Rockmoon Financial Data

@RockMoon

6 hours ago

Cross-market (US/JP/KR) financial data over MCP — financials, segments, ownership, valuation metrics & prices, every value traceable to its source filing. 18 tools; one API key works for both REST and MCP.

Overview Tools Comments

Overview

Rockmoon — Cross-Market Financial Data for AI Agents (MCP)

English · 中文 · 한국어 · 日本語

Rockmoon is an MCP server that gives your AI agent clean, cross-market (US / Japan / Korea) financial data — financials, segments, ownership, valuation metrics and prices — where every value traces back to its source filing (SEC / EDINET / DART).

One API key works for both REST and MCP. Built MCP-native, so Claude, Cursor, and any MCP client can call it directly.

Endpoint: https://mcp.rockmoon.ai/mcp (Streamable HTTP)
Auth: X-API-Key: <your key> header (also accepts Authorization: Bearer <key>)
Get a key: https://rockmoon.ai
Official MCP registry: ai.rockmoon/financial-data

Why Rockmoon

	Rockmoon	Typical "global" data APIs
Asia depth (JP / KR)	Deep, cleaned, filing-grade	Shallow / auto-aggregated
Provenance	Every value traces to the source filing	Rarely
MCP-native	Yes — agents call it directly	Mostly REST-only
Cross-market comparability	One canonical 80-field schema	Per-vendor mess

Most "global" data is wide but shallow in Asia. Rockmoon is the opposite: deep, clean, comparable Asia + US data your agent can cite.

Quickstart

Add to your MCP client config (Claude Desktop, Cursor, etc.):

{
  "mcpServers": {
    "rockmoon": {
      "type": "http",
      "url": "https://mcp.rockmoon.ai/mcp",
      "headers": { "X-API-Key": "<YOUR_ROCKMOON_API_KEY>" }
    }
  }
}

Then just ask:

"Compare gross margins of AAPL, 7203 (Toyota) and 005930 (Samsung)."
"Screen US semiconductors by ROE."
"Show Toyota's revenue by segment over the last 5 years."

Capabilities — 18 tools

Discovery & profile

Tool	What it does
`search_companies`	Resolve a ticker or name to a company across US / JP / KR
`get_company`	Company profile — name, exchange, industry, GICS sector/group, regulator id

Financials — canonical 80-field schema, traceable to filings

Tool	What it does
`get_financials`	Full statements bundle
`get_income_statement`	Income statement, by period
`get_balance_sheet`	Balance sheet, by period
`get_cash_flow`	Cash-flow statement, by period
`get_segments`	Revenue by product / geography / business segment
`get_segments_trend`	Segment revenue over time

Valuation & screening

Tool	What it does
`get_metrics`	Latest valuation + quality metrics (PE, PB, PS, EV/EBITDA, ROE, ROA, margins, market cap)
`get_metrics_history`	Historical TTM metrics per period
`screen_companies`	Cross-market screener — valuation/quality filters plus GICS sector / industry-group
`compare_metrics`	Side-by-side metrics across tickers (cross-market)
`get_prices`	Price history

Ownership & insiders

Tool	What it does
`get_major_shareholders`	Major shareholders
`get_director_holdings`	Director / officer holdings
`get_insider_trades`	Insider transactions
`get_institutional_holdings`	Institutional holdings
`get_large_holdings_events`	Large-holding change events

Provenance you can cite

Every financial value is backed by raw XBRL provenance with ASC / IFRS / Reg S-X citations, exposed via the REST /v1/trace/ surface — so an agent can show exactly where a number came from. No black-box numbers.

Server Config

{
  "mcpServers": {
    "rockmoon": {
      "type": "http",
      "url": "https://mcp.rockmoon.ai/mcp",
      "headers": {
        "X-API-Key": "<YOUR_ROCKMOON_API_KEY>"
      }
    }
  }
}

Build with ShipAny.