure optimized for growth

35+

Networks across the platform

25ms

Avg Processing Time

25,000+ rq/s

Enterprise-ready

100+ TB

of Big Data

See how it works

See it working on your use case

Pick a time for a 30-minute call. We will walk through this API against the chains and volumes you are building for.

Or contact us

Frequently Asked Questions

Pricing

What is Pay As You Go?

Pay As You Go is our pricing model designed to eliminate any restrictions that could be limiting our clients from achieving their goals exactly when they need to. It enables customers on any of our paid plans to continue using our services beyond their plan's credit limit. Once you reach your credit limit, you will be notified by mail, and our Pay As You Go will automatically let you continue using our services without interruption at a slightly higher cost.

How can I pay for the service?

We accept payment methods such as debit and credit cards (Visa, MasterCard) by using our payment provider Stripe. We can also offer you an alternative way to pay for your subscription plan, such as wire transfers, pay with cryptocurrency or PayPal. For more information, contact our business development team at [email protected]

Are payments for Crypto APIs services recurring?

Yes, our service plans are subscription-based, with payments recurring automatically until customers cancel their subscriptions. Please note that upon cancellation, clients are responsible for covering the costs of the current payment term. The subscription will be cancelled at the start of the next payment cycle.

Can I prepay for my subscription for a longer period?

Yes, you can. Please contact our team at [email protected] to discuss the duration, payment methods, and terms.

Do you offer discounts?

We may offer discounts based on your subscription. Discounts are available for larger packages and longer-term subscriptions (yearly). If you believe your subscription qualifies for a discount, please contact our team right away!

What happens when I cancel my plan subscription?

If you decide to cancel your subscription, you will continue to have access to our services until the end of your current payment cycle. After that, your paid services will be discontinued. For example, if you are on a monthly subscription and cancel halfway through the month, you will still have access to paid services for the remaining two weeks. Please note that 30 days after your subscription is canceled, all data associated with your account — including synced addresses, HD wallets and blockchain event subscriptions — will be permanently deleted. Your keys and funds are never held by Crypto APIs, so nothing of yours is affected: the deletion covers the data we store on your behalf.

What is "Throughput"?

Throughput is the metric we use to measure the number of credits that can be spent per second. Each subscription plan includes both soft and hard throughput limits. Soft throughput represents the number of requests per second included in clients chosen subscription plan. Clients can exceed the soft limit if necessary, with slightly higher credit consumption than specified in their chosen subscription plan. However, once the hard throughput limit is reached, clients will have reached the absolute maximum allowed. To increase your hard throughput limit, please upgrade your subscription plan or contact us to create a custom plan that meets your specific needs.

How many credits does an endpoint cost?

You can see the credits cost for each endpoint in our official Documentation. Simply select the endpoint you want information for and the credits cost is displayed at the end of the page.

Do you offer a free plan/trial/demo for Crypto APIs?

We do not offer trial or demo for Crypto APIs products. We do however offer a free subscription instead, which can be used over testing networks.

Can I use more than one Crypto APIs product at once?

Yes, you can use as many of our services as you wish. Our blockchain infrastructure is providing flexibility and is allowing you to continue using us even after you reach your subscription plan limits.

I need more custom settings for my subscription, is it possible?

Yes. We have a Custom option for subscription. To set it up you can directly discuss it with one of our representatives by contacting our team.

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