What is CasualMarket CLAUDE.md?

A repository instruction file for CasualMarket, a server that provides current prices for shares listed on Taiwan’s stock exchange. It explains how to run and test the server locally, in Claude Desktop or in Docker.

It helps maintain stock-price queries, caching, rate limiting and financial analysis across local, desktop and container deployments.

It gives contributors the project overview and the exact commands needed to develop, test and operate the server.

How sacahan/CasualMarket configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to sacahan/CasualMarket. 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/sacahan/CasualMarket/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/sacahan/CasualMarket

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/sacahan/casualmarket/claude-md/github.svg)](https://agentmods.dev/instructions/sacahan/casualmarket/claude-md)

Your own site

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

Per session 3,482 This file is loaded in full into every session.

When invoked 3,482 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	$0.03482	$0.03482
Opus 5	$0.01741	$0.01741
Sonnet 5	$0.00696	$0.00696
Haiku 4.5	$0.00348	$0.00348

Measured 10d ago against content hash 1d6e73988478, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

CasualMarket 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 10d 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 · 396 lines

How it starts

The opening of the file, as written. The whole thing — 396 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

CasualMarket is a Taiwan Stock Exchange MCP (Model Context Protocol) Server that provides real-time stock price queries for Taiwan securities. It uses FastMCP framework for simplified MCP tool registration and includes intelligent rate limiting, caching, and financial analysis features.

Development Commands

Server Execution

CasualMarket supports two deployment modes:

stdio mode: Local development and Claude Desktop integration
Docker + SSE mode: Containerized deployment with HTTP interface

Production Execution

# stdio mode (local/desktop)
uvx --from . casual-market-mcp

# Docker mode (SSE HTTP interface)
docker-compose up -d

Development Execution (Recommended for Active Development)

# Development mode - direct execution avoids uvx cache issues
uv run python -m src.main

# Quick functionality test
uv run python tests/api/demo_enhanced_client.py

Cache Management

# Clear uvx cache when needed (production deployment)
uv cache clean

# Development mode automatically uses latest code
# No cache clearing needed when using uv run

Docker Deployment

# Pull and start container (recommended)
./scripts/docker-run.sh pull
./scripts/docker-run.sh up

# Or build locally
./scripts/docker-run.sh build
DOCKER_IMAGE_NAME=casualmarket-mcp:latest ./scripts/docker-run.sh up

# View logs
./scripts/docker-run.sh logs

# Test service
./scripts/docker-run.sh test

# Stop and remove container
./scripts/docker-run.sh down

# Multi-platform build and push to Docker Hub
./scripts/build_docker.sh --platform all --action build-push

Docker Endpoints:

Root: http://localhost:8000/
Health: http://localhost:8000/health
SSE: http://localhost:8000/sse (MCP protocol)
Docs: http://localhost:8000/docs

Quick Commands:

# View service info
./scripts/docker-run.sh info

# Enter container shell
./scripts/docker-run.sh shell

# Restart service
./scripts/docker-run.sh restart

# Complete cleanup
./scripts/docker-run.sh clean

Read the full file on GitHub · 396 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.

10d ago First seen · 396 lines · 3,482 tokens per session scan A 1d6e73988478

Subscribe to this mod's changes

CasualMarket CLAUDE.md is an instructions file published in the GitHub repository sacahan/CasualMarket (31 stars, last pushed 9mo ago), licensed MIT. It adds 3,482 tokens to every session, about $0.0174 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.

Finance and fintech mcp-server quantitative taiwan-stock trading twse

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CasualMarket: Instructions file for Claude Code