# CrossFin

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

- name: io.github.bubilife1202/crossfin
- version: 1.18.0
- connection class: R0 (autonomous)
- trust: 82/100
- quality: 74/100 (needs work)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.bubilife1202%2Fcrossfin
- tools: https://api.protogrid.dev/v1/servers/io.github.bubilife1202%2Fcrossfin/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "crossfin": {
      "type": "http",
      "url": "https://crossfin.dev/api/mcp"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 98
- freshness: 45
- provenance: 80
- drivers: +repository +namespace-matches-repo +reachable +uptime-96% -stale-237d
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 74/100 (needs work)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 71 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- fail `tools.annotations`: no tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: list_transactions (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_exchange_fees (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_analytics (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 1,030 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name

### dependencies: 50 (weight 15)

- warn `deps.known_vulns`: 1 advisory of lower severity or without a published fix: GHSA-5r4p-p66f-jhc7 in hono@4.13.9 (indirect, fixed in 4.13.11)
- fail `deps.mcp_sdk_version`: @modelcontextprotocol/sdk 1.30.1 has 3 known advisories (GHSA-22jm-h49p-29qw, GHSA-6prh-2h8m-c8cw, GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.32.0 or later
- pass `deps.resolvable`: crossfin-mcp@1.18.0 resolved: 116 packages

- tools: 16, about 1,030 tokens to load them all
- tool set hash: 7c5048084e876fe329d8b80457fa1ed2
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.bubilife1202/crossfin.svg)](https://protogrid.dev/servers/io.github.bubilife1202/crossfin)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Dependencies

- npm crossfin-mcp@1.18.0: resolved, 115 dependencies, MCP SDK @modelcontextprotocol/sdk 1.30.1
  - GHSA-22jm-h49p-29qw (high) in `` @modelcontextprotocol/sdk@1.30.1 ``, direct, fixed in `` 1.32.0 ``, advisory summary: "MCP TypeScript SDK: Experimental tasks were not tied to the session that created them" https://osv.dev/vulnerability/GHSA-22jm-h49p-29qw
  - GHSA-6qxp-vccf-f47h (high) in `` @modelcontextprotocol/sdk@1.30.1 ``, direct, fixed in `` 1.31.0 ``, advisory summary: "MCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server" https://osv.dev/vulnerability/GHSA-6qxp-vccf-f47h
  - GHSA-6prh-2h8m-c8cw (moderate) in `` @modelcontextprotocol/sdk@1.30.1 ``, direct, fixed in `` 1.32.0 ``, advisory summary: "MCP TypeScript client SDK: HTTP client transports and OAuth requests followed cross-origin redirects and re-sent custom headers and request bodies" https://osv.dev/vulnerability/GHSA-6prh-2h8m-c8cw
  - GHSA-5r4p-p66f-jhc7 (moderate) in `` hono@4.13.9 ``, indirect, fixed in `` 4.13.11 ``, advisory summary: "Hono: \`serveStatic\` decodes the request path a second time, leading to bypass of middleware on static paths" https://osv.dev/vulnerability/GHSA-5r4p-p66f-jhc7

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

- https://crossfin.dev/api/mcp (streamable-http, auth none, reachable true, uptime30d 0.95652175)

## Packages

- npm crossfin-mcp@1.18.0 secrets: EVM_PRIVATE_KEY

## Tools (16)

- `call_paid_service`: Call any CrossFin paid API with automatic x402 USDC payment. Requires local install with EVM_PRIVATE_KEY.
- `compare_exchange_prices`: Compare Bithumb KRW prices vs Binance USD prices for tracked coins with transfer-time estimates
- `create_wallet`: Create a wallet in the local CrossFin ledger. Requires local install.
- `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.
- `get_analytics`: CrossFin gateway usage analytics — total calls, top services, recent activity
- `get_balance`: Get wallet balance (KRW). Requires local install.
- `get_guide`: Complete CrossFin API guide — services, pricing, x402 payment flow, code examples
- `get_kimchi_premium`: Free preview of Route Spread — real-time price spread between Korean and global crypto exchanges (top 3 pairs)
- `get_service`: Get detailed information about a specific service by ID
- `list_categories`: List all service categories with counts
- `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)
- `list_services`: List services from the CrossFin registry with optional category filter
- `list_transactions`: List transactions. Requires local install.
- `search_services`: Search the CrossFin service registry (184 services) by keyword
- `set_budget`: Set daily spend limit (KRW). Requires local install.
- `transfer`: Transfer funds between wallets (KRW). Requires local install.