Bloomberg MCP

A Model Context Protocol server that gives AI assistants direct access to Bloomberg Terminal data.

Bloomberg MCP bridges the Bloomberg Terminal with AI assistants via the Model Context Protocol. It exposes 22 tools covering reference data, bulk data, historical analysis, technical analysis, estimates, ownership, supply chain, screening, BQL queries, and calendars — all accessible through natural language.

Enhanced fork of tallinn102/bloomberg-mcp with modular architecture, expanded Bloomberg API coverage, caching layer, and 10 new analytical FieldSets.

You: "What are the top holders and supply chain for CEG US Equity?"

Claude: runs bloomberg_get_bulk_data with TOP_20_HOLDERS_PUBLIC_FILINGS
        runs bloomberg_get_supply_chain with suppliers + customers
        → Returns structured holder list + supplier/customer network

Architecture

graph TB
    subgraph Clients
        CC[Claude Code]
        WC[Web Client]
        CA[Custom App]
    end

    subgraph "Bloomberg MCP Server"
        direction TB
        MCP["FastMCP Server<br/><i>22 tools exposed</i>"]

        subgraph Handlers["Handler Layer"]
            direction LR
            REF[Reference & Historical]
            BULK[Bulk Data & Estimates]
            TA[Technical Analysis]
            SCREEN[Screening & BQL]
            OWN[Ownership & Supply Chain]
            CAL[Calendars]
        end

        subgraph Core["Core Layer"]
            direction LR
            SESSION["BloombergSession<br/><i>Singleton + Cache</i>"]
            REQ[Request Builder]
            RESP[Response Parser]
        end
    end

    BBG["Bloomberg Terminal<br/><i>blpapi on port 8194</i>"]

    CC -- stdio --> MCP
    WC -- HTTP/SSE --> MCP
    CA -- HTTP/SSE --> MCP
    MCP --> Handlers
    Handlers --> Core
    SESSION <--> BBG
    REQ --> SESSION
    SESSION --> RESP

    style MCP fill:#1a73e8,stroke:#1557b0,color:#fff
    style BBG fill:#ff6f00,stroke:#e65100,color:#fff
    style SESSION fill:#2e7d32,stroke:#1b5e20,color:#fff

Tools Overview (22 tools)

graph LR
    subgraph "Market Data (4)"
        T1["bloomberg_get_reference_data<br/><i>BDP snapshots</i>"]
        T2["bloomberg_get_historical_data<br/><i>BDH time series</i>"]
        T3["bloomberg_get_intraday_bars<br/><i>OHLCV candles</i>"]
        T4["bloomberg_get_intraday_ticks<br/><i>Raw ticks</i>"]
    end

    subgraph "Bulk Data & Analysis (4)"
        T5["bloomberg_get_bulk_data<br/><i>BDS tables</i>"]
        T6["bloomberg_get_estimates_detail<br/><i>Multi-period consensus</i>"]
        T7["bloomberg_get_ownership<br/><i>Holder analysis</i>"]
        T8["bloomberg_get_supply_chain<br/><i>SPLC network</i>"]
    end

    subgraph "Technical & BQL (2)"
        T9["bloomberg_get_technical_analysis<br/><i>RSI, MACD, Bollinger...</i>"]
        T10["bloomberg_run_bql<br/><i>Query language</i>"]
    end

    subgraph "Discovery (3)"
        T11["bloomberg_search_securities<br/><i>Find by name/ticker</i>"]
        T12["bloomberg_search_fields<br/><i>Field mnemonics</i>"]
        T13["bloomberg_get_field_info<br/><i>Field metadata</i>"]
    end

    subgraph "Screening (3)"
        T14["bloomberg_run_screen<br/><i>Saved EQS screens</i>"]
        T15["bloomberg_get_universe<br/><i>Index constituents</i>"]
        T16["bloomberg_dynamic_screen<br/><i>Custom filter + rank</i>"]
    end

    subgraph "Calendars (2)"
        T17["bloomberg_get_economic_calendar<br/><i>Fed, BoJ, ECB...</i>"]
        T18["bloomberg_get_earnings_calendar<br/><i>Earnings dates</i>"]
    end

    style T5 fill:#1a73e8,stroke:#1557b0,color:#fff
    style T6 fill:#1a73e8,stroke:#1557b0,color:#fff
    style T7 fill:#1a73e8,stroke:#1557b0,color:#fff
    style T8 fill:#1a73e8,stroke:#1557b0,color:#fff
    style T9 fill:#7b1fa2,stroke:#6a1b9a,color:#fff
    style T10 fill:#7b1fa2,stroke:#6a1b9a,color:#fff

What's New (vs upstream)

• Modular architecture — server.py refactored from 1,798 lines to ~89 lines. Handlers, models, formatters, and utils cleanly separated.
• 9 new tools — BDS bulk data, multi-period estimates, technical analysis (//blp/tasvc), ownership analysis, supply chain (SPLC), BQL queries (//blp/bqlsvc), and more.
• Cache layer — TTL-based in-memory cache with data-type-aware expiration (30s for prices, 24h for static data).
• 10 new FieldSets — Pre-defined field collections for estimates, profitability, cash flow, balance sheet, ownership, governance, risk, valuation, earnings surprise, and growth.
• Full Bloomberg API surface — Covers //blp/refdata, //blp/instruments, //blp/apiflds, //blp/tasvc, //blp/bqlsvc.

Data Flow

sequenceDiagram
    participant Client as AI Assistant
    participant MCP as MCP Server
    participant Cache as Cache Layer
    participant Val as Pydantic Validation
    participant Expand as Field Expander
    participant Session as BloombergSession
    participant BBG as Bloomberg Terminal

    Client->>MCP: Tool call (JSON)
    MCP->>Val: Validate input model
    Val-->>MCP: Validated params

    alt FieldSet shortcuts used
        MCP->>Expand: Expand FieldSet shortcuts
        Expand-->>MCP: Resolved field list
    end

    MCP->>Cache: Check cache
    alt Cache hit
        Cache-->>MCP: Cached result
    else Cache miss
        MCP->>Session: Build & send request
        Session->>BBG: blpapi Request
        BBG-->>Session: blpapi Response
        Session-->>MCP: Parsed dataclasses
        MCP->>Cache: Store with TTL
    end

    alt Markdown format
        MCP-->>Client: Formatted table
    else JSON format
        MCP-->>Client: Structured JSON
    end

Bloomberg Services

graph LR
    subgraph "Bloomberg Terminal (localhost:8194)"
        R["//blp/refdata<br/><i>BDP, BDH, BDS, BEQS</i>"]
        I["//blp/instruments<br/><i>Security lookup</i>"]
        F["//blp/apiflds<br/><i>Field discovery</i>"]
        T["//blp/tasvc<br/><i>Technical analysis</i>"]
        B["//blp/bqlsvc<br/><i>Query language</i>"]
    end

    R --- T1[Reference Data]
    R --- T2[Historical Data]
    R --- T3[Intraday Bars/Ticks]
    R --- T4[Bulk Data]
    R --- T5[Estimates]
    R --- T6[Screening]
    I --- T7[Security Search]
    F --- T8[Field Search]
    T --- T9[RSI / MACD / Bollinger]
    B --- T10[Dynamic Queries]

    style R fill:#ff6f00,stroke:#e65100,color:#fff
    style T fill:#7b1fa2,stroke:#6a1b9a,color:#fff
    style B fill:#1a73e8,stroke:#1557b0,color:#fff

Tool Reference

Market Data

| Tool | Description | Key Parameters | |------|-------------|----------------| | bloomberg_get_reference_data | Current field values (BDP) for any security | securities, fields, overrides | | bloomberg_get_historical_data | Time series (BDH) with configurable periodicity | securities, fields, start_date, end_date, periodicity | | bloomberg_get_intraday_bars | OHLCV candles (1/5/15/30/60 min) | security, start_datetime, end_datetime, interval | | bloomberg_get_intraday_ticks | Raw tick-level trade/quote data | security, start_datetime, end_datetime, event_types |

Bulk Data & Analysis — NEW

| Tool | Description | Key Parameters | |------|-------------|----------------| | bloomberg_get_bulk_data | Bulk reference data (BDS) — holders, dividends, supply chain, index members | security, field, overrides, max_rows | | bloomberg_get_estimates_detail | Multi-period consensus estimates with revision momentum | securities, periods, metrics | | bloomberg_get_ownership | Comprehensive ownership analysis (holders + insider + institutional) | security, include_holders, include_changes | | bloomberg_get_supply_chain | Bloomberg SPLC supply chain data (suppliers, customers, competitors) | security, include_suppliers, include_customers |

Technical Analysis & BQL — NEW

| Tool | Description | Key Parameters | |------|-------------|----------------| | bloomberg_get_technical_analysis | TA indicators via //blp/tasvc (RSI, MACD, Bollinger, SMA, EMA, DMI, Stochastic) | security, indicators, start_date, end_date | | bloomberg_run_bql | Execute Bloomberg Query Language queries | query |

Discovery

| Tool | Description | Key Parameters | |------|-------------|----------------| | bloomberg_search_securities | Find securities by name or partial ticker | query, yellow_key, max_results | | bloomberg_search_fields | Discover Bloomberg field mnemonics | query, field_type | | bloomberg_get_field_info | Detailed field metadata and documentation | field_ids |

Screening

| Tool | Description | Key Parameters | |------|-------------|----------------| | bloomberg_run_screen | Execute saved Bloomberg EQS screens | screen_name, screen_type | | bloomberg_get_universe | Index/screen constituents with optional fields | source, include_fields | | bloomberg_dynamic_screen | Custom filtering, ranking, and field selection | universe, fields, filters, rank_by, top_n |

Calendars

| Tool | Description | Key Parameters | |------|-------------|----------------| | bloomberg_get_economic_calendar | Upcoming macro releases by region/importance | mode, regions, importance | | bloomberg_get_earnings_calendar | Earnings announcements by universe/timing | mode, universe, days_ahead |

All tools support response_format: "markdown" (default) or "json".

FieldSet Shortcuts

Instead of remembering Bloomberg field mnemonics, use shorthand names that expand to multiple fields.

Core FieldSets

| FieldSet | Fields | Description | |----------|--------|-------------| | PRICE | 5 | PX_LAST, PX_OPEN, PX_HIGH, PX_LOW, CHG_PCT_1D | | MOMENTUM | 4 | CHG_PCT_1D, CHG_PCT_5D, CHG_PCT_1M, CHG_PCT_YTD | | MOMENTUM_EXTENDED | 7 | + CHG_PCT_3M, CHG_PCT_6M, CHG_PCT_1YR | | RVOL | 3+1 | VOLUME, VOLUME_AVG_20D, TURNOVER + computed rvol | | TECHNICAL | 4 | RSI_14D, VOLATILITY_30D, VOLATILITY_90D, BETA_RAW_OVERRIDABLE | | VALUATION | 5 | PE_RATIO, PX_TO_BOOK_RATIO, EV_TO_EBITDA, DIVIDEND_YIELD, CUR_MKT_CAP | | ANALYST | 3 | EQY_REC_CONS, BEST_TARGET_PRICE, BEST_EPS | | SECTOR | 2 | GICS_SECTOR_NAME, GICS_INDUSTRY_NAME | | SCREENING_FULL | 30+ | All of the above combined |

Analytical FieldSets — NEW

| FieldSet | Fields | Key Bloomberg Mnemonics | |----------|--------|------------------------| | ESTIMATES_CONSENSUS | 10 | BEST_EPS, BEST_SALES, BEST_EPS_4WK_CHG, BEST_TARGET_PRICE | | PROFITABILITY | 7 | GROSS_MARGIN, ROE, ROA, ROIC, OPER_MARGIN | | CASH_FLOW | 6 | FCF_YIELD, CF_FROM_OPS, NET_INCOME, EBITDA | | BALANCE_SHEET | 6 | D/E, INTEREST_COV, CUR_RATIO, NET_DEBT | | OWNERSHIP | 5 | INSIDER%, INST%, SHORT_INT_RATIO | | GOVERNANCE | 4 | ESG scores (overall, E, S, G) | | RISK | 6 | BETA, VOL 10/30/90/260D, MKT_CAP | | VALUATION_EXTENDED | 9 | PE, P/B, P/S, EV/EBITDA, P/FCF, DVD_YLD | | EARNINGS_SURPRISE | 6 | EPS/sales actual vs estimate + surprise | | GROWTH | 4 | Sales/EPS/EBITDA growth, LT growth est |

Dynamic Screening

The most powerful tool. Build custom screens with pre-validated field sets, filters, and ranking — no need to know Bloomberg field mnemonics.

flowchart LR
    A["Universe<br/><i>index, screen,<br/>or ticker list</i>"] --> B["Field Expansion<br/><i>FieldSet shortcuts<br/>→ Bloomberg fields</i>"]
    B --> C["Bloomberg API<br/><i>ReferenceDataRequest</i>"]
    C --> D["Filter<br/><i>gt, lt, between,<br/>in, eq, ...</i>"]
    D --> E["Rank & Slice<br/><i>rank_by + top_n</i>"]
    E --> F["Response<br/><i>Markdown table<br/>or JSON</i>"]

    style A fill:#e8f5e9,stroke:#2e7d32
    style C fill:#fff3e0,stroke:#ff6f00
    style F fill:#e3f2fd,stroke:#1a73e8

Filter Operators

| Operator | Description | Example | |----------|-------------|---------| | gt / gte | Greater than (or equal) | {"field": "rvol", "op": "gt", "value": 1.5} | | lt / lte | Less than (or equal) | {"field": "RSI_14D", "op": "lt", "value": 30} | | eq / neq | Equals / not equals | {"field": "GICS_SECTOR_NAME", "op": "eq", "value": "Technology"} | | between | Range (inclusive) | {"field": "PE_RATIO", "op": "between", "value": [10, 25]} | | in | Value in list | {"field": "GICS_SECTOR_NAME", "op": "in", "value": ["Tech", "Health Care"]} |

Example: Find Oversold High-Volume Stocks

{
  "universe": "index:SPX Index",
  "fields": ["PRICE", "RVOL", "TECHNICAL", "SECTOR"],
  "filters": [
    {"field": "RSI_14D", "op": "lt", "value": 30},
    {"field": "rvol", "op": "gt", "value": 2.0}
  ],
  "rank_by": "rvol",
  "rank_descending": true,
  "top_n": 20
}

Common BDS (Bulk Data) Fields

| Field | Returns | |-------|---------| | TOP_20_HOLDERS_PUBLIC_FILINGS | Top 20 shareholders with positions and dates | | DVD_HIST_ALL | Complete dividend history | | SUPPLY_CHAIN_SUPPLIERS | Supplier list with revenue exposure | | SUPPLY_CHAIN_CUSTOMERS | Customer list with revenue exposure | | SUPPLY_CHAIN_COMPETITORS | Competitor list | | INDX_MEMBERS | Index constituents | | ANALYST_RECOMMENDATIONS | Analyst ratings detail | | EARN_ANN_DT_TIME_HIST_WITH_EPS | Historical earnings with actual EPS | | BOARD_OF_DIRECTORS | Board members |

Cache Layer

The built-in cache reduces Bloomberg API load with data-type-aware TTLs:

| Data Type | TTL | Rationale | |-----------|-----|-----------| | Static reference (name, sector) | 24 hours | Rarely changes | | Financial statements | 7 days | Quarterly updates | | Estimates / consensus | 4 hours | Updates throughout day | | Price / volume | 30 seconds | Near real-time | | Historical (EOD) | 12 hours | End-of-day data stable | | Bulk data (holders, supply chain) | 24 hours | Daily updates |

Project Structure

graph TB
    subgraph "src/bloomberg_mcp/"
        SERVER["server.py<br/><i>~89 lines, thin entry point</i>"]

        subgraph models["models/"]
            INPUTS["inputs.py<br/><i>22 Pydantic models</i>"]
            ENUMS["enums.py<br/><i>ResponseFormat, modes</i>"]
        end

        subgraph handlers["handlers/"]
            direction TB
            H_REF["reference.py"]
            H_HIST["historical.py"]
            H_INTRA["intraday.py"]
            H_SEARCH["search.py"]
            H_SCREEN["screening.py"]
            H_CAL["calendars.py"]
            H_BULK["bulk.py ★"]
            H_EST["estimates.py ★"]
            H_TECH["technical.py ★"]
            H_OWN["ownership.py ★"]
            H_SC["supply_chain.py ★"]
            H_BQL["bql.py ★"]
        end

        FMTR["formatters.py"]
        UTILS["utils.py"]

        subgraph core["core/"]
            SESSION["session.py<br/><i>Singleton</i>"]
            CACHE["cache.py ★<br/><i>TTL cache</i>"]
            REQ["requests.py"]
            RESP["responses.py"]
        end

        subgraph tools["tools/"]
            direction TB
            T_REF["reference.py"]
            T_HIST["historical.py"]
            T_SEARCH["search.py"]

            subgraph ds["dynamic_screening/"]
                MODELS_DS["models.py<br/><i>19+ FieldSets</i>"]
                SCREEN_DS["screen.py"]
                FILTERS["filters.py"]
            end

            subgraph mn["morning_note/"]
                MN_CFG["config.py"]
                MN_US["us_session.py"]
                MN_STORE["storage.py"]
            end
        end
    end

    SERVER --> handlers
    SERVER --> models
    handlers --> core
    handlers --> FMTR
    handlers --> UTILS

    style SERVER fill:#1a73e8,stroke:#1557b0,color:#fff
    style SESSION fill:#2e7d32,stroke:#1b5e20,color:#fff
    style CACHE fill:#2e7d32,stroke:#1b5e20,color:#fff
    style H_BULK fill:#e65100,stroke:#bf360c,color:#fff
    style H_EST fill:#e65100,stroke:#bf360c,color:#fff
    style H_TECH fill:#e65100,stroke:#bf360c,color:#fff
    style H_OWN fill:#e65100,stroke:#bf360c,color:#fff
    style H_SC fill:#e65100,stroke:#bf360c,color:#fff
    style H_BQL fill:#e65100,stroke:#bf360c,color:#fff

★ = New in v2

Installation

Prerequisites

• Python 3.10+
• Bloomberg Terminal running and logged in — connects via localhost:8194
• Bloomberg C++ SDK (blpapi_cpp)
• Bloomberg Python SDK (blpapi)

Setup

# 1. Set Bloomberg C++ SDK path
export BLPAPI_ROOT=/path/to/blpapi_cpp_3.x.x.x

# 2. Install blpapi Python SDK
pip install blpapi

# 3. Install bloomberg-mcp
pip install -e .

Configure Claude Code

Add to your Claude Code MCP settings:

{
  "mcpServers": {
    "bloomberg-mcp": {
      "command": "python",
      "args": ["-m", "bloomberg_mcp.server"],
      "cwd": "/path/to/bloomberg-mcp",
      "env": {
        "BLOOMBERG_HOST": "localhost",
        "BLOOMBERG_PORT": "8194"
      }
    }
  }
}

Quick Start

As a Python Library

from bloomberg_mcp.tools import get_reference_data, get_historical_data

# Current prices and fundamentals
data = get_reference_data(
    securities=["AAPL US Equity", "700 HK Equity", "2899 HK Equity"],
    fields=["PX_LAST", "PE_RATIO", "DIVIDEND_YIELD"]
)
for sec in data:
    print(f"{sec.security}: {sec.fields.get('PX_LAST')}")

# Multi-period estimates with overrides
data = get_reference_data(
    securities=["CEG US Equity"],
    fields=["BEST_EPS", "BEST_EPS_4WK_CHG", "BEST_TARGET_PRICE"],
    overrides={"BEST_FPERIOD_OVERRIDE": "1FY"}
)

# Historical time series
hist = get_historical_data(
    securities=["SPY US Equity"],
    fields=["PX_LAST", "VOLUME"],
    start_date="20240101",
    end_date="20241231",
    periodicity="DAILY"
)

As an MCP Server

# stdio (default — for Claude Code)
python -m bloomberg_mcp.server

# HTTP transport (for web clients)
python -m bloomberg_mcp.server --http --port=8080

# SSE transport (for streaming clients)
python -m bloomberg_mcp.server --sse --port=8080

Docker Deployment

graph LR
    subgraph Docker
        MCP["bloomberg-mcp<br/><i>:8080</i>"]
    end

    subgraph Host
        BBG["Bloomberg Terminal<br/><i>:8194</i>"]
    end

    Client["AI Client"] -- "HTTP/SSE" --> MCP
    MCP -- "host.docker.internal:8194" --> BBG

    style MCP fill:#1a73e8,stroke:#1557b0,color:#fff
    style BBG fill:#ff6f00,stroke:#e65100,color:#fff

docker-compose up -d
docker-compose logs -f bloomberg-mcp

Security Identifier Formats

AAPL US Equity       # US stock
VOD LN Equity        # UK stock (London)
7203 JP Equity       # Japan stock (numeric)
700 HK Equity        # Hong Kong stock
1133 HK Equity       # Hong Kong stock (numeric)
601012 CH Equity     # A-share (Shanghai)
002594 CH Equity     # A-share (Shenzhen)
300750 CH Equity     # A-share (ChiNext)
SPX Index            # Index
HSI Index            # Hang Seng Index
VIX Index            # Volatility index
EUR Curncy           # Currency
CL1 Comdty           # Commodity future
SPY US Equity        # ETF

Contributing

Contributions welcome! Please open an issue or submit a pull request.

pip install -e ".[dev]"
pytest                    # Unit tests (no Bloomberg needed)
pytest tests/integration/ # Integration tests (needs Terminal)
black src/ tests/
ruff check src/ tests/

Credits

• Original project: tallinn102/bloomberg-mcp
• Enhanced by: QmQsun — modular refactor, expanded API coverage, caching, new analytical tools

License

MIT — see LICENSE for details.