The most reliable way to build web3 apps

Powerful APIs, SDKs, and tools to build and scale your web3 app with ease.

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The complete
developer platform

Supernode

Meet the web3 engine powering our suite of APIs. Read and write to the blockchain exactly as you want.

Powerful write APIs
for every use case

Account Kit

A complete account solution

No seed phrase, no gas fees. Bring users onchain in seconds using smart accounts.

Code preview

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const provider = new AlchemyProvider(providerConfig).connect(
  (rpcClient) =>
    new LightSmartContractAccount({
      ...accountConfig,
      rpcClient,
    })
);

const { hash } = await provider.sendUserOperation(uo);

Account Abstraction Infrastructure

Smart contract wallet infra built for scale

ERC-4337 Bundler APIs. Gas Manager APIs. Account Abstraction SDK. Up to 35x cheaper than alternatives.

Code preview

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npm init es6 -y
npm install -save-dev typescript
npm install @alchemy/aa-alchemy @alchemy/aa-accounts @alchemy/aa-core viem

Transact

Cheaper, faster, safer transactions

7.9x faster, 100% success rate. Transaction simulation, frontrunning protection, and real-time notifications.

Code preview

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curl --request POST \
     --url https://eth-mainnet.g.alchemy.com/v2/docs-demo \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "method": "alchemy_sendGasOptimizedTransaction"
}
'

Transaction Simulation

Transaction previews for any use case

Transact with confidence. Preview how transactions will behave onchain, and keep your assets safe.

Code preview

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curl --request POST \
     --url https://eth-mainnet.g.alchemy.com/v2/docs-demo \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "alchemy_simulateExecution",
  "params": [
    {
      "from": "0xd8da6bf26964af9d7eed9e03e53415d37aa96045",
      "to": "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48",
      "value": "0x0",
      "data": "0xa9059cbb000000000000000000000000fc43f5f9dd45258b3aff31bdbe6561d97e8b71de00000000000000000000000000000000000000000000000000000000000f4240"
    }
  ]
}
'

Reliable read APIs
for every use case

Subgraphs

Speedy indexing for custom GraphQL APIs

Ship faster with a custom API for your onchain data. Never worry about subgraph downtime or lag again.

Code preview

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cd <SUBGRAPH_DIRECTORY>


graph deploy <SUBGRAPH_NAME> \
  --version-label <VERSION_NAME> \
  --node https://subgraphs.alchemy.com/api/subgraphs/deploy \
  --deploy-key <DEPLOY_KEY>
  --ipfs https://ipfs.satsuma.xyz

NFT API

Build any NFT application

The multichain API to launch, verify, analyze, trade and display NFTs.

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curl --request GET \
     --url 'https://eth-mainnet.g.alchemy.com/nft/v3/docs-demo/getNFTsForOwner?owner=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045&amp;withMetadata=true&amp;pageSize=100' \
     --header 'accept: application/json'

Transfers API

Portfolio management, simplified

100x faster than others. One request to get all historical transaction activity, including internal transfers.

Code preview

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curl --request POST \
     --url https://eth-mainnet.g.alchemy.com/v2/docs-demo \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "alchemy_getAssetTransfers",
  "params": [
    {
      "fromBlock": "0x0",
      "toBlock": "latest",
      "toAddress": "0x5c43B1eD97e52d009611D89b74fA829FE4ac56b1",
      "withMetadata": false,
      "excludeZeroValue": true,
      "maxCount": "0x3e8"
    }
  ]
}
'

Smart Websockets

Blockchain connection for ongoing data

Scalable. Customizable. Easy to set up. Websocket notifications for web3 actions you care about.

Code preview

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// initiate websocket stream first
wscat -c wss://eth-mainnet.g.alchemy.com/v2/demo

// then call subscription 
{"jsonrpc":"2.0","id": 1, "method": "eth_subscribe", "params": ["logs", {"address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48", "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}]}

Webhooks

Real-time data for specific events

Fast, consistent push notifications. Zero missed updates. Massive savings.

Code preview

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curl --request POST \
     --url https://dashboard.alchemy.com/api/create-webhook \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "network": "ETH_MAINNET",
  "webhook_type": "GRAPHQL"
}
'

Token API

Token balances and metadata

The token data your users expect, no token list required. Available on all EVM-supported chains.

Code preview

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curl --request POST \
     --url https://eth-mainnet.g.alchemy.com/v2/docs-demo \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "alchemy_getTokenBalances",
  "params": [
    "0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5",
    "erc20"
  ]
}
'

Custom Webhooks

Real-time data. Any blockchain event.

Infinite data access, precise filter controls.

Code preview

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curl --request POST \
     --url https://dashboard.alchemy.com/api/graphql/variables/variable \
     --header 'content-type: application/json'

Powering web3 growth

$1.5B+trading volume

"Working with Alchemy has helped us save the equivalent of 3 full-time engineers, who otherwise would have to be heads down on infra maintenance, at all times."

Evgeny Yurtaev

CEO & Co-founder

3.5M+wallets integrated

Infrastructure that’s both reliable and scalable, so that we can stay up when our customers need us most - that’s huge for Collab.Land. Alchemy is the GOAT here.

Raymond Feng

CTO and Co-founder

100k+users served

Alchemy's AA infra has played a crucial role in powering CyberAccount, contributing massively to our ability to serve hundreds of thousands of users in real time. Their team's quick response times and attention to detail have been fundamental to our success.

Ryan Li

Co-founder

$1.5B+trading volume

"Working with Alchemy has helped us save the equivalent of 3 full-time engineers, who otherwise would have to be heads down on infra maintenance, at all times."

Evgeny Yurtaev

CEO & Co-founder

3.5M+wallets integrated

Infrastructure that’s both reliable and scalable, so that we can stay up when our customers need us most - that’s huge for Collab.Land. Alchemy is the GOAT here.

Raymond Feng

CTO and Co-founder

100k+users served

Alchemy's AA infra has played a crucial role in powering CyberAccount, contributing massively to our ability to serve hundreds of thousands of users in real time. Their team's quick response times and attention to detail have been fundamental to our success.

Ryan Li

Co-founder