Tutorial

Why OpenBB? When using commercial financial data APIs (like TwelveData), you often encounter these issues: Rate limits: Daily caps on API calls (e.g., 800/day) Limited data coverage: No support for crypto or macroeconomic data Cost concerns: Paid upgrades required for high-frequency usage Vendor lock-in: Data formats and API designs tied to specific providers OpenBB is an open-source financial data platform that provides a “connect once, consume everywhere” solution. Core Advantages of OpenBB Feature OpenBB Commercial API (TwelveData) Cost Free & Open Source Limited free tier Data Sources Multi-source aggregation (yfinance, FRED, etc.) Single source Cryptocurrency ✅ Supported ❌ Not supported Macroeconomics ✅ Supported (OECD, FRED) ❌ Not supported Technical Indicators ✅ Built-in calculation Manual calculation Vendor Lock-in ❌ None ✅ Strong dependency Environment Setup This guide is based on the following environment: ...

为什么需要 OpenBB？ 在使用商业金融数据 API（如 TwelveData）时，我们经常会遇到以下问题： 免费额度限制：800次/天的调用上限 数据覆盖有限：不支持加密货币、宏观经济数据 成本问题：高频使用需要付费升级 供应商锁定：数据格式和 API 设计依赖特定供应商 OpenBB 是一个开源的金融数据平台，提供了"连接一次，到处消费"的解决方案。 ...

Why Do AI Agents Need Schedule Management? When you ask your AI agent “What’s on my schedule today?” or “Create a meeting for tomorrow at 3 PM,” it should execute accurately, not say “I don’t know.” A complete AI agent schedule system should have: 📅 Read schedules - Know what’s happening today and tomorrow ⏰ Timely reminders - Push notifications at the right time 📝 Task tracking - Manage to-do items and completion status 🤖 Proactive creation - AI can create new events and tasks for you 🔄 Multi-device sync - Accessible from phone, computer, and AI assistant But choosing the right solution isn’t easy—network environment, configuration complexity, and usage habits all affect the decision. ...

为什么 AI 助手需要日程管理？ 当你问 AI 助手 “今天有什么安排？” 或 “帮我创建一个明天下午 3 点的会议” 时，它应该能准确执行，而不是说 “我不知道”。 ...

前言 在使用 OpenClaw 的过程中，我们不可避免地会接触到各种 API 密钥：Discord Bot Token、Kimi API Key、GitHub PAT 等。这些密钥如果明文存储在配置文件中，存在严重的安全隐患。 ...

The Use Case You have files in Google Drive but need them accessible locally: Edit documents with local tools Backup local files to cloud Sync across multiple machines Access without browser Rclone is the best tool for this. It’s like rsync for cloud storage. Installation Option 1: Package Manager # Debian/Ubuntu sudo apt install rclone # macOS brew install rclone # Arch sudo pacman -S rclone Option 2: Install Script curl https://rclone.org/install.sh | sudo bash Verify installation: ...

The Problem My AI assistant (OpenClaw) had a memory problem. Every restart, it started fresh. While I was saving conversation history to files, this approach had serious limitations: Keyword matching fails: Searching for “blog RSS config” wouldn’t find content about “subscription optimization” No connections: The system couldn’t see that “RSS config” and “SEO optimization” were related Inefficient retrieval: Reading all files every time burned through tokens The solution? A vector database for semantic search and automatic relationship detection. ...

Introduction Today I spent about 8 hours building this blog from scratch. This post documents the complete process, including technology choices, pitfalls encountered, and their solutions. Hope this helps anyone looking to build their own blog. Tech Stack Overview Hugo - Static Site Generator Hugo is a static site generator written in Go, marketed as “the world’s fastest static site generator.” Pros: ⚡ Lightning-fast builds (thousands of pages per second) 🎨 Rich theme ecosystem (300+ official themes) 📝 Native Markdown support 🔧 Single binary deployment Cons: ...

What We’re Building An AI assistant that lives in your Discord server—capable of answering questions, running tasks, and integrating with your workflows. What you’ll need: A Discord account A server where you’re admin About 15 minutes Step 1: Create a Discord Bot 1.1 Access the Developer Portal Go to Discord Developer Portal Click “New Application” Name it (e.g., “MyAIAssistant”) Accept the terms 1.2 Enable Bot Functionality In your app, go to “Bot” section (left sidebar) Click “Add Bot” Confirm with “Yes, do it!” 1.3 Get Your Token Critical: The bot token is like a password. Never share it or commit it to git. ...