0x Protocol Swap API

Cryptocurrency & Blockchain · Financial Data & Markets

Open-source decentralized exchange aggregator and multi-chain crypto token swap routing API

0x Protocol Swap API Highlights

0x Protocol Swap API is best for web3 wallets, crypto fintechs, DeFi protocols, and decentralized exchange developers

Last Verified

Authentication

API Key (0x-api-key header)

Rate Limit

Free tier: standard rate limits; paid plans for high-frequency algorithmic trading

Sandbox Mode
✓ Available
Webhooks
Not verified yet
Supported Regions
NigeriaNigeriaGhanaGhanaKenyaKenya
Alternative African Company to

The 0x Protocol Swap API is an open-source decentralized exchange (DEX) aggregator and smart order routing protocol. It continuously scans and aggregates token liquidity across Uniswap, Curve, Balancer, SushiSwap, and multi-chain liquidity pools on Ethereum, BNB Chain, Polygon, Arbitrum, Optimism, Avalanche, and Base.

In Nigeria's Web3 and DeFi developer ecosystem, 0x powers non-custodial crypto wallets, stablecoin payment gateways, and remittance apps, ensuring users get the best exchange rates and minimal slippage on token swaps.

0x Protocol Swap API Core Features & Capabilities

FeatureStatusDescription & Capabilities
Multi-DEX Liquidity Aggregation✓ SupportedProvides native Multi-DEX Liquidity Aggregation capabilities integrated within the API.
Token Price & Swap Quote Endpoints✓ SupportedProvides native Token Price & Swap Quote Endpoints capabilities integrated within the API.
Multi-Chain EVM Support (10+ Networks)✓ SupportedProvides native Multi-Chain EVM Support (10+ Networks) capabilities integrated within the API.
Limit Order Protocol✓ SupportedProvides native Limit Order Protocol capabilities integrated within the API.
RFQM Private Market Maker Liquidity✓ SupportedProvides native RFQM Private Market Maker Liquidity capabilities integrated within the API.
Custodial Fiat On-Ramp✗ Not SupportedCustodial Fiat On-Ramp is currently not supported by 0x Protocol Swap API.
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API Pricing Model
  • Free developer tier with full access to Swap, Price, and Quote APIs
  • Enterprise plans available for commercial institutions

Required Access Documents for 0x Protocol Swap API

  • 0x Developer Portal AccountRequired
    Sign up at 0x.org to generate your free API key

Different 0x Protocol Swap API use cases

  • Non-Custodial Mobile Wallet Swaps:Allow mobile crypto wallet users to convert USDT to ETH or local tokens directly in-app.
  • Cross-Border Stablecoin Routing:Find optimal liquidity paths for stablecoin conversions powering remittance corridors.
  • DeFi Automated Rebalancing:Build automated portfolio rebalancing bots across decentralized crypto assets.

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