CrossFin

by bubilife1202 · remote · local (npm) · no sign-in to list tools · v1.18.0 · published by GitHub user bubilife1202

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

Final · 1Changes · 3

Compare Registry entry

16 tools: 1 do something that can't be undone, 3 change things and 12 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone1Claude Code: ask: see these tools
Changes things3Claude Code: ask: see these tools
Only reads12Claude Code: allow: see these tools

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http crossfin https://crossfin.dev/api/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

16 tools

Can't be undone 1Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

transferTransfer funds between wallets (KRW).No findings
Why it is in this group
- The name "transfer" says "transfer": a word for a change that another call does not undo.
Description, as the server wrote it
Transfer funds between wallets (KRW). Requires local install.

Changes things 3Creates or changes something that can be changed back.Claude Code: ask

call_paid_serviceCall any CrossFin paid API with automatic x402 USDC payment.No findings
Why it is in this group
- The name "call_paid_service" says "call": a word for a change.
Description, as the server wrote it
Call any CrossFin paid API with automatic x402 USDC payment. Requires local install with EVM_PRIVATE_KEY.
create_walletCreate a wallet in the local CrossFin ledger.No findings
Why it is in this group
- The name "create_wallet" says "create": a word for a change.
Description, as the server wrote it
Create a wallet in the local CrossFin ledger. Requires local install.
set_budgetSet daily spend limit (KRW).No findings
Why it is in this group
- The name "set_budget" says "set": a word for a change.
Description, as the server wrote it
Set daily spend limit (KRW). Requires local install.

Only reads 12Looks things up and changes nothing.Claude Code: allow

compare_exchange_pricesCompare Bithumb KRW prices vs Binance USD prices for tracked coins with transfer-time estimatesNo findings
Why it is in this group
- The name "compare_exchange_prices" says "compare": a word for reading.
Description, as the server wrote it
Compare Bithumb KRW prices vs Binance USD prices for tracked coins with transfer-time estimates
find_optimal_routeFind cheapest/fastest path across 14 exchanges (incl.No findings
Why it is in this group
- The name "find_optimal_route" says "find": a word for reading.
Description, as the server wrote it
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.
get_analyticsCrossFin gateway usage analytics — total calls, top services, recent activityNo findings
Why it is in this group
- The name "get_analytics" says "get": a word for reading.
Description, as the server wrote it
CrossFin gateway usage analytics — total calls, top services, recent activity
get_balanceGet wallet balance (KRW).No findings
Why it is in this group
- The name "get_balance" says "get": a word for reading.
Description, as the server wrote it
Get wallet balance (KRW). Requires local install.
get_guideComplete CrossFin API guide — services, pricing, x402 payment flow, code examplesNo findings
Why it is in this group
- The name "get_guide" says "get": a word for reading.
Description, as the server wrote it
Complete CrossFin API guide — services, pricing, x402 payment flow, code examples
get_kimchi_premiumFree preview of Route Spread — real-time price spread between Korean and global crypto exchanges (top 3 pairs)No findings
Why it is in this group
- The name "get_kimchi_premium" says "get": a word for reading.
Description, as the server wrote it
Free preview of Route Spread — real-time price spread between Korean and global crypto exchanges (top 3 pairs)
get_serviceGet detailed information about a specific service by IDNo findings
Why it is in this group
- The name "get_service" says "get": a word for reading.
Description, as the server wrote it
Get detailed information about a specific service by ID
list_categoriesList all service categories with countsNo findings
Why it is in this group
- The name "list_categories" says "list": a word for reading.
Description, as the server wrote it
List all service categories with counts
list_exchange_feesTrading fees, withdrawal fees, and transfer times for all supported exchanges (Bithumb, Upbit, Coinone, GoPax, bitFlyer, WazirX, bitbank, Indodax, Bitkub, Binance, OKX, Bybit, KuCo…No findings
Why it is in this group
- The name "list_exchange_fees" says "list": a word for reading.
Description, as the server wrote it
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)
list_servicesList services from the CrossFin registry with optional category filterNo findings
Why it is in this group
- The name "list_services" says "list": a word for reading.
Description, as the server wrote it
List services from the CrossFin registry with optional category filter
list_transactionsList transactions.No findings
Why it is in this group
- The name "list_transactions" says "list": a word for reading.
Description, as the server wrote it
List transactions. Requires local install.
search_servicesSearch the CrossFin service registry (184 services) by keywordNo findings
Why it is in this group
- The name "search_services" says "search": a word for reading.
Description, as the server wrote it
Search the CrossFin service registry (184 services) by keyword

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.18.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http crossfin https://crossfin.dev/api/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__crossfin__get_kimchi_premium",
      "mcp__crossfin__list_exchange_fees",
      "mcp__crossfin__compare_exchange_prices",
      "mcp__crossfin__search_services",
      "mcp__crossfin__list_services",
      "mcp__crossfin__get_service",
      "mcp__crossfin__list_categories",
      "mcp__crossfin__get_analytics",
      "mcp__crossfin__get_guide",
      "mcp__crossfin__find_optimal_route",
      "mcp__crossfin__get_balance",
      "mcp__crossfin__list_transactions"
    ],
    "ask": [
      "mcp__crossfin__call_paid_service",
      "mcp__crossfin__create_wallet",
      "mcp__crossfin__transfer",
      "mcp__crossfin__set_budget"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as crossfin. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.bubilife1202/crossfin/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

4 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Compare with other servers for the same product.

Source: MCP Registry · repository. Synced Oct 21, 2026, 18:26 UTC.

For agents: Markdown · JSON · report this listing