

Chainrel: Real-Time Blockchain Event Notifications
Chainrel delivers instant blockchain event notifications straight to Slack, Discord, or your webhooks, letting backend teams integrate on-chain data without touching smart contract code.
Overview
Chainrel is a notification layer built to bridge the gap between blockchain activity and traditional backend systems. Rather than forcing engineers to write custom listeners in Solidity or learn chain-specific tooling, Chainrel monitors on-chain events and pushes real-time alerts to the channels your team already uses, including webhooks, Slack, and Discord. This makes it possible to react to wallet transfers, contract calls, and cross-chain activity the moment they happen, without maintaining blockchain infrastructure in-house.
The platform is built with flexibility and safety in mind. You can import events from a verified contract address, upload an ABI file, or simply select from predefined ERC-20, ERC-721, and ERC-1155 standards to get started quickly. For teams managing factory-deployed contracts, Chainrel simplifies tracking across dynamically created addresses. Security-conscious users can also configure custom block confirmation thresholds, ensuring notifications only fire once a transaction reaches the desired level of finality.
Whether you're building DeFi protocols, web3 games, or enterprise blockchain integrations, Chainrel acts as the glue between smart contracts and your application logic, abstracting away blockchain complexity so backend teams can focus on building features instead of parsing raw chain data.
Capabilities & Features
- Blockchain event notification
- Webhook
- Backend integration
- Real-time alerts
- Smart contract monitoring
- EVM chains
- Web3
- Slack integration
- Discord integration
Core Features
- Real-time blockchain event notifications
- Multi-channel delivery via Webhook URL, Slack, and Discord
- Flexible event imports using contract address, ABI file, or ERC standards
- Adjustable block confirmation values for transaction security
- Simplified factory contract management
- Structured data parsing for arrays, strings, integers, and structs
Use Cases
- Monitoring wallet transfers in real time
- Tracking cross-chain event activity
- Watching DeFi order and trade events
- Powering live event tracking for web3 games
- Integrating blockchain triggers into existing backend workflows
Best For
- Blockchain developers
- Web3 game developers
- DeFi project teams
- Backend engineers
- Enterprises integrating blockchain technology
Pros
- •No need to learn blockchain-specific programming languages to consume on-chain events
- •Supports multiple popular EVM chains including Ethereum, Polygon, BSC, and Avalanche
- •Flexible event setup via ABI, contract address, or standard ERC templates
- •Configurable block confirmations add an extra layer of transaction safety
- •Simplifies monitoring of factory-deployed contracts and multi-contract setups
Cons
- •Free tier is limited to a single webhook and modest notification volume
- •Optimism and Linea support are not yet available
- •Notifications pause if you exceed your plan's monthly limit unless you purchase extra credits
- •Current channel integrations are limited to webhooks, Slack, and Discord, with Telegram and Zapier still pending
How to Use
1. Sign up for a Chainrel account. 2. Import the events you want to track using a contract address, an ABI file, or predefined ERC-20/721/1155 standards. 3. Set your preferred block confirmation value to balance speed and security. 4. Choose where notifications should be delivered: a webhook URL, Slack channel, or Discord channel. 5. Save your configuration and start receiving real-time alerts as matching blockchain events occur.
Frequently Asked Questions
Connect & Contact
Pricing
Chainrel offers a free Starter plan with 500 notifications a month and one webhook, while the Growth plan at $19.90+VAT/month (billed annually) unlocks 100,000 notifications, 10 webhooks, and a 'listen to all contracts' option for larger teams.
Pricing data is provided as a summary. Visit the vendor website for full tier details.