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CrossFin

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io.github.bubilife1202/crossfinv1.18.0

AI agent access to Asian crypto markets. Korean exchange routing and x402 paid APIs.

Crypto & Web3

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Call this server's tools from your browser. Nothing to install.

https://crossfin.dev/api/mcp

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

call_paid_service

Call any CrossFin paid API with automatic x402 USDC payment. Requires local install with EVM_PRIVATE_KEY.

urlstring

paramsobject

serviceIdstring

This tool isn't marked read-only, so it may change something on the server or in an account you connected.

I understand, run it anyway

CrossFin MCP server | mcptry

Tools (16)

call_paid_service

Call any CrossFin paid API with automatic x402 USDC payment. Requires local install with EVM_PRIVATE_KEY.

Argument	Type	Description
url	string
params	object
serviceId	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "url": {
      "type": "string"
    },
    "params": {
      "type": "object",
      "propertyNames": {
        "type": "string"
      },
      "additionalProperties": {
        "type": "string"
      }
    },
    "serviceId": {
      "type": "string"
    }
  }
}

compare_exchange_prices

Compare Bithumb KRW prices vs Binance USD prices for tracked coins with transfer-time estimates

Argument	Type	Description
coin	string	Coin symbol (e.g. BTC, XRP). Omit for all.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "coin": {
      "type": "string",
      "description": "Coin symbol (e.g. BTC, XRP). Omit for all."
    }
  }
}

create_wallet

Create a wallet in the local CrossFin ledger. Requires local install.

Argument	Type	Description
label*	string
initialDepositKrw	number

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "label"
  ],
  "properties": {
    "label": {
      "type": "string"
    },
    "initialDepositKrw": {
      "type": "number"
    }
  }
}

find_optimal_route

Find cheapest/fastest path across 14 exchanges (incl. Coinbase, SUI, APT) using 13 bridge coins. Paid: $0.10 via x402. Requires local install with EVM_PRIVATE_KEY.

Argument	Type	Description
to*	string	Destination (e.g. binance:USDC)
from*	string	Source (e.g. bithumb:KRW)
amount*	number
strategy	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "from",
    "to",
    "amount"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "Destination (e.g. binance:USDC)"
    },
    "from": {
      "type": "string",
      "description": "Source (e.g. bithumb:KRW)"
    },
    "amount": {
      "type": "number"
    },
    "strategy": {
      "enum": [
        "cheapest",
        "fastest",
        "balanced"
      ],
      "type": "string"
    }
  }
}

get_analytics

CrossFin gateway usage analytics — total calls, top services, recent activity

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

get_balance

Get wallet balance (KRW). Requires local install.

Argument	Type	Description
walletId*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "walletId"
  ],
  "properties": {
    "walletId": {
      "type": "string"
    }
  }
}

get_guide

Complete CrossFin API guide — services, pricing, x402 payment flow, code examples

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

get_kimchi_premium

Free preview of Route Spread — real-time price spread between Korean and global crypto exchanges (top 3 pairs)

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

get_service

Get detailed information about a specific service by ID

Argument	Type	Description
serviceId*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "serviceId"
  ],
  "properties": {
    "serviceId": {
      "type": "string"
    }
  }
}

list_categories

List all service categories with counts

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

list_exchange_fees

Trading fees, withdrawal fees, and transfer times for all supported exchanges (Bithumb, Upbit, Coinone, GoPax, bitFlyer, WazirX, bitbank, Indodax, Bitkub, Binance, OKX, Bybit, KuCoin, Coinbase)

No arguments.

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {}
}

list_services

List services from the CrossFin registry with optional category filter

Argument	Type	Description
limit	integer
category	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "integer",
      "maximum": 100,
      "minimum": 1
    },
    "category": {
      "type": "string"
    }
  }
}

list_transactions

List transactions. Requires local install.

Argument	Type	Description
limit	number
walletId	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "limit": {
      "type": "number"
    },
    "walletId": {
      "type": "string"
    }
  }
}

search_services

Search the CrossFin service registry (184 services) by keyword

Argument	Type	Description
query*	string	Search keyword

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "Search keyword"
    }
  }
}

set_budget

Set daily spend limit (KRW). Requires local install.

Argument	Type	Description
dailyLimitKrw*	any

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "dailyLimitKrw"
  ],
  "properties": {
    "dailyLimitKrw": {
      "anyOf": [
        {
          "type": "number"
        },
        {
          "type": "null"
        }
      ]
    }
  }
}

transfer

Transfer funds between wallets (KRW). Requires local install.

Argument	Type	Description
amountKrw*	number
toWalletId*	string
fromWalletId*	string

Input schema (JSON)

{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "fromWalletId",
    "toWalletId",
    "amountKrw"
  ],
  "properties": {
    "amountKrw": {
      "type": "number"
    },
    "toWalletId": {
      "type": "string"
    },
    "fromWalletId": {
      "type": "string"
    }
  }
}