How do I build a limit order bot with Swap API?

Start with Python, web3.py, requests. Config chain, tokens, target price. Poll API for quotes, trigger on condition, execute via web3. Full code in this piece.

Does Swap API require an API key for limit order bots?

Nope — zero auth. Free for all 46 EVM chains. Just pass sender address.

Can I run limit order bots on Arbitrum or Base?

Absolutely. Swap chain_id (42161 Arbitrum, 8453 Base), update token addresses. Same polling flow, cheaper gas.

⚙️ DevOps & Platform Eng

DEX Traders Ditch Market Orders: Building Limit Order Bots with Swap API's Secret Sauce

Traders begged for limit orders on DEXs. Swap API delivers the missing piece: dead-simple price polling and calldata for bots. No more FOMO swaps at the peak.

theAIcatchup Apr 08, 2026 4 min read

Python code snippet for a limit order bot polling Swap API on Ethereum

⚡ Key Takeaways

Swap API enables no-key limit order bots on 46 EVM chains, polling real executable prices. 𝕏
DEX volume exploded to $876B Q2 2025, but limits were missing—bots fix that instantly. 𝕏
Democratizes HFT-like precision for retail; predicts DEX surpassing CEX spot by 2027. 𝕏

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theAIcatchup

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#DEX trading bot #EVM chains #Python web3 #Swap API #limit order bot #python defi #swapapi.dev

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