We’re thrilled to announce that Tenderly now fully supports Celo, the Ethereum Layer 2 built for the real world and designed for fast, low-cost transactions worldwide. Developers building on Celo can now use Tenderly’s full-stack infrastructure to access production-grade RPCs, develop, debug, and monitor smart contracts, simulate transactions, and streamline the entire dapp lifecycle, from the first lines of code to mainnet deployment.
This integration comes at a transformative moment in Celo’s journey. Originally launched as an EVM-compatible, mobile-first Layer 1 network, Celo has now evolved into an Ethereum Layer 2 (L2) on the OP Stack, bringing the benefits of rollup scalability and Ethereum alignment to its vibrant, globally diverse ecosystem.
With Tenderly, developers on Celo gain access to the same powerful toolkit already used by top Web3 teams, including leading rollups and DeFi protocols. They now have battle-tested development and production infrastructure along with essential debugging tools to build and scale their projects.
This integration isn’t just about expanding our network support. It’s about supporting a vision – a world where Web3 serves people, communities, and the planet.
Returning home: Celo’s transition to an Ethereum L2
Since its inception, Celo has stood apart. Designed as a mobile-first blockchain for real-world impact, it brought millions of people closer to accessible digital finance. However, like many mission-driven networks, it faced challenges, including siloed liquidity and fragmented tooling. With the advancement of tools like EigenDA for data availability, Silo returns home to Ethereum while maintaining its unique core features, such as fee abstraction (using ERC-20 tokens like USDC and USDT as gas) and sub-cent transactions.
With the launch of the Celo L2 Mainnet, the network has completed its most ambitious upgrade yet – a return to Ethereum. This upgrade unlocks:
- Full EVM compatibility and shared tooling with the broader Ethereum ecosystem
- Interoperability and shared security through the OP Stack
- Access to Ethereum’s liquidity and ecosystem
- Sustainable scalability for mobile-forward, high-volume dapps
Celo has now become a regenerative engine within Ethereum itself.
Tenderly: your full infrastructure and tooling stack for Celo L2
Celo’s mission has always been about more than code. From ReFi protocols and mobile wallets to onchain carbon credits and UBI platforms, it’s a network driven by real-world needs and values.
Tenderly gives developers in the Celo ecosystem the professional-grade tooling needed to build with impact without compromising safety, speed, or quality. You get access to the same high-performance infrastructure and essential tools already trusted by top teams building on the OP Stack and as part of the Superchain ecosystem.
Here's how Tenderly helps you go from prototype to production with confidence.
Virtual TestNets for faster, iterative development
Need to test risky upgrades or multisig flows in a production-like environment? Just spin up a fork of Celo Mainnet or testnet with Virtual TestNets to get a synced, fully customizable replica. You can integrate it into your development workflows to:
- Simulate and test protocol upgrades
- Test governance proposals by manipulating timestamps
- Simulate and test cross-chain messaging
- Run isolated QA environments for your team
Essential debugging tools for quick issue resolution
Whether you’re tracking down a bug or auditing gas usage, you’ll save hours with Tenderly’s industry-recognized Debugging Tools. Use them to slash debugging time, fully understand even the most complex execution flows, and dispatch fixes with confidence using:
- Full stack traces, decoded calldata, and clear revert error messages
- Line-by-line contract traces across multiple internal calls
- Filtering by contract, method, status, and more
- Gas usage breakdown per individual contract call
Transaction simulations for previewing outcomes
Avoid costly mistakes by simulating Celo L2 transactions before sending them onchain. With Tenderly's Transaction Simulator, you can quickly preview the execution of simple transactions or multisig flows, with no real gas or tokens needed.
- Integrate simulations in your dapp or wallet to let users simulate transactions on Celo or Alfajores, giving them confidence and peace of mind
- Quickly validate fixes when debugging transactions by overriding contract code and running a simulation
Tenderly Node RPC for a high-performance infrastructure on Celo
You can use Tenderly’s Node RPC for Celo as the underlying production infrastructure for your DeFi apps on Celo, ensuring high scalability thanks to:
- Multi-region support with smart traffic routing
- 99.99% uptime SLA
- Less than 100ms median latency
- Most accurate gas estimates
- Sub-50 ms average simulation execution time
- Support for custom RPC endpoints & APIs
From mobile apps to relayers to high-frequency bots, your infrastructure has never been this fast—or this reliable.
Real-time monitoring and alerting for proactive risk detection and mitigation
Subscribe to different onchain events on Celo to get alerts instantly when anything critical happens, including token transfers, specific emitted events, and function calls. Use Tenderly Monitoring to set up an automated alerting and response system with:
- Webhooks and integrations with Slack, Discord, email, and other team channels
- Customizable alerting updates across all Tenderly supported networks
- Web3 Actions to trigger custom automations and respond to critical events
Supporting the Isthmus HF
Tenderly also supports Celo’s Isthmus hard fork, a foundational upgrade that laid the groundwork for the true L2 transition and OP Stack support. As detailed in the Isthmus upgrade documentation, the fork enabled critical architectural changes, relevant to the L2 and added to Ethereum with its Pectra activation, such as:
- EIP-7702: Set code transaction
- EIP-2537: BLS12-381 precompiles
- EIP-2935: Block hashes contract predeploy
- EIP-7623: Increase calldata cost
Tenderly’s infrastructure has been upgraded to mirror and support these and other Isthmus included changes, ensuring developers can simulate, monitor, and build against the latest state of the chain.
Get started: build with impact on Celo using Tenderly
With Celo joining the Ethereum L2 family and Optimism’s Superchain vision gaining momentum, the opportunities for builders are multiplying. From scaling climate finance to unlocking DeFi access for billions, the network’s future is bright.
No matter where you are in the journey, from MVP or DAO vote to Celo Mainnet deploy, Tenderly gives you the performance, tools, and observability to ship faster and more confidently.
And with Tenderly as your infrastructure partner, you’re never building alone. Join the revolution with Tenderly and Celo!
