Blockchain Fees

Get Real-Time Blockchain Fees

Obtain accurate blockchain transaction fee estimates based on the blockchain, transaction type, and priority level. Our tailored and diverse endpoints ensure precise results, providing reliable insights for the efficient planning and execution of blockchain transactions.

Accurate Estimations
Instant response
Multi-network support
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One integration. Infinite possibilities

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

Get Fee Recommendations
GET
Estimate Transaction Smart Fee
GET
Get EIP 1559 Fee Recommendations
GET
Estimate Native Coin Transfer Gas Limit
POST
Estimate Token Transfer Gas Limit
POST
Get Fee Recommendations
GET
View Docs 
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "fast": "0.000025",
            "slow": "0.000010",
            "standard": "0.000015",
            "unit": "BTC"
        }
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "confirmationTarget": 2,
            "feeRate": "0.00001",
            "unit": "BTC"
        }
    }
}
{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "lastBlock": 19269503,
            "baseFeePerGas": {
                "unit": "WEI",
                "value": "45265143502"
            },
            "maxFeePerGas": {
                "fast": "75235090892",
                "slow": "67416761254",
                "standard": "69996407508",
                "unit": "WEI"
            },
            "maxPriorityFeePerGas": {
                "fast": "47085140300",
                "slow": "37331114417",
                "standard": "41987372497",
                "unit": "WEI"
            }
        }
    }
}
Body 
{
    "context": "yourExampleString",
    "data": {
        "item": {
            "additionalData": "yourAdditionalString",
            "amount": "0.002",
            "recipient": "0xc065b539490f81b6c297c37b1925c3be2f190738",
            "sender": "0x6f61e3c2fbb8c8be698bd0907ba6c04b62800fe5"
        }
    }
}

Response

{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "gasLimit": "550000"
        }
    }
}
Body
{
    "context": "yourExampleString",
    "data": {
        "item": {
            "amount": "0.12",
            "contract": "0x092de782a7e1e0a92991ad829a0a33aef3c7545e",
            "contractType": "ERC-20",
            "recipient": "0xc065b539490f81b6c297c37b1925c3be2f190738",
            "sender": "0x6f61e3c2fbb8c8be698bd0907ba6c04b62800fe5"
        }
    }
}

Response

{
    "apiVersion": "12-12-2024",
    "requestId": "601c1710034ed6d407996b30",
    "context": "yourExampleString",
    "data": {
        "item": {
            "gasLimit": "550000"
        }
    }
}
View Docs

What we support

Mainnets and Testnets

Blockchains
BTC

Bitcoin
ETH

Ethereum
ETC

Ethereum Classic
BCH

Bitcoin Cash
DASH

Dash
LTC

Litecoin
DOGE

Dogecoin
ZEC

Zcash
BSC

BNB Smart Chain
MATIC

Polygon
AVAX

Avalanche
ARB

Arbitrum One
OPTIMISM

Optimism
TBA

Base
View all supported
View all supported
View all supported
View all supported

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Infrastructure optimized for growth

30+

Networks Supported

25ms

Avg Processing Time

25,000+ rq/s

Enterprise-ready

100+ TB

of Big Data

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Frequently Asked Questions

Blockchain Fees

Which blockchains does the Crypto APIs blockchain fees API support?

The fee recommendations API covers 20+ blockchains through a single integration — EVM chains (such as Ethereum, BNB Smart Chain, Polygon, Arbitrum, Base, Optimism), UTXO chains (Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, Zcash), plus XRP, Tron, Tezos, Solana and Kaspa. It returns recommended fee rates per chain so you can build and broadcast with an appropriate fee.

Does the blockchain fees API support EIP-1559 gas fee recommendations for Ethereum?

Yes. For EVM chains such as Ethereum, Arbitrum, Base, and Optimism you can retrieve EIP-1559 style fee recommendations, including priority-based estimates. The API returns fee levels by priority (slow, standard, fast) so you can choose the tradeoff between cost and confirmation speed.

Can I estimate Bitcoin and other UTXO transaction fees with Crypto APIs?

Yes. The API provides fee recommendations for six UTXO chains: Bitcoin, Bitcoin Cash, Litecoin, Dogecoin, Dash, and Zcash. It returns recommended fee rates so you can build and broadcast a transaction with an appropriate fee for current network conditions.

Does the Crypto APIs fee API support Solana?

Yes. Fee recommendations are available for Solana, alongside EVM chains, UTXO chains, XRP, Tron, Tezos and Kaspa. The endpoint returns recommended fee levels so you can attach an appropriate fee before broadcasting.

Are testnets covered, or only mainnet fee data?

Both mainnet and testnet are supported for the covered chains. For example, Ethereum offers mainnet and Sepolia, Bitcoin offers mainnet and testnet, and XRP offers mainnet and testnet, so you can estimate fees in a test environment before going to production.

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