3Route Multichain DEX Swap Quote API

x402

3Route Multichain DEX Swap Quote API is a paid API for AI agents from 3route.agents.bakingbad.dev, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-07).

Returns an optimized multi-DEX swap quote for any token pair on a given EVM chain, including expected output amount, gas estimate, and optional route breakdown.

Price / call$0.001

Seller volume →—

Success—

StatusUnknown

How this service works

3Route is an agent-ready multichain swap API from Baking Bad, a provider of tools for agents. Discover tokens for free, then pay per quote or unsigned swap.

Output

Returns the expected destination token amount, estimated gas cost, optional source/destination token metadata, optional per-DEX route breakdown showing which protocols handle which portion of the swap, and price impact. When isExactOutput is set, also returns the required source input amount.

Example use cases

Best rate for ETH to stablecoin swap

“I want to swap 2 ETH for USDC on Arbitrum — what's the best rate I can get and which DEXes does the route go through?”

Exact output swap for DeFi strategy

“I need exactly 500 DAI on Ethereum mainnet — how much WBTC do I need to sell to get that, and what's the gas estimate?”

Compare swap options excluding a protocol

“Get me a quote to swap 10000 USDC for WETH on Ethereum but exclude Uniswap from the routing — I want to see the price impact too.”

Technical details

Endpoint

GEThttps://3route.agents.bakingbad.dev/api/v6.1/%7BchainId%7D/quote?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a gas-aware, multi-DEX aggregated swap quote on any supported EVM chain via a pay-per-call API with no subscription. Ideal for agents that need real-time pricing with optional route transparency, support for exact-output swaps, and fine-grained control over which DEX protocols are included or excluded.

Side effects

400 if amount is zero or missing required src/dst parameters
400 if protocols list contains no recognized DEX names
400 if referral fee is outside the accepted range
402 Payment Required if the x402 payment header is missing or insufficient
Invalid chain ID returns an error or empty routing result
Illiquid token pairs may return no route or very high price impact

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "gas": 210000,
    "dstAmount": "950000",
    "srcAmount": "1000000000000000000"
  }
}

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