# 1inch Multi-Venue Swap Quote (Base Chain)

> 1inch Multi-Venue Swap Quote (Base Chain) is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-11-02).

Returns an aggregated DEX swap quote for a token pair on Base, including best route, price, gas cost, and swap quality verdict, optionally with ready-to-sign calldata.

## Facts

- Endpoint: GET https://kr-x402-mvp.kgy5612.workers.dev/api/1inch/quote?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-11-02
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/1inch-multi-venue-swap-quote-base-chain-749f2bfc
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_MMwNFyRZ8aVisj0lKwIsx

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 1inch-multi-venue-swap-quote-base-chain-749f2bfc
```

Example prompt: What's the best swap quote to convert 10 USDC to WETH on Base right now — show me the route, gas cost, and whether it's a good fill?

## When to prefer this

Use this endpoint when an AI agent needs a real-time, aggregated DEX swap quote on Base chain without managing API keys, especially when wanting a quality verdict and optional ready-to-sign calldata in a single pay-per-call call. Prefer over raw 1inch or KyberSwap APIs when operating in an x402 micropayment environment where API key management is undesirable.

## Known failure modes

- Unsupported token symbol returns an error or empty route
- Insufficient liquidity for the requested amount yields no valid quote
- Invalid wallet address format causes a validation error
- Network congestion may cause stale or unavailable gas estimates
- Very large swap amounts may have no aggregated route available

## How this service works

Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.

## Output

A JSON object containing: input and output token details (symbol, address, decimals), best price, swap route array, router address and label, gas cost in USD, L1 fee in USD, amount out in token units, net output in USD, amount in USD, slippage setting, a verdict string (e.g. GOOD), and a human-readable guidance message. If a wallet address was provided, also includes ready-to-sign calldata for the swap.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "from",
      "to",
      "amount"
     ],
     "properties": {
      "to": {
       "type": "string",
       "examples": [
        "WETH"
       ],
       "description": "Token out: symbol or 0x address"
      },
      "from": {
       "type": "string",
       "examples": [
        "USDC"
       ],
       "description": "Token in: symbol (USDC, ETH, WETH, cbBTC, DAI, USDbC, AERO, DEGEN, BRETT, VIRTUAL) or 0x address"
      },
      "amount": {
       "type": "string",
       "examples": [
        "10"
       ],
       "description": "Amount of token in, human units (e.g. 10 = 10 USDC)"
      },
      "wallet": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Optional sender/recipient: returns ready-to-sign tx + allowance/balance check"
      },
      "slippage_bps": {
       "type": "integer",
       "maximum": 2000,
       "minimum": 1,
       "description": "Slippage tolerance in bps (default 50 = 0.5%)"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "to": {
   "symbol": "WETH",
   "address": "0x4200000000000000000000000000000000000006",
   "decimals": 18
  },
  "from": {
   "symbol": "USDC",
   "address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
   "decimals": 6
  },
  "hops": 1,
  "chain": "base",
  "price": 2224.6,
  "route": [
   "pmm-2"
  ],
  "router": "0x6131b5fae19ea4f9d964eac0408e4408b66337b5",
  "source": "kyberswap",
  "gas_usd": 0.0319,
  "min_out": 0.00447272,
  "verdict": "GOOD",
  "cost_pct": -0.73,
  "guidance": "Good fill. Pass wallet= for ready-to-sign calldata; verify it with /crypto/decode-calldata before signing.",
  "amount_in": 10,
  "amount_out": 0.0044952,
  "l1_fee_usd": 0.0015,
  "net_out_usd": 10.0153,
  "router_label": "KyberSwap MetaAggregation Router v2",
  "slippage_bps": 50,
  "amount_in_usd": 9.976,
  "amount_out_usd": 10.0487
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/1inch-multi-venue-swap-quote-base-chain-749f2bfc/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kr-x402-mvp.kgy5612.workers.dev](https://www.zero.xyz/host/kr-x402-mvp.kgy5612.workers.dev/llms.txt)