What is banking-mcp-server CLAUDE.md?

Project-specific instructions for an AI coding assistant working on a retail banking application that lets an AI client use banking tools through the Model Context Protocol (MCP). They describe the project’s design, technologies, setup, and file layout.

Setting up, understanding, and developing the banking MCP server and client, including its Python environment, database initialization, and communication setup.

They give the assistant the context needed to work consistently in the repository instead of guessing how the banking server, client, and SQLite database fit together.

How Aswin922/banking-mcp-server configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Aswin922/banking-mcp-server. 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/Aswin922/banking-mcp-server/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/Aswin922/banking-mcp-server

Made for: Claude Code.

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README.md

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Per session 1,785 This file is loaded in full into every session.

When invoked 1,785 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.

Model	Per session	Once invoked
Fable 5.1	$0.01785	$0.01785
Opus 5.5	$0.00714	$0.00714
Sonnet 5.5	$0.00357	$0.00357
Haiku 4.5	$0.00178	$0.00178

Measured 2mo ago against content hash b796eef94e35, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

banking-mcp-server 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 2mo 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 · 250 lines

How it starts

The opening of the file, as written. The whole thing — 250 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Retail Banking MCP Server & Client - A 2-3 day hackathon lab project that implements an MCP (Model Context Protocol) based Banking Assistant. The system allows an AI client to interact with a banking platform through an MCP server that exposes banking capabilities as discoverable tools.

Architecture Flow

MCP Host → MCP Client → MCP Server → SQLite Database

Technology Stack

Server: Python + MCP SDK
Client: Claude Desktop / VS Code / Custom implementation
Database: SQLite with 4 core tables
Transport: STDIO (required), HTTP (bonus)

Setup and Development

Initial Setup

# Create virtual environment
python -m venv venv

# Activate virtual environment (Windows)
venv\Scripts\activate

# Install MCP SDK and dependencies
pip install mcp anthropic python-dotenv

# Install SQLite (already available with Python)
# Initialize database
python src/database/init_db.py

Project Structure

Banking_Assistant/
├── src/
│   ├── mcp_server/
│   │   ├── __init__.py
│   │   ├── server.py           # Main MCP server implementation
│   │   ├── tools.py            # 6 MCP tools
│   │   ├── resources.py        # MCP resources (min 3)
│   │   └── prompts.py          # MCP prompts (3)
│   ├── database/
│   │   ├── __init__.py
│   │   ├── init_db.py          # Schema creation & seeding
│   │   ├── models.py           # Database models
│   │   └── operations.py       # CRUD operations
│   ├── client/
│   │   ├── __init__.py
│   │   └── mcp_client.py       # MCP client implementation
│   └── utils/
│       ├── __init__.py
│       └── validators.py       # Input validation
├── data/
│   └── banking.db              # SQLite database
├── tests/
│   ├── test_tools.py
│   ├── test_database.py
│   └── test_integration.py
├── demo/
│   └── walkthrough.py          # End-to-end demo script
├── docs/
│   └── architecture.md         # Architecture diagram
├── requirements.txt
├── README.md
└── CLAUDE.md

Read the full file on GitHub · 250 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.

2mo ago First seen · 250 lines · 1,785 tokens per session scan A b796eef94e35

Subscribe to this mod's changes

banking-mcp-server CLAUDE.md is an instructions file published in the GitHub repository Aswin922/banking-mcp-server (0 stars, last pushed 3mo ago), licensed MIT. It adds 1,785 tokens to every session, about $0.0071 per session on Opus 5.5. 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 2026-08-31.

ai-tools banking claude fintech mcp

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banking-mcp-server: Instructions file for Claude Code