Bloomberg-MCP: Instructions file for Claude Code

CLAUDE.md

Bloomberg-MCP CLAUDE.md is an instructions file for Claude Code from QmQsun/Bloomberg-MCP. It costs 5,154 tokens per session, scanned A, original, MIT.

A project guide for connecting an AI assistant to Bloomberg Terminal data through a server using the Model Context Protocol.

In plain words
What is it for?
Use it when developing or maintaining tools that retrieve Bloomberg reference, historical, intraday, screening, economic-calendar, or earnings data.
Why use it?
It gives an agent the project structure, function signatures, imports, and data types needed to work on the Bloomberg data connection.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md.

This is QmQsun/Bloomberg-MCP's own configuration. It tells Claude Code how to work on Bloomberg-MCP itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Bloomberg-MCP configures →

Reuse

Borrowing it

Nothing to install: this file belongs to QmQsun/Bloomberg-MCP. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/QmQsun/Bloomberg-MCP/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/QmQsun/Bloomberg-MCP

Made for: Claude Code.

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Per session 5,154 This file is loaded in full into every session.
When invoked 5,154 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.05154 $0.05154
Opus 5 $0.02577 $0.02577
Sonnet 5 $0.01031 $0.01031
Haiku 4.5 $0.00515 $0.00515

Measured 9d ago against content hash b0b88c88e454, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

Bloomberg-MCP CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 543 lines

How it starts

The opening of the file, as written. The whole thing — 543 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bloomberg MCP — Project Guide

Data access layer for Bloomberg Terminal via blpapi + MCP (Model Context Protocol). This server exposes Bloomberg data tools to AI assistants via natural language.

Current state: 12 tools, modular structure (PHASE 0 complete). Target state: ~22 tools, full Bloomberg API surface coverage.


Architecture Overview

src/bloomberg_mcp/
├── server.py                # FastMCP init + entry point (~89 lines)
├── models/
│   ├── __init__.py          # Re-exports all models
│   ├── enums.py             # ResponseFormat, EconomicCalendarModeInput, EarningsModeInput
│   └── inputs.py            # ALL Pydantic BaseModel input classes
├── handlers/
│   ├── __init__.py          # Imports all handler modules to trigger registration
│   ├── reference.py         # bloomberg_get_reference_data handler
│   ├── historical.py        # bloomberg_get_historical_data handler
│   ├── intraday.py          # bloomberg_get_intraday_bars + ticks handlers
│   ├── search.py            # search_securities + search_fields + field_info
│   ├── screening.py         # run_screen + get_universe + dynamic_screen
│   └── calendars.py         # economic_calendar + earnings_calendar
├── formatters.py            # _format_security_data, _format_historical_data, etc.
├── utils.py                 # _expand_fields, _normalize_date, _truncate_response, _get_session
├── core/
│   ├── session.py           # BloombergSession singleton (376 lines, solid)
│   ├── requests.py          # blpapi request builders using fromPy() (507 lines, solid)
│   └── responses.py         # Response parsers using toPy() (416 lines, needs BDS/TA/BQL)
└── tools/
    ├── reference.py         # get_reference_data() — thin wrapper
    ├── historical.py        # get_historical_data() — thin wrapper
    ├── intraday.py          # get_intraday_bars/ticks() — thin wrapper
    ├── search.py            # search_securities/fields/field_info (204 lines)
    ├── screening.py         # run_screen() — BEQS wrapper
    ├── dynamic_screening/   # DSL system: FieldSet + Filter + DynamicScreen (2,567 lines, mature)
    ├── morning_note/        # Market data collection system (3,648 lines, Japan-focused)
    ├── economic_calendar/   # Macro event calendar (874 lines)
    └── earnings_calendar/   # Earnings announcements (640 lines)

Read the full file on GitHub · 543 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 543 lines · 5,154 tokens per session scan A b0b88c88e454

Subscribe to this mod's changes

Bloomberg-MCP CLAUDE.md is an instructions file published in the GitHub repository QmQsun/Bloomberg-MCP (17 stars, last pushed 4mo ago), licensed MIT. It adds 5,154 tokens to every session, about $0.0258 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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