n8n-nodes-stacks

[Velocity BPA Licensing Notice]

This n8n node is licensed under the Business Source License 1.1 (BSL 1.1).

Use of this node by for-profit organizations in production environments requires a commercial license from Velocity BPA.

For licensing information, visit https://velobpa.com/licensing or contact licensing@velobpa.com.

A comprehensive n8n community node for Stacks blockchain providing 19 resources and 100+ operations for STX transfers, smart contracts, NFTs, sBTC, BNS, stacking, and Bitcoin Ordinals integration.

Features

• Account Management: Query balances, transactions, assets, and nonces
• Transaction Handling: Broadcast, track, and monitor transactions
• Smart Contracts: Deploy, interact with, and query Clarity smart contracts
• NFT Operations: Track holdings, transfers, and minting activity
• sBTC Integration: Monitor sBTC balances and operations
• BNS (Bitcoin Naming System): Resolve names, manage namespaces
• Stacking Rewards: Monitor PoX cycles and stacking status
• Bitcoin Ordinals: Query inscriptions and BRC-20 tokens
• Trigger Node: Automated workflows for blockchain events

Installation

Community Nodes (Recommended)

1. Open n8n
2. Go to Settings → Community Nodes
3. Select Install
4. Enter n8n-nodes-stacks
5. Accept the risks and install

Manual Installation

# Navigate to your n8n installation directory
cd ~/.n8n

# Create custom nodes directory if it doesn't exist
mkdir -p custom

# Clone the repository
git clone https://github.com/Velocity-BPA/n8n-nodes-stacks.git custom/n8n-nodes-stacks

# Install dependencies and build
cd custom/n8n-nodes-stacks
pnpm install
pnpm run build

# Restart n8n

Development Installation

# Clone the repository
git clone https://github.com/Velocity-BPA/n8n-nodes-stacks.git
cd n8n-nodes-stacks

# Install dependencies
pnpm install

# Build
pnpm run build

# Link to n8n custom directory
mkdir -p ~/.n8n/custom
ln -s $(pwd) ~/.n8n/custom/n8n-nodes-stacks

# Restart n8n

Credentials Setup

Hiro API Credentials

Field	Description	Required
API Endpoint	Network selection (Mainnet/Testnet/Custom)	Yes
Custom Endpoint	Custom API URL (if using Custom endpoint)	No
API Key	Hiro API key for higher rate limits	No

Stacks Network Credentials

Field	Description	Required
Network	Mainnet, Testnet, or Custom	Yes
Node URL	Stacks node URL	No
Private Key	Account private key for signing	No
Fee Multiplier	Transaction fee multiplier	No

Bitcoin Connection Credentials

Field	Description	Required
Provider	Blockstream, Mempool.space, or Custom	Yes
Custom URL	Custom Bitcoin API URL	No

Resources & Operations

Account

• Get Balance
• Get STX Balance
• Get Transactions
• Get Assets
• Get Nonce
• Get Mempool Transactions

Transaction

• Get Transaction
• Get Raw Transaction
• List Transactions
• Broadcast Transaction
• Get Mempool Transactions

Block

• Get Block
• Get Block by Height
• List Blocks
• Get Block Transactions
• Get Latest Block

Contract

• Get Contract Info
• Get Contract Source
• Get Contract Interface
• Get Contract Events
• Call Read-Only Function
• Get Map Entry
• Get Deployed Contracts

NFT

• Get Holdings
• Get History
• Get Mints

Stacking

• Get PoX Info
• Get PoX Cycle
• List PoX Cycles
• Get Stacker Info

sBTC

• Get Balance

BNS (Names)

• Get Names by Address
• Get Name Info
• Get Zone File
• Get Name Price
• List Namespaces
• Get Namespace Info

Ordinals

• Get Inscription
• List Inscriptions
• Get Inscription Transfers
• Get Satoshi Info
• List BRC-20 Tokens
• Get BRC-20 Token

Token Transfer

• Get Balance
• Get Transfer History
• Estimate Fee

Fungible Token

• Get Holdings
• Get Metadata
• Get Holders

Burn Block

• Get Burn Block
• List Burn Blocks

Microblock

• Get Microblock
• List Microblocks
• Get Unanchored Transactions

Mempool

• Get Stats
• Get Pending
• Get Dropped

Clarity

• Encode Value
• Decode Value

Search

• Search (blocks, transactions, contracts, addresses)

Info

• Get Core API Info
• Get Network Status
• Get STX Supply
• Get Fee Rate
• Get PoX Info

Rosetta

• Get Network List
• Get Network Status
• Get Network Options
• Get Block
• Get Account Balance

Utility

• Validate Address
• Parse Contract ID
• Format STX Amount

Trigger Node

The Stacks Trigger node enables automated workflows based on blockchain events:

Event	Description
New Block	Triggers when a new block is confirmed
New Microblock	Triggers when a new microblock is created
Address Transaction	Triggers when an address receives a transaction
Contract Event	Triggers on smart contract events
STX Transfer	Triggers on STX transfers to/from an address
Mempool Activity	Triggers on new mempool transactions
Stacking Event	Triggers on stacking cycle changes

Usage Examples

Get Account Balance

// Using Stacks node with Account resource
{
  "resource": "account",
  "operation": "getBalance",
  "address": "SP2J6ZY48GV1EZ5V2V5RB9MP66SW86PYKKNRV9EJ7"
}

Call Read-Only Contract Function

// Using Stacks node with Contract resource
{
  "resource": "contract",
  "operation": "callReadOnly",
  "contractId": "SP2J6ZY48GV1EZ5V2V5RB9MP66SW86PYKKNRV9EJ7.my-contract",
  "functionName": "get-value",
  "senderAddress": "SP2J6ZY48GV1EZ5V2V5RB9MP66SW86PYKKNRV9EJ7",
  "arguments": []
}

Query NFT Holdings

// Using Stacks node with NFT resource
{
  "resource": "nft",
  "operation": "getHoldings",
  "address": "SP2J6ZY48GV1EZ5V2V5RB9MP66SW86PYKKNRV9EJ7"
}

Stacks Concepts

Addresses

• Mainnet: Start with SP or SM
• Testnet: Start with ST or SN

Contract IDs

Format: <address>.<contract-name>
Example: SP2J6ZY48GV1EZ5V2V5RB9MP66SW86PYKKNRV9EJ7.my-contract

Clarity Types

• int: Signed 128-bit integer
• uint: Unsigned 128-bit integer
• bool: Boolean (true/false)
• principal: Stacks address or contract identifier
• buffer: Byte buffer
• string-ascii: ASCII string
• string-utf8: UTF-8 string

STX Units

• 1 STX = 1,000,000 microSTX
• All amounts in the API are in microSTX

Networks

Network	API URL	Description
Mainnet	https://api.mainnet.hiro.so	Production network
Testnet	https://api.testnet.hiro.so	Test network
Devnet	http://localhost:3999	Local development

Error Handling

The node provides detailed error messages for common issues:

• 400 Bad Request: Invalid parameters or malformed request
• 401 Unauthorized: Invalid or missing API key
• 404 Not Found: Resource doesn't exist
• 429 Too Many Requests: Rate limit exceeded
• 500 Internal Server Error: API service error

Security Best Practices

1. API Keys: Store API keys as n8n credentials, never in workflow data
2. Private Keys: Only use private keys in secure, production environments
3. Rate Limits: Use API keys for higher rate limits in production
4. Testnet First: Test workflows on testnet before deploying to mainnet

Development

# Run linting
pnpm run lint

# Fix linting issues
pnpm run lint:fix

# Run tests
pnpm test

# Run tests with coverage
pnpm run test:coverage

# Build
pnpm run build

Author

Velocity BPA

• Website: velobpa.com
• GitHub: Velocity-BPA

Licensing

This n8n community node is licensed under the Business Source License 1.1.

Free Use

Permitted for personal, educational, research, and internal business use.

Commercial Use

Use of this node within any SaaS, PaaS, hosted platform, managed service,
or paid automation offering requires a commercial license.

For licensing inquiries:
licensing@velobpa.com

See LICENSE, COMMERCIAL_LICENSE.md, and LICENSING_FAQ.md for details.

Contributing

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Commit changes: git commit -m 'Add amazing feature'
4. Push to branch: git push origin feature/amazing-feature
5. Open a Pull Request

Support

• Issues: GitHub Issues
• Documentation: Stacks API Docs
• Community: n8n Community Forum

Acknowledgments

• Hiro for the Stacks API
• Stacks Foundation for the Stacks blockchain
• n8n for the workflow automation platform