No API keys
Every other swap API requires registration. AI agents can't sign up for accounts. We removed the barrier entirely.
No API keys. No accounts. Returns executable calldata. Built for AI agents and autonomous systems.
$ curl "https://api.swapapi.dev/v1/swap/1? tokenIn=0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE& tokenOut=0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48& amount=1000000000000000000& sender=0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
{ "success": true, "data": { "status": "Successful", "swapPrice": 2500.0, "expectedAmountOut": "2500000000", "tx": { "to": "0x...router", "data": "0x...calldata", "value": "1000000000000000000", } } }
Why this exists
Every other swap API requires registration. AI agents can't sign up for accounts. We removed the barrier entirely.
No OAuth, no headers, no tokens. A raw HTTP GET is all you need. Works from curl, from code, from an autonomous agent.
You don't just get a quote — you get a complete transaction object ready to sign and broadcast. No extra steps.
We make money on positive slippage, not on you. Your quoted price is our commitment.
From the blog
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Supported chains
One GET request. No signup. Calldata in the response.