# edinet-mcp
EDINET XBRL parsing library and MCP server for Japanese financial data.
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📝 [日本語チュートリアル: Claude に聞くだけで上場企業の決算がわかる (Zenn)](https://zenn.dev/ajtgjmdjp/articles/edinet-mcp-claude-desktop)
Part of the [Japan Finance Data Stack](https://github.com/ajtgjmdjp/awesome-japan-finance-data): **edinet-mcp** (securities filings) | [tdnet-disclosure-mcp](https://github.com/ajtgjmdjp/tdnet-disclosure-mcp) (timely disclosures) | [estat-mcp](https://github.com/ajtgjmdjp/estat-mcp) (government statistics) | [boj-mcp](https://github.com/ajtgjmdjp/boj-mcp) (Bank of Japan) | [stockprice-mcp](https://github.com/ajtgjmdjp/stockprice-mcp) (stock prices & FX)
## What is this?
**edinet-mcp** provides programmatic access to Japan's [EDINET](https://disclosure.edinet-fsa.go.jp/) financial disclosure system. It normalizes XBRL filings across accounting standards (J-GAAP / IFRS / US-GAAP) into canonical Japanese labels and exposes them as an [MCP](https://modelcontextprotocol.io/) server for AI assistants.
- Search 5,000+ listed Japanese companies
- Retrieve annual/quarterly financial reports (有価証券報告書, 四半期報告書)
- **Automatic normalization**: `stmt["売上高"]` works regardless of accounting standard
- Financial metrics (ROE, ROA, profit margins) and year-over-year comparisons
- Parse XBRL into Polars/pandas DataFrames (BS, PL, CF)
- **Multi-company screening**: Compare financial metrics across up to 20 companies
- **Cross-period diff (xbrl-diff)**: Compare financial statements across periods with change amounts (増減額) and growth rates (増減率)
- MCP server with 9 tools for Claude Desktop and other AI tools
## Quick Start
### Installation
```bash
pip install edinet-mcp
# or
uv add edinet-mcp
# or with Docker
docker run -e EDINET_API_KEY=your_key ghcr.io/ajtgjmdjp/edinet-mcp serve
```
### Get an API Key
Register (free) at [EDINET](https://disclosure2dl.edinet-fsa.go.jp/guide/static/disclosure/WZEK0110.html) and set:
```bash
export EDINET_API_KEY=your_key_here
```
### 30-Second Example
```python
import asyncio
from edinet_mcp import EdinetClient
async def main():
async with EdinetClient() as client:
# Search for Toyota
companies = await client.search_companies("トヨタ")
print(companies[0].name, companies[0].edinet_code)
# トヨタ自動車株式会社 E02144
# Get normalized financial statements
stmt = await client.get_financial_statements("E02144", period="2025")
# Dict-like access — works for J-GAAP, IFRS, and US-GAAP
revenue = stmt.income_statement["売上高"]
print(revenue) # {"当期": 45095325000000, "前期": 37154298000000}
# See all available line items
print(stmt.income_statement.labels)
# ["売上高", "売上原価", "売上総利益", "営業利益", ...]
# Export as DataFrame
print(stmt.income_statement.to_polars())
asyncio.run(main())
```
### Financial Metrics
```python
import asyncio
from edinet_mcp import EdinetClient, calculate_metrics
async def main():
async with EdinetClient() as client:
stmt = await client.get_financial_statements("E02144", period="2025")
metrics = calculate_metrics(stmt)
print(metrics["profitability"])
# {"売上総利益率": "25.30%", "営業利益率": "11.87%", "ROE": "12.50%", ...}
asyncio.run(main())
```
### Multi-Company Screening
```python
import asyncio
from edinet_mcp import EdinetClient, screen_companies
async def main():
async with EdinetClient() as client:
result = await screen_companies(
client,
["E02144", "E01777", "E01967"], # Toyota, Sony, Keyence
period="2025",
sort_by="営業利益率", # Sort by operating margin
)
for r in result["results"]:
print(f"{r['company_name']}: {r['profitability']['営業利益率']}")
# 株式会社キーエンス: 51.91%
# ソニーグループ株式会社: 11.69%
# トヨタ自動車株式会社: 9.98%
asyncio.run(main())
```
### Cross-Period Diff
```python
import asyncio
from edinet_mcp import EdinetClient, diff_statements
async def main():
async with EdinetClient() as client:
result = await diff_statements(
client, "E02144",
period1="2024", period2="2025",
)
for d in result["diffs"][:5]:
print(f"{d['科目']}: {d['増減額']:+,.0f} ({d['増減率']})")
# 売上高: +7,941,027,000,000 (+21.38%)
# 営業利益: +1,204,832,000,000 (+28.44%)
# ...
asyncio.run(main())
```
## MCP Server
Add to your AI tool's MCP config:
Claude Desktop (~/Library/Application Support/Claude/claude_desktop_config.json)
```json
{
"mcpServers": {
"edinet": {
"command": "uvx",
"args": ["edinet-mcp", "serve"],
"env": {
"EDINET_API_KEY": "your_key_here"
}
}
}
}
```
Cursor (~/.cursor/mcp.json)
```json
{
"mcpServers": {
"edinet": {
"command": "uvx",
"args": ["edinet-mcp", "serve"],
"env": {
"EDINET_API_KEY": "your_key_here"
}
}
}
}
```
Claude Code
```bash
claude mcp add edinet -- uvx edinet-mcp serve
# Then set EDINET_API_KEY in your environment
```
Then ask your AI: "トヨタの最新の営業利益を教えて"
### Available MCP Tools
| Tool | Description |
|------|-------------|
| `search_companies` | 企業名・証券コード・EDINETコードで検索 |
| `get_filings` | 指定期間の開示書類一覧を取得 |
| `get_financial_statements` | 正規化された財務諸表 (BS/PL/CF) を取得 |
| `get_financial_metrics` | ROE・ROA・利益率等の財務指標を計算 |
| `compare_financial_periods` | 前年比較（増減額・増減率） |
| `screen_companies` | 複数企業の財務指標を一括比較（最大20社） |
| `list_available_labels` | 取得可能な財務科目の一覧 |
| `get_company_info` | 企業の詳細情報を取得 |
| `diff_financial_statements` | 2期間の財務諸表を比較（増減額・増減率） |
> **Note**: The `period` parameter is the **filing year**, not the fiscal year. Japanese companies with a March fiscal year-end file annual reports in June of the following year (e.g., FY2024 → filed 2025 → `period="2025"`).
## CLI
```bash
# Search companies
edinet-mcp search トヨタ
# Fetch income statement
edinet-mcp statements -c E02144 -p 2024
# Screen multiple companies
edinet-mcp screen E02144 E01777 E02529 --sort-by ROE
# Compare across periods (xbrl-diff)
edinet-mcp diff -c E02144 -p1 2023 -p2 2024
# Start MCP server
edinet-mcp serve
```
## API Reference
### `EdinetClient`
All client methods are async. Use `async with` for proper resource cleanup:
```python
import asyncio
from edinet_mcp import EdinetClient
async def main():
async with EdinetClient(
api_key="...", # or EDINET_API_KEY env var
cache_dir="~/.cache/edinet-mcp",
rate_limit=0.5, # requests per second
max_retries=3, # retry on 429/5xx with exponential backoff
) as client:
# Search
companies: list[Company] = await client.search_companies("query")
company: Company = await client.get_company("E02144")
# Filings
filings: list[Filing] = await client.get_filings(
start_date="2024-01-01",
edinet_code="E02144",
doc_type="annual_report",
)
# Financial statements (by edinet_code + period)
stmt: FinancialStatement = await client.get_financial_statements(
edinet_code="E02144",
period="2024", # Filing year (not fiscal year)
)
# Or get the most recent filing (within past 365 days)
stmt = await client.get_financial_statements(edinet_code="E02144")
df = stmt.income_statement.to_polars() # Polars DataFrame
df = stmt.income_statement.to_pandas() # pandas DataFrame (optional dep)
asyncio.run(main())
```
### `Filing`
Filing objects returned by `get_filings()` have the following attributes:
```python
for filing in filings:
print(filing.description) # "有価証券報告書－第121期(...)"
print(filing.filing_date) # datetime.date(2025, 6, 18)
print(filing.doc_id) # "S100VWVY"
print(filing.company_name) # "トヨタ自動車株式会社"
print(filing.period_start) # datetime.date(2024, 4, 1)
print(filing.period_end) # datetime.date(2025, 3, 31)
```
### `StatementData`
Each financial statement (BS, PL, CF) is a `StatementData` object with dict-like access:
```python
# Dict-like access by Japanese label
stmt.income_statement["売上高"] # → {"当期": 45095325, "前期": 37154298}
stmt.income_statement.get("営業利益") # → {"当期": 5352934} or None
stmt.income_statement.labels # → ["売上高", "営業利益", ...]
# DataFrame export
stmt.balance_sheet.to_polars() # → polars.DataFrame
stmt.balance_sheet.to_pandas() # → pandas.DataFrame (requires pandas)
stmt.balance_sheet.to_dicts() # → list[dict]
len(stmt.balance_sheet) # number of line items
# Raw XBRL data preserved
stmt.income_statement.raw_items # original pre-normalization data
```
### Normalization
edinet-mcp automatically normalizes XBRL element names across accounting standards:
| Accounting Standard | XBRL Element | Normalized Label |
|---|---|---|
| J-GAAP | `NetSales` | 売上高 |
| IFRS | `Revenue`, `SalesRevenuesIFRS` | 売上高 |
| US-GAAP | `Revenues` | 売上高 |
Mappings are defined in [`taxonomy.yaml`](src/edinet_mcp/data/taxonomy.yaml) — 161 items covering PL (42), BS (79), and CF (40), with IFRS/US-GAAP element variants automatically resolved via suffix stripping. Add new mappings by editing the YAML file, no code changes needed.
```python
from edinet_mcp import get_taxonomy_labels
# Discover available labels
labels = get_taxonomy_labels("income_statement")
# [{"id": "revenue", "label": "売上高", "label_en": "Revenue"}, ...]
```
### EDINET Suffix Stripping
EDINET appends accounting-standard and section-specific suffixes to XBRL element names (e.g., `TotalAssetsIFRSSummaryOfBusinessResults`). These are automatically stripped to match canonical taxonomy entries. Non-consolidated (単体) contexts are filtered out to prefer consolidated figures.
## Architecture
```
EDINET API → Parser (XBRL/TSV) → Normalizer (taxonomy.yaml) → MCP Server
↓
StatementData["売上高"]
calculate_metrics(stmt)
compare_periods(stmt)
```
## Development
```bash
git clone https://github.com/ajtgjmdjp/edinet-mcp
cd edinet-mcp
uv sync --extra dev
uv run pytest -v # 213 tests
uv run ruff check src/
```
## Data Attribution
This project uses data from [EDINET](https://disclosure.edinet-fsa.go.jp/)
(Electronic Disclosure for Investors' NETwork), operated by the
Financial Services Agency of Japan (金融庁).
EDINET data is provided under the [Public Data License 1.0](https://www.digital.go.jp/resources/open_data/).
## Related Projects
**Japan Finance Data Stack** (by same author):
- [tdnet-disclosure-mcp](https://github.com/ajtgjmdjp/tdnet-disclosure-mcp) — TDNET timely disclosures (適時開示)
- [estat-mcp](https://github.com/ajtgjmdjp/estat-mcp) — Government statistics (e-Stat)
- [boj-mcp](https://github.com/ajtgjmdjp/boj-mcp) — Bank of Japan statistics
- [stockprice-mcp](https://github.com/ajtgjmdjp/stockprice-mcp) — Stock prices & FX rates (yfinance)
- [jfinqa](https://github.com/ajtgjmdjp/jfinqa) — Japanese financial QA benchmark
**Community**:
- [edinet2dataset](https://github.com/SakanaAI/edinet2dataset) — Sakana AI's EDINET XBRL→JSON tool
- [EDINET-Bench](https://github.com/SakanaAI/EDINET-Bench) — Financial classification benchmark
## License
Apache-2.0. See [NOTICE](NOTICE) for third-party attributions.