0x powers token swaps for Tempo, the payments-first blockchain
0x brings swap infrastructure to the purpose-built payments L1 incubated by Stripe and Paradigm.
March 18, 2026
Powered by 0x
0x brings swap infrastructure to the purpose-built payments L1 incubated by Stripe and Paradigm.
March 18, 2026
Powered by 0x
Tempo is now available to all 0x integrators, bringing total chain coverage to 20 networks. Tempo is a payments-focused L1, incubated by Stripe and Paradigm, which launched on March 18, 2026. Its promise of agentic payment rails and parallel lanes for stablecoin processing has already attracted payment processor Klarna to issue its first stablecoin on the network.
As institutional stablecoin chains go live, they need reliable, production-grade swap infrastructure from Day 1. 0x provides that for Tempo, meaning the same routing engine used by Coinbase, MetaMask, and Phantom, is now supporting the Tempo network through Swap API.
Stablecoin transaction volume hit $33 trillion in 2025. Stripe processed $1.4 trillion in payments the previous year, and Tempo is conviction that a purpose-built blockchain can do stablecoin payments better than general-purpose chains. They're not alone, multiple institutional-grade chains are launching around stablecoin infrastructure, and each one needs reliable swap execution from Day 1.
Payments are the core use case. But moving stablecoins isn't just sending USDC from A to B. A business receiving USDC might need USDT; a trader with pathUSD might want to invest in another asset; an autonomous agent may need to convert its holdings to USDC to pass a payment challenge. As more tokens and DEXs deploy on Tempo, no single pool can guarantee the best price. Liquidity spreads across competing pools and venues, creating the same fragmentation seen on every other chain, but with even tighter margins on payment-focused trades.
Aggregation goes beyond finding a better rate. It keeps prices aligned across pools through arbitrage, routes around low-liquidity or unhealthy venues automatically, and contributes to the overall health of the network's trading ecosystem. Tempo is also built for use cases beyond manual trading: global payouts, remittances, embedded finance, and agentic commerce, where AI agents transact autonomously. Many of these workflows require programmatic swaps between stablecoins, and the Swap API handles that at the infrastructure level.
Low fees and sub-second finality make aggregation even more effective on Tempo. When gas costs fractions of a cent, 0x's routing engine can split trades across more venues without hop costs eating into the savings.
"We're excited to have 0x providing swap infrastructure on Tempo from day one. As stablecoins and trading venues multiply on the network, aggregated liquidity matters for every developer." – Nischay Upadhyayula, GTM, Tempo
Aggregated liquidity across every venue on Tempo. Tempo has a built-in stablecoin DEX at the protocol level. As third-party DEXs come online, 0x will aggregate across all of them. Users get the best available price regardless of where liquidity sits at any given moment.
Smart order routing. 0x’s routing engine splits orders across multiple sources, routes through intermediate tokens when liquidity on direct pairs is thin, and factors gas costs into every quote. On Tempo, where gas is paid in stablecoins and fees sit well under a cent, this means tighter all-in pricing even on smaller trades.
Reliability. 0x maintains 99.91% uptime across all supported chains. Tempo gets the same robust, production-grade infrastructure from Day 1.
Instant integrator access. Every team already integrating Swap API can enable Tempo by updating a single chain parameter. No new contracts or integration logic required.
Tempo is built specifically for stablecoin payments and agentic commerce. The chain is EVM-compatible, but is built with a few notable features that make it stand out from general-purpose networks:
Dedicated payment lanes. Guaranteed blockspace for payments at the protocol level. Payments don't compete with NFT mints or contract deployments, and fees stay low and stable even when network activity spikes.
Built for autonomous payments. Designed for AI agents to hold, spend, and swap stablecoins autonomously, with programmable wallets that support spending limits, automatic top-ups, and policy enforcement.
No volatile gas token. Network gas fees are paid in stablecoins. Users don't need to hold more volatile, native assets just to move money.
Payment memos. Transactions can include metadata compatible with ISO 20022, the universal messaging standard that banks and financial institutions use for cross-border transfers. This lets onchain payments carry the same reference information as traditional wire transfers. Reconcile payments against ERP and accounting systems without custom code.
Protocol-level compliance. Built-in tooling for blocklists, allowlists, and KYC requirements at the chain level.
Deterministic settlement. Blocks finalize in ~0.6 seconds without the possibility for reorgs. Settlement certainty that matches existing financial systems.
Tempo Transactions. A native transaction type (0x76) that supports batching multiple operations into a single atomic transaction, fee sponsorship so apps can cover gas for their users, scheduled payments, and passkey authentication. These are built into the protocol, not bolted on through middleware.
Tempo benefits from not requiring a volatile, native gas token to pay transaction fees. All transaction fees are paid in USD-denominated stablecoins, leading to predictable costs and simpler accounting.
The default gas token is pathUSD. Tempo's Fee AMM automatically converts between supported stablecoins, allowing users to pay gas in whichever USD stablecoin they hold. Tempo supports multiple major USD stablecoins at launch, with more expected as the ecosystem grows.
This differs from other EVM blockchains where owning the native gas token is required to make a transaction. For routing, it means gas cost calculations are predictable without the need to account for price fluctuations.
Fees on Tempo also target lower average costs, delivering per-transaction fees an order of magnitude lower than other popular EVM chains:
Unlike most L2s, where fees can spike during periods of high demand, Tempo's dedicated payment lanes reserve guaranteed blockspace for stablecoin transfers, keeping fees predictable regardless of network congestion.
Fees this low allow 0x’s routing engine to split trades across multiple venues without hop costs eating into the efficiency savings. That makes aggregation even more effective on Tempo than on most other chains.
0x support matters for institutional chains like Tempo because it connects the network with the 500+ teams that rely on 0x for swap execution: the same routing engine that powers swaps inside Coinbase Wallet, MetaMask, Phantom, and Robinhood can now be configured for Tempo with minimal effort.
"Stablecoin payments are going to be the highest-volume use case in crypto, and a growing share of that volume will come from AI agents transacting autonomously. Tempo is purpose-built for that future. We're excited for 0x to be the swap infrastructure powering it.” - Amir Bandeali, Co-Founder, 0x
Tempo integrates directly into your existing Swap API workflow. Use the same endpoints and integration logic by simply updating the target network parameter.
Tempo mainnet uses the Chain ID 4217 with standard EVM tooling support.
# Indicative pricing (pathUSD -> AlphaUSD)
curl "https://api.0x.org/swap/allowance-holder/price?chainId=4217&sellToken=0x20c0000000000000000000000000000000000000&buyToken=0x20c0000000000000000000000000000000000001&sellAmount=1000000" \
-H "0x-api-key: YOUR_API_KEY" \
-H "0x-version: v2"
# Firm quote (to build a transaction)
curl "https://api.0x.org/swap/allowance-holder/quote?chainId=4217&sellToken=0x20c0000000000000000000000000000000000000&buyToken=0x20c0000000000000000000000000000000000001&sellAmount=1000000" \
-H "0x-api-key: YOUR_API_KEY" \
-H "0x-version: v2"Note: Tempo stablecoins use 6-decimal precision (TIP-20 standard), so 1000000 = 1 pathUSD.
Swap API provides a standard step-by-step flow. You’ll get an indicative price, set allowance if needed, fetch a firm quote, then submit the transaction. Works the same on Tempo as everywhere else.
Builders: Tempo is live in Swap API. Toggle it on, validate in production, and ship.
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