What is fugle-mcp-server CLAUDE.md?

Repository instructions for a Fugle MCP server that provides Taiwan stock-market data, trading operations, and company analysis through the Model Context Protocol.

Use them when developing market-data, account, trading, or fundamental-analysis features for the server.

They describe the supported trading SDKs, shared architecture, development commands, and project structure so changes fit the existing design.

How fugle-dev/fugle-mcp-server configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to fugle-dev/fugle-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/fugle-dev/fugle-mcp-server/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/fugle-dev/fugle-mcp-server

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/fugle-dev/fugle-mcp-server/claude-md/github.svg)](https://agentmods.dev/instructions/fugle-dev/fugle-mcp-server/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/fugle-dev/fugle-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/fugle-dev/fugle-mcp-server/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/fugle-dev/fugle-mcp-server/claude-md"><img src="https://agentmods.dev/badge/instructions/fugle-dev/fugle-mcp-server/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 595 This file is loaded in full into every session.

When invoked 595 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	$0.00595	$0.00595
Opus 5.5	$0.00238	$0.00238
Sonnet 5.5	$0.00119	$0.00119
Haiku 4.5	$0.00060	$0.00060

Measured 2mo ago against content hash ec8bb8bceef5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fugle-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 · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 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

This is a Fugle MCP (Model Context Protocol) Server for Taiwan stock market operations. The server supports two different trading platforms:

Taishin SDK (default)
Fubon Neo SDK

The server provides stock market data, trading functionality, and fundamental analysis tools through MCP protocol.

Architecture

The codebase follows a modular architecture with SDK abstraction:

src/index.ts - Main server entry point with environment validation
src/config.ts - Configuration management for SDK selection
src/shared/ - Common utilities and abstractions:
- factory/ - SDK abstraction layer with unified interfaces
- marketdata/ - Market data tools (intraday, historical, snapshots)
- fundamental/ - Company analysis tools via Fugle API
src/taishin/ - Taishin SDK specific implementations
src/fubon/ - Fubon SDK specific implementations

Each SDK implementation provides:

account/ - Account management tools
trade/ - Trading operations
Shared market data tools through the factory pattern

Development Commands

# Build the project
npm run build

# Watch mode for development
npm run watch

# Test with MCP inspector
npm run inspector

# Run the server directly
node build/index.js

SDK Configuration

The server uses SDK_TYPE environment variable to switch between trading platforms:

taishin (default) - Uses Taishin SDK
fubon - Uses Fubon Neo SDK

Both SDKs are abstracted through the factory pattern in src/shared/factory/ to provide unified interfaces for market data operations.

Required Environment Variables

NATIONAL_ID - Taiwan National ID
ACCOUNT_PASS - Trading account password
CERT_PASS - Certificate password
CERT_PATH - Path to certificate file (defaults to /app/cert.p12)
SDK_TYPE - SDK selection (taishin or fubon)
ENABLE_ORDER - Enable trading functionality (default: false)
ACCOUNT - Specific account selection for multi-account users
FUBON_URL - Fubon SDK connection URL (optional, fubon only)
FUGLE_API_URL - Fugle API base URL override (optional, defaults to https://www.fugle.tw/api/v2)

Read the full file on GitHub · 73 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 · 73 lines · 595 tokens per session scan A ec8bb8bceef5

Subscribe to this mod's changes

fugle-mcp-server CLAUDE.md is an instructions file published in the GitHub repository fugle-dev/fugle-mcp-server (10 stars, last pushed 14d ago), licensed MIT. It adds 595 tokens to every session, about $0.0024 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.

Backend and APIs Finance and fintech

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fugle-mcp-server: Instructions file for Claude Code