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findata-mcp

A unified financial data library with an MCP server for code-writing agents.

When an agent queries the MCP (e.g. "equity daily prices"), it receives:

  • The findata wrapper function signature

  • Full parameter and return-type documentation

  • A ready-to-paste code example calling our API

The MCP never fetches live data — it is a documentation server so agents can write correct calls to the findata library.


Project structure

data-mcp/
├── findata/                         Data library
│   ├── equity_prices.py             get_equity_prices()           yfinance wrapper
│   ├── sp500_composition.py         get_sp500_composition()       fja05680/sp500 (local git clone)
│   ├── fama_french.py               get_fama_french_factors()     Ken French Data Library
│   ├── fred.py                      get_fred_series()             FRED macroeconomic series
│   ├── cboe_volatility.py           get_cboe_volatility_indices() VIX / VVIX
│   ├── coingecko.py                 get_coingecko_ohlcv()         CoinGecko public API
│   ├── file_reader.py               get_file_data()               CSV / Parquet / Excel
│   └── bloomberg.py                 get_bloomberg_ticks()         blpapi — tick-by-tick
│                                    get_bloomberg_bars()          blpapi — intraday OHLCV
│                                    get_bloomberg_data()          blpapi — historical / reference
├── findata_mcp/
│   └── server.py                    Tool registry + MCP handlers
├── Dockerfile
├── docker-compose.yml
├── .github/workflows/docker.yml     GHCR build + push on every push to main
├── pyproject.toml
└── README.md

Related MCP server: FinData MCP

Installation

The recommended way to run findata-mcp is via Docker. The image is published to GHCR on every push to main and includes Codex CLI baked in.

Prerequisites

  • Docker

  • Codex authenticated on your host machine

1. Authenticate Codex (one-time)

codex auth login    # opens browser → saves to ~/.codex/auth.json

2. Pull and run

curl -O https://raw.githubusercontent.com/lakshya-aga/data-mcp/main/docker-compose.yml
docker compose up -d

docker-compose.yml mounts ~/.codex read-only so the container inherits your Codex session with no interactive prompts. Named volumes keep generated files and data across restarts.

3. Verify

docker logs data-mcp-findata-mcp-1
# should show: findata-mcp starting on :8000

Connecting to the server

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json:

{
  "mcpServers": {
    "findata": {
      "url": "http://localhost:8000/sse"
    }
  }
}

Python (raw MCP client)

import asyncio
from mcp.client.sse import sse_client
from mcp.client.session import ClientSession

async def main():
    async with sse_client("http://localhost:8000/sse") as (r, w):
        async with ClientSession(r, w) as s:
            await s.initialize()
            res = await s.call_tool("search_tools", {"query": "equity daily prices", "top_k": 3})
            print(res.content[0].text)

asyncio.run(main())

OpenAI Agents SDK

from agents.mcp import MCPServerSse
mcp = MCPServerSse(url="http://localhost:8000/sse")

MCP tools

Tool

Description

search_tools

Natural-language query → matching function docs + code examples

get_tool_doc

Full reference for one function by exact name

list_all_tools

All wrapper functions with summaries and tags

request_data_source

Ask Codex to implement and register a new data wrapper

search_tools

res = await s.call_tool("search_tools", {"query": "fama french factors", "top_k": 2})

get_tool_doc

res = await s.call_tool("get_tool_doc", {"tool_name": "get_equity_prices"})

request_data_source

res = await s.call_tool("request_data_source", {
    "description": "get World Bank GDP per capita using the wbdata library"
})

Codex writes findata/<module>.py, updates server.py, and hot-reloads the new function into the live registry — no restart needed.


Environment variables

Variable

Description

OPENAI_API_KEY

Codex auth — skips OAuth if set (alternative to host auth mount)

FRED_API_KEY

Required for get_fred_series. Free at fred.stlouisfed.org

CODEX_CLI_PATH

Override Codex binary path (defaults to codex on PATH)

BLOOMBERG_HOST

Bloomberg API host for the get_bloomberg_* functions (default localhost)

BLOOMBERG_PORT

Bloomberg API port (default 8194)

BLOOMBERG_TIMEOUT_MS

Per-event wait before a Bloomberg request is abandoned (default 30000)

BLOOMBERG_AUTH

setAuthenticationOptions string for Server API / B-PIPE, e.g. AuthenticationType=OS_LOGON. Leave unset for a desktop Terminal


findata quick reference

get_equity_prices

from findata.equity_prices import get_equity_prices

df = get_equity_prices(
    tickers=["AAPL", "MSFT"],
    start_date="2024-01-01",
    end_date="2024-12-31",
    fields=["Close"],
    frequency="1d",         # 1d 5d 1wk 1mo 3mo
)

get_fama_french_factors

from findata.fama_french import get_fama_french_factors

df = get_fama_french_factors(factor_model="5", start_date="2010-01-01", end_date="2020-12-31")
# columns: Mkt-RF, SMB, HML, RMW, CMA, RF

get_fred_series

from findata.fred import get_fred_series

df = get_fred_series(["CPIAUCSL", "UNRATE"], start_date="2015-01-01", end_date="2024-12-31")

get_coingecko_ohlcv

from findata.coingecko import get_coingecko_ohlcv

df = get_coingecko_ohlcv("bitcoin", vs_currency="usd", days=90)
# columns: open, high, low, close, volume

get_cboe_volatility_indices

from findata.cboe_volatility import get_cboe_volatility_indices

df = get_cboe_volatility_indices(symbols=["^VIX", "^VVIX"], start_date="2020-01-01", end_date="2024-12-31")

get_sp500_composition

from findata.sp500_composition import get_sp500_composition

members = get_sp500_composition("2024-12-31")   # list[str], ~503 tickers

get_bloomberg_ticks — tick-level data for any security

Requires a Bloomberg Terminal, SAPI or B-PIPE entitlement and the SDK:

pip install blpapi --index-url https://bcms.bloomberg.com/pip/simple/
from findata.bloomberg import get_bloomberg_ticks

# Every trade print in one US cash session, in New York time
ticks = get_bloomberg_ticks(
    "AAPL US Equity",
    "2024-06-03 09:30:00",
    "2024-06-03 16:00:00",
    tz="America/New_York",
)
# index = time (tz-aware)
# columns: security, type, value, size, conditionCodes, exchangeCode

# Trades AND top-of-book quotes, one hour per sub-request
book = get_bloomberg_ticks(
    "ESZ5 Index",
    "2024-06-03 13:30:00",
    "2024-06-03 20:00:00",
    event_types=["TRADE", "BID", "ASK"],
    chunk="1h",
)

# VWAP straight from the prints
trades = ticks[ticks["type"] == "TRADE"]
vwap = (trades["value"] * trades["size"]).sum() / trades["size"].sum()

The security string is passed to Bloomberg verbatim, so anything the Terminal quotes works — "AAPL US Equity", "ESZ5 Index", "EURUSD Curncy", "TY1 Comdty", "US912810TW33 Govt".

Long windows are sliced into chunk-sized sub-requests (default one day) and concatenated, because Bloomberg truncates an oversized intraday response silently rather than erroring. Bloomberg's own limits still apply: intraday tick history reaches back roughly 140 days, and daily volume caps are tied to your entitlement.

Reuse one session when looping over a universe — it avoids a connection handshake per name:

from findata.bloomberg import BloombergSession, get_bloomberg_ticks

with BloombergSession() as bbg:
    frames = {
        sym: get_bloomberg_ticks(sym, start, end, session=bbg)
        for sym in universe
    }

Aggregate ticks into bars locally, at any pandas offset:

from findata.bloomberg import ticks_to_bars

bars = ticks_to_bars(ticks, rule="5min")
# columns: open, high, low, close, ticks, volume, vwap

get_bloomberg_bars

from findata.bloomberg import get_bloomberg_bars

# 5-minute bars, aggregated server-side (much lighter than raw ticks)
bars = get_bloomberg_bars(
    "AAPL US Equity",
    "2024-06-03 09:30:00",
    "2024-06-03 16:00:00",
    interval=5,                 # minutes, 1-1440
    tz="America/New_York",
)
# columns: security, open, high, low, close, volume, numEvents, value

get_bloomberg_data

from findata.bloomberg import get_bloomberg_data

# Historical daily series -> MultiIndex columns (field, security)
df = get_bloomberg_data(
    tickers=["AAPL US Equity", "MSFT US Equity"],
    fields=["PX_LAST", "VOLUME"],
    start_date="2024-01-01",
    end_date="2024-12-31",
)
close = df["PX_LAST"]

# Reference data -> rows=securities, cols=fields
ref = get_bloomberg_data(
    tickers=["AAPL US Equity"],
    fields=["CUR_MKT_CAP", "GICS_SECTOR_NAME"],
    request_type="ReferenceDataRequest",
    overrides={"BEST_FPERIOD_OVERRIDE": "1BF"},
)

get_file_data

from findata.file_reader import get_file_data

df = get_file_data("data/prices.parquet", tickers=["AAPL"], start_date="2023-01-01", end_date="2023-12-31")

Tests

pytest tests/ -v

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