Open Source

Open Source Projects

Open source is a core part of modern software innovation. At Call O Buzz Services, we actively build and maintain open source projects that reflect our engineering standards and architectural thinking.

Featured Project

COB Shopify MCP

Production-Grade MCP Server & CLI for AI-Powered Shopify Store Management

A dual-mode tool that works as both an MCP server for AI agents (Claude, Cursor, Windsurf) and a standalone CLI for Shopify store management. 49 tools across 5 domains bridge the Shopify Admin GraphQL API with AI platforms — from product management to analytics.

View on GitHubnpm install
Open Source License
COB Shopify MCP - UI Screenshot

Key Features

49 Tools, 5 Domains

Products, Orders, Customers, Inventory, and Analytics — full Shopify store coverage via GraphQL

Dual-Mode: MCP + CLI

Use as an MCP server for AI agents or as a standalone CLI — no MCP required for terminal workflows

3-Tier Tool System

Tier 1 safe tools enabled by default, Tier 2 sensitive ops opt-in, Tier 3 custom YAML definitions

Type-Safe & Validated

Full TypeScript with Zod v4 schemas for runtime validation across every tool input and output

Cost Tracking & Rate Limiting

Respects Shopify's 1000-point budget with cost-based throttling, caching, and exponential backoff

3 Auth Methods & Transports

Static token, OAuth client credentials, or OAuth auth code. stdio and Streamable HTTP transports

15
Products Tools
12
Orders Tools
9
Customer Tools
7
Inventory Tools
6
Analytics Tools

Architecture Highlights

    Auto-discovers tool definitions via glob patterns — no manual registration
    MCP Resources: Shop Info, Locations, Currencies, and Store Policies
    MCP Prompts: Store Health Check, Daily Sales Report, Inventory Risk Analysis, Customer Support Summary
    Multi-layer caching with configurable TTL per query type
    Comprehensive audit trails with pino structured logging
    Docker and Docker Compose support for HTTP server deployment
    Read-only mode available for safe exploration
    Config via YAML file, environment variables, or CLI flags

Technologies Used

TypeScriptNode.jsMCP ProtocolShopify GraphQL APIZod v4cittyconsolapinoDocker

Use Cases

AI Sales AssistantsSupport BotsWarehouse ManagementShipping TrackingBusiness IntelligenceAutomation PipelinesMulti-Agent Systems

Production-Ready Architecture

Built with a layered architecture — Auth Manager, Rate Limiter, Cache Layer, and Retry Engine work together to ensure reliable, cost-efficient communication with Shopify's API. Every request is validated, throttled, cached, and audited.

More Open Source Projects

COB Claude Meter - Screenshot

COB Claude Meter

MIT

CLI Tool for Claude Code Token Usage Tracking & Cost Estimation

Know exactly what your Claude Code usage costs. Track tokens across Opus, Sonnet, and Haiku, estimate costs with exact cache breakdowns, monitor usage in real-time — all from your terminal. Features live watch mode, Claude Code statusline integration, and JSON output. 100% local, zero config, cross-platform.

TypeScriptNode.jsCommanderChalkClaude Code
View on GitHub
COB Gifomatic - Screenshot

COB Gifomatic

MIT

Automatic Video to GIF Converter with Intelligent Scene Detection

A web application that automatically splits videos into GIFs using intelligent scene detection. Upload a video, and the app detects scene changes, splits into clips, and converts each to a GIF in real-time.

PythonFlaskFFmpegPySceneDetectHTML5CSS3+3 more
View on GitHub

More Projects Coming Soon

We're actively building new open source tools across AI, developer tooling, and automation. Every project we release reflects our commitment to:

Clean Code
Good Documentation
Real-World Usability
Community First

Interested in Collaborating?

We're always open to collaboration on meaningful open source projects.

Get in Touch