We're excited to announce that Tenderly now fully supports the Tempo Moderato testnet, the next-generation, purpose-built Layer 1 blockchain designed for real-world payments at scale.
“Andantino testnet is now deprecated with Moderato providing better pre-mainnet support.”
Developers building on Tempo can now leverage Tenderly's full-stack infrastructure to debug payment flows, simulate stablecoin transactions before deployment, develop and test in isolated environments, and access high-performance, production-grade RPCs - with full mainnet support coming in Q1 2026 from day one!
Tempo’s Andantino public testnet opened on December 9, 2025, with Moderato testnet live since January 18th, 2026. It marks a critical step toward launching a payments-optimized Layer-1 where applications can execute fast, low-cost, stablecoin transactions with predictable costs and deterministic settlement.
The blockchain built for payments
Stablecoins have fundamentally changed how value moves across the internet. With over $250 billion in circulation and growing adoption across remittances, payroll, and embedded finance, they've proven their utility. Yet most blockchain infrastructure wasn't designed for them. Existing systems are either fully general-purpose or trading-focused, leaving payment applications to work around limitations rather than leverage purpose-built capabilities.
Tempo changes this paradigm. Incubated by Paradigm and Stripe - two of the most influential forces in crypto and global payments, respectively - Tempo is engineered from the ground up for real-world payment flows. It's not another general-purpose chain adding payment features as an afterthought; it's a blockchain where payments are the primary design consideration.
The network's pedigree speaks for itself. Tempo's design partner program includes category-defining institutions: Anthropic, OpenAI, Shopify, and DoorDash on the tech side; Deutsche Bank, Standard Chartered, Visa, Mastercard, and UBS on the financial side; Mercury, Nubank, Revolut, Brex, Ramp, and Klarna on the fintech side. When companies serving billions of users worldwide help shape a blockchain's architecture, the result is infrastructure that meets actual enterprise requirements rather than theoretical ones.
What makes Tempo different
Tempo introduces several innovations that set it apart from general-purpose blockchains:
- Dedicated payment lanes: Payments have guaranteed blockspace reserved at the protocol level. They don't compete with NFT mints, liquidations, or high-frequency contract calls. Fees stay low and stable - targeting one-tenth of a cent per transaction, even during network congestion. For payment processors, this means no "downtime" from congestion and predictable economics for high-volume flows.
- Stablecoin-native gas: Transaction fees can be paid directly in USD stablecoins. This removes the need for volatile gas tokens and lets payment applications operate entirely in the same currency as their underlying flows. Wallets and custodians no longer need to hold balances of additional cryptoassets just to facilitate stablecoin payments.
- Built-in stable asset DEX: A native decentralized exchange optimized specifically for stablecoins and tokenized deposits. Users can pay fees in any USD stablecoin, while validators can receive fees in their preferred stablecoin, with the protocol automatically handling conversions. This consolidates liquidity and simplifies routing for cross-stablecoin payments.
- Payments metadata: Each transfer can include structured memo fields for invoice numbers, cost centers, or other identifiers. This enables seamless reconciliation with existing ERP, TMS, and accounting systems without custom code—a seemingly simple feature that eliminates enormous operational overhead for enterprises.
- Deterministic settlement: Blocks finalize in approximately 0.5 seconds with no reorganizations. This gives payment operators the settlement certainty they expect from existing financial systems, combined with speed that matches best-in-class blockchains.
What Tenderly brings to Tempo developers
Building payment infrastructure requires exceptional precision. A bug in a payment flow isn't just an inconvenience—it's a failed transaction, a stuck fund, or a broken business process. Tenderly's developer platform is built for exactly this level of rigor, and with the goal of preventing costly mistakes.
Virtual TestNets
Tenderly Virtual TestNets provide isolated, customizable environments for developing payment applications on Tempo. Fork the Tempo testnet at any block, test complex payment flows in isolation, and iterate without affecting live state. For payment applications, this means you can simulate high-volume disbursement scenarios, test cross-stablecoin conversion flows, and validate reconciliation logic before touching production.
Transaction Simulations
Tenderly Simulations let you preview exactly what will happen before a transaction executes. For payment applications where every transaction matters, simulate batch payouts to verify they'll process correctly, preview gas costs across different stablecoins, and catch edge cases before they become production incidents. This is especially valuable on Tempo where payment lanes and stablecoin gas introduce new transaction dynamics to understand.
Debugger
Tenderly Debugger provides line-by-line execution traces for any transaction. When a payment flow fails or behaves unexpectedly, trace through every state change to pinpoint exactly where and why. On a payments-first chain like Tempo, understanding the precise execution path of stablecoin transfers and DEX interactions is essential for building reliable applications.
Alerting & Monitoring
Tenderly Alerting enables real-time monitoring of your payment infrastructure. Set up alerts for failed transactions, unusual gas consumption, or specific contract events. For payment applications, this means catching issues the moment they occur rather than discovering them through user complaints or reconciliation mismatches.
Node RPC
Tenderly Node RPC delivers high-performance, reliable access to the Tempo network with 99.99% uptime. For payment applications where availability is non-negotiable, our globally distributed infrastructure ensures your transactions go through when they need to. With sub-second finality already built into Tempo's architecture, pairing it with low-latency RPC access means your payment flows execute with the speed and reliability that enterprises expect.
What you can build
Tempo's architecture enables payment use cases that are impractical or impossible on general-purpose chains:
- Remittances: Sub-second finality removes settlement uncertainty, while stablecoin gas makes cross-border transfers simple to price and execute 24/7. Partners are already testing corridor payments that settle in seconds with full auditability.
- Global payouts: Dedicated payment lanes guarantee reliability even during market volatility. Whether you're running payroll for a distributed team or disbursing marketplace earnings, Tempo provides a stable, low-cost rail for high-volume disbursements.
- Embedded finance: Smart accounts and protocol-level memos let you embed payment flows inside consumer and enterprise applications without building new ledger infrastructure.
- Microtransactions: With fees targeting one-tenth of a cent, use cases like usage-based APIs, content streaming, and IoT services become commercially viable. The economics that break on other chains work on Tempo.
- Agentic commerce: Programmable accounts and deterministic settlement enable agents to transact with immediate finality and predictable fees—without dependency on volatile token markets.
A growing ecosystem
Tempo isn't building in isolation. Over 40 infrastructure partners have already joined the ecosystem, including Tenderly alongside names like Chainlink, Fireblocks, LayerZero, MetaMask, Phantom, and many more. These partnerships span wallet services, stablecoin orchestration, on/off ramps, developer tooling, compliance, and beyond.
The design partner program continues to expand, with recent additions including Brex, Deel, Gusto, Mastercard, Ramp, and UBS. These aren't speculative partnerships—they're companies actively validating real payment workloads against Tempo's infrastructure.
Get ready for mainnet!
Tempo's testnet is live now, with mainnet support from Tenderly coming from Day 1. The network is fully permissionless—the client is open source under the Apache license, and anyone can deploy contracts, issue tokens, and send transactions. As Tempo moves toward mainnet, they'll onboard validators from design partners, infrastructure partners, and independent operators, progressing toward a fully permissionless validator set.
For developers building payment applications, there's never been a better time to start. The combination of Tempo's purpose-built payment infrastructure and Tenderly's comprehensive developer tooling provides everything needed to build, test, and deploy payment flows that actually work at scale.
Ready to start building on Tempo? Create a Virtual TestNet to fork the Tempo testnet, or explore Tempo's documentation to learn more about the network's capabilities.
To learn more about Tenderly's tools, visit our comprehensive documentation or connect with the Tempo community at tempo.xyz to discover what's possible when payments become a first-class primitive.
