Cross-Chain Swap and Bridge Quote (LI.FI)

lifi/quote

The best single-step route LI.FI finds to swap or bridge a token between two chains: which bridge or DEX it uses, the amount you would receive (and the minimum after slippage), fee and gas costs in USD, the estimated duration and the ready-to-sign transaction request. It is a quote only: nothing is sent or signed. fromAmount is in the token's smallest unit (10000000 = 10 USDC). LI.FI allows only about 35 quotes per hour for all callers combined, so a quote can be refused when busy. LI.FI public API data, passed through and served by Eden Engine; not an official LI.FI product.

activeper callv1

Price

$0.0026 per call

You pay the price shown. If a call turns out to cost more than its quote, you pay the actual price, capped at twice the quote. No monthly minimum. Top-ups start at $0.50.

Data source

LI.FI

Data from the LI.FI public API (li.fi). Served by Eden Engine; not an official LI.FI product.

Use it

Five steps: search, inspect, learn, run, settle. No per-tool setup; your agent reaches this tool through the meta-tools it already has.

Connect once and your AI can find and run this tool, and any other it needs.

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agent

// 1. search: find the tool
omnial_search({ query: "what you need" })

// 2. inspect: price and input schema
omnial_inspect({ tool: "lifi/quote" })

// 3. learn: read the usage guide at runtime
omnial_learn({ tool: "lifi/quote" })

// 4. run: price the exact call first, then run it
omnial_execute({ tool: "lifi/quote", input: { /* see input_schema */ }, dry_run: true })
omnial_execute({ tool: "lifi/quote", input: { /* ... */ } })

// 5. settle: the call is charged when it finishes, nothing to do

Not connected yet? Point your MCP client at https://mcp.eden-engine.com/mcp, then copy a config for your client.

Pricing

Every charge this tool can incur.

Charge	Price
Per call	$0.0026

Updated: Oct 21, 2026

Input and output schemas

Input schema

input_schema.json

{
  "type": "object",
  "required": [
    "fromChain",
    "toChain",
    "fromToken",
    "toToken",
    "fromAmount",
    "fromAddress"
  ],
  "properties": {
    "toChain": {
      "type": "string",
      "pattern": "^[A-Za-z0-9]{1,20}$",
      "description": "Chain id (for example 1 for Ethereum, 137 for Polygon, 10 for Optimism) or LI.FI chain key (eth, pol, opt, arb, bas, sol)."
    },
    "toToken": {
      "type": "string",
      "pattern": "^[A-Za-z0-9]{1,66}$",
      "description": "Destination token symbol or contract address."
    },
    "fromChain": {
      "type": "string",
      "pattern": "^[A-Za-z0-9]{1,20}$",
      "description": "Chain id (for example 1 for Ethereum, 137 for Polygon, 10 for Optimism) or LI.FI chain key (eth, pol, opt, arb, bas, sol)."
    },
    "fromToken": {
      "type": "string",
      "pattern": "^[A-Za-z0-9]{1,66}$",
      "description": "Source token symbol or contract address, for example USDC."
    },
    "fromAmount": {
      "type": "string",
      "pattern": "^[0-9]{1,40}$",
      "description": "Amount to send, in the source token's smallest unit as a whole-number string (USDC has 6 decimals, so 10000000 is 10 USDC)."
    },
    "fromAddress": {
      "type": "string",
      "pattern": "^[A-Za-z0-9]{20,66}$",
      "description": "Sender wallet address; the quote is built for it, nothing is sent. Any valid address works for a price check."
    }
  },
  "additionalProperties": false
}

Output schema

output_schema.json

{
  "type": "object",
  "required": [
    "tool",
    "action",
    "estimate"
  ],
  "properties": {
    "id": {
      "type": "string",
      "description": "Quote id."
    },
    "tool": {
      "type": "string",
      "description": "Key of the bridge or DEX chosen, e.g. across."
    },
    "type": {
      "type": "string"
    },
    "action": {
      "type": "object",
      "properties": {
        "toToken": {
          "type": "object",
          "required": [
            "address",
            "chainId",
            "symbol",
            "decimals"
          ],
          "properties": {
            "name": {
              "type": "string"
            },
            "tags": {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "symbol": {
              "type": "string"
            },
            "address": {
              "type": "string"
            },
            "chainId": {
              "type": "integer"
            },
            "coinKey": {
              "type": "string"
            },
            "logoURI": {
              "type": "string"
            },
            "decimals": {
              "type": "integer"
            },
            "priceUSD": {
              "type": "string",
              "description": "USD price as a string."
            },
            "marketCapUSD": {
              "type": "number"
            },
            "volumeUSD24H": {
              "type": "number"
            },
            "verificationStatus": {
              "type": "string"
            },
            "verificationStatusBreakdown": {
              "type": "array",
              "items": {
                "type": "object",
                "additionalProperties": true
              }
            }
          },
          "additionalProperties": true
        },
        "slippage": {
          "type": "number"
        },
        "fromToken": {
          "type": "object",
          "required": [
            "address",
            "chainId",
            "symbol",
            "decimals"
          ],
          "properties": {
            "name": {
              "type": "string"
            },
            "tags": {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "symbol": {
              "type": "string"
            },
            "address": {
              "type": "string"
            },
            "chainId": {
              "type": "integer"
            },
            "coinKey": {
              "type": "string"
            },
            "logoURI": {
              "type": "string"
            },
            "decimals": {
              "type": "integer"
            },
            "priceUSD": {
              "type": "string",
              "description": "USD price as a string."
            },
            "marketCapUSD": {
              "type": "number"
            },
            "volumeUSD24H": {
              "type": "number"
            },
            "verificationStatus": {
              "type": "string"
            },
            "verificationStatusBreakdown": {
              "type": "array",
              "items": {
                "type": "object",
                "additionalProperties": true
              }
            }
          },
          "additionalProperties": true
        },
        "toAddress": {
          "type": "string"
        },
        "toChainId": {
          "type": "integer"
        },
        "fromAmount": {
          "type": "string"
        },
        "fromAddress": {
          "type": "string"
        },
        "fromChainId": {
          "type": "integer"
        }
      },
      "additionalProperties": true
    },
    "estimate": {
      "type": "object",
      "properties": {
        "feeCosts": {
          "type": "array",
          "items": {
            "type": "object",
            "additionalProperties": true
          }
        },
        "gasCosts": {
          "type": "array",
          "items": {
            "type": "object",
            "additionalProperties": true
          }
        },
        "toAmount": {
          "type": "string",
          "description": "Expected received amount, smallest unit."
        },
        "fromAmount": {
          "type": "string"
        },
        "toAmountMin": {
          "type": "string",
          "description": "Minimum after slippage."
        },
        "toAmountUSD": {
          "type": "string"
        },
        "fromAmountUSD": {
          "type": "string"
        },
        "approvalAddress": {
          "type": "string",
          "description": "Contract to approve for ERC20 spending."
        },
        "executionDuration": {
          "type": "number",
          "description": "Estimated seconds."
        }
      },
      "additionalProperties": true
    },
    "toolDetails": {
      "type": "object",
      "additionalProperties": true
    },
    "includedSteps": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": true
      }
    },
    "transactionRequest": {
      "type": "object",
      "properties": {
        "to": {
          "type": "string"
        },
        "data": {
          "type": "string"
        },
        "from": {
          "type": "string"
        },
        "value": {
          "type": "string"
        },
        "chainId": {
          "type": "integer"
        },
        "gasLimit": {
          "type": "string"
        }
      },
      "description": "Unsigned transaction a wallet would sign; it is not executed.",
      "additionalProperties": true
    },
    "recommendedSlippage": {
      "type": [
        "number",
        "null"
      ]
    }
  },
  "additionalProperties": true
}