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Blockchain

Discover powerful Blockchain APIs and developer tools for free on Free API Hub. From cryptocurrency data to Web3 utilities and smart contract interactions, these APIs are perfect for building decentralized applications securely and efficiently.

10 APIs 0 AI Models 10 Total

10 resources

Blockchainopen

Helium Blockchain API

1 endpoints

75 popularity

The Helium Blockchain API offers developers seamless access to IoT blockcha...

Authentication

Required

Base URL

https://api.helium.io/v1

rewardscoverage-mapsolana+5

BlockchainPublic and Private

MEXC Exchange API

1 endpoints

75 popularity

The MEXC Exchange API offers free access to real-time cryptocurrency market...

Authentication

Required

Base URL

https://api.mexc.com

ohlcvexchangemexc+5

BlockchainPublic

Chainpoint API

1 endpoints

65 popularity

The Chainpoint API offers developers free access to blockchain proofing cap...

Authentication

Required

Base URL

https://anchor.chainpoint.org

merkledata-integritytimestamp+5

Blockchainpublic

Bitquery API

1 endpoints

75 popularity

The Bitquery API offers developers comprehensive access to on-chain data fr...

Authentication

Required

Base URL

https://streaming.bitquery.io/graphql

multi-chaindefistreaming+6

BlockchainPublic

CoinGecko NFT API

1 endpoints

75 popularity

The CoinGecko NFT API offers developers free access to extensive NFT market...

Authentication

Required

Base URL

https://api.coingecko.com/api/v3

market-capprice-datacoingecko+5

Blockchainpublic

Alchemy NFT API

2 endpoints

75 popularity

The Alchemy NFT API offers developers free access to NFT metadata, ownershi...

Authentication

Required

Base URL

https://eth-mainnet.g.alchemy.com/nft/v3

token-gatingnft-metadataalchemy+5

BlockchainPublic

Web3.js Ethereum API

1 endpoints

90 popularity

Web3.js is an open-source library that allows developers to interact seamle...

Authentication

Required

Base URL

https://github.com/web3/web3.js

defidappsmart-contracts+6

BlockchainPublic

Covalent API

1 endpoints

85 popularity

The Covalent API provides developers with free access to blockchain data ac...

Authentication

Required

Base URL

https://api.covalenthq.com/v1

polygonwalletmulti-chain+6

BlockchainPublic

Etherscan API

1 endpoints

85 popularity

The Etherscan API offers developers free access to Ethereum blockchain data...

Authentication

Required

Base URL

https://api.etherscan.io/api

erc20transactionswallet+5

Blockchainpublic

The Graph API

1 endpoints

85 popularity

The Graph API offers free access to query indexed blockchain data via Graph...

Authentication

Required

Base URL

https://api.thegraph.com/subgraphs/name

indexingsubgraphpolygon+6