LlamaIndex vs LangChain: which framework for RAG and agents?

LlamaIndex or LangChain? The right answer in 2026 is usually both -- LlamaIndex as the retrieval layer, LangGraph as the orchestration layer. Here is how to decide.

AI-SEO Page Auditor Chrome Extension

The AI-SEO Page Auditor Chrome extension runs 43 AI-readiness checks on any page you are browsing. Letter grade in the toolbar badge, results cached per URL, no sign-up required.

Automate social media posting with n8n: full workflow walkthrough

Build one n8n workflow that reads a Google Sheets queue and posts to all four major platforms -- including the Instagram two-step container trick and Meta token renewal.

LangChain vs LangGraph: when to use each for AI agents

LangChain is for linear pipelines. LangGraph is for agents that loop, checkpoint state, and wait for human approval. Here is the exact decision criteria.

n8n Code node: how to install and use external npm packages

Allowlist and install external npm packages for the n8n Code node - including the n8n 2.x task-runner gotcha most guides skip.

How to fix n8n nested loops: the inner loop retains completed state bug

The inner Loop Over Items node skips processing after the first outer iteration because it retains its completed state. Here are the three fixes, including the Done-branch chain pattern that avoids the bug entirely.

Fix 'claude mcp add: unknown option --command' in the Claude Code CLI

No --command flag exists. Use -- to pass the command: claude mcp add myserver -- npx -y server. All options go before the server name.

Send automated emails with n8n: SMTP, Gmail, and templates

Set up Gmail SMTP credentials, build HTML templates with dynamic data, and wire the Send Email node into any n8n workflow.

Add AI to your Zapier workflows: a practical 2026 guide

Two built-in ways to add AI steps to any Zap -- AI by Zapier (no API key needed) and the ChatGPT integration -- with task cost breakdown, action types, and four practical workflow patterns.

Per-node n8n execution debugging with Claude: patterns and pitfalls

Three silent n8n execution failures -- Filter node drops, missing AI Agent Chat Model, and inactive webhook -- plus how to use Claude and the n8n MCP to diagnose them in plain language.