n8n-nodes-web3

n8n × web3 is a collection of custom nodes built for n8n, the popular open-source no-code workflow automation tool.

n8n is a fair-code licensed workflow automation platform.

Installation

The community package name is @majus/n8n-nodes-web3.

Follow the installation guide in the n8n community nodes documentation.

Motivation

While n8n is fantastic for automating tasks without needing to code, it doesn’t currently support blockchain integrations.

That’s where we come in! Our project adds seamless web3 functionalities, making it easy for anyone to interact with various blockchain protocols right within n8n.

There are many clear evidences that web3 integration is demanded by no-code developers community:

• Need a node to read onchain data
• Looking for a freelance for web3 script
• How to automate Stripe to Web3 smart contracts?
• External crypto packages not working, others do
• Connecting with Farcaster (social media protocol)
• Looking for a Blockchain-Based Data Node—Or Should I Build One?
• N8n Blockchain/Web3 connectors needed?
• I Created a Solana Node for n8n
• Add ECDSA algorithm to Crypto Node
• Node for Interfacing with JsonRPC

Operations

With n8n × web3, no-code developers can effortlessly add blockchain features to their workflows. Plus, pro web3 developers can quickly prototype their decentralized apps and blockchain solutions without the hassle.

Currently, there are following custom nodes available:

• "Ethereum Transaction builder" — allows to build and sign EVM transactions data.
• "Ethereum Transaction executor" — allows to execute EVM transactions data.
• "Farcaster: Frame builder" — allows to build Farcaster frames standard compliant HTML markup.
• "Farcaster: Transaction builder" — simplifies creating Farcaster frames standard compliant transaction request data.
• "Lilypad Generic Job" — allows to issue generic job to the Lilypad TEE.
• "Lilypad Llama3 Job" — allows to issue Llama3 specific job to the Lilypad TEE.
• "Squid Router" — allows to perform token swaps between different blockchains via the Squid Router API.
• "Flow Mutate" — allows to perform the Flow blockchain write operations via FVM.
• "Flow Query" — allows to perform the Flow blockchain read operations via FVM.

Examples

Ethereum transaction

Allow to transfer an arbitrary amount of ETH from one account to another on EVM blockchain.

Custom nodes used: Ethereum Frame builder, Ethereum Transaction Builder.

How to use:

1. Create a new empty workflow.
2. Import examples/ethereum-tx.json into the workflow.
3. Double-click on each of the Ethereum nodes and choose Ethereum API access credentials.
4. Execute the workflow manually.
5. Double-click on the rightmost node and check the transaction receipt data.

Screencast from 2025-04-03 21-58-55.webm

Farcaster tip

Allow users to make a small tip in ETH to any address via Farcaster.

Custom nodes used: Farcaster Frame builder, Farcaster Transaction Builder.

How to use:

1. Create a new empty workflow.
2. Import examples/farcaster-tip.json into the workflow.
3. Activate the workflow.
4. Copy "Production URL" from the "Webhook" trigger node.
5. Post this link on Farcaster and test it!

Screencast from 2025-04-01 22-10-49.webm

Squid route

Fetch tokens supported by Squid, find out USDT address on BNB chain and USDC address on Arbitrum and get a swap route for these.

Custom nodes used: Squid Router.

How to use:

1. Create a new empty workflow.
2. Import examples/squid-route.json.
3. Double-click on each of the Squid nodes and choose Squid API access credentials (obtain one here).
4. Execute the workflow manually.
5. Double-click on the rightmost node and check the route data.

Screencast from 2025-04-02 15-08-04.webm

Flow balances (FLIX)

Fetch all token balances for a Flow account using FLIX template.

Custom nodes used: Flow Query.

How to use:

1. Create a new empty worflow.
2. Import examples/flow-flix-balances.json.
3. Double-click on the Flow Query node and choose the Flow FVM account credentials, or create one using account address, key index and a private key.
4. Execute the workflow manually.
5. Double-click on the rightmost node and check the account balances.

Screencast from 2025-04-02 15-45-07.webm

Roadmap

We plan for our future custom nodes handle common blockchain tasks like:

• Converting data between JavaScript and Solidity
• Signing data with ECDSA
• Sending raw transactions via JSON RPC
• Automatically generating transaction data from Smart Contract ABIs
• Using standard Smart Contract ABIs without any coding
• Listening for blockchain events to trigger workflows

Down the road, we’d love to expand even more—think support for non-EVM blockchains like Bitcoin and Solana, or adding tools for working directly with Solidity and managing ZK proofs.

Eventually, we aim to have our nodes integrated into n8n’s core, joining the existing ~200 web2 service nodes and making blockchain automation a breeze for everyone.

Resources

• n8n community nodes documentation

Licence

MIT