johnxie · johnxie · Mar 21, 2026 · Mar 21, 2026
diff --git a/CONTENT_GAPS_ANALYSIS.md b/CONTENT_GAPS_ANALYSIS.md
@@ -6,8 +6,8 @@ This document tracks structural and quality gaps that impact completeness and di
 
 | Metric | Value |
 |:-------|:------|
-| Tutorial directories | 195 |
-| Tutorials with exactly 8 numbered chapters | 192 |
+| Tutorial directories | 201 |
+| Tutorials with exactly 8 numbered chapters | 198 |
 | Tutorials with >8 numbered chapters | 3 |
 | Tutorials with 0 numbered chapters | 0 |
 | Tutorials with partial chapter coverage (1-7) | 0 |
@@ -23,12 +23,12 @@ Top chapter-count tutorials:
 - `langchain-tutorial`: 9 numbered chapter files
 - `ag2-tutorial`: 9 numbered chapter files
 - `wshobson-agents-tutorial`: 8 numbered chapter files
+- `windmill-tutorial`: 8 numbered chapter files
 - `whisper-cpp-tutorial`: 8 numbered chapter files
 - `vllm-tutorial`: 8 numbered chapter files
 - `vibesdk-tutorial`: 8 numbered chapter files
 - `vibe-kanban-tutorial`: 8 numbered chapter files
 - `vercel-ai-tutorial`: 8 numbered chapter files
-- `use-mcp-tutorial`: 8 numbered chapter files
 
 ### 2) Index Format Variance
 

diff --git a/README.md b/README.md
@@ -210,6 +210,7 @@ Build autonomous AI systems that reason, plan, and collaborate.
 | **[Wshobson Agents](tutorials/wshobson-agents-tutorial/)** | 29.9K+ | TypeScript | Pluginized multi-agent workflows with specialist Claude Code agents |
 | **[MetaGPT](tutorials/metagpt-tutorial/)** | 66K+ | Python | Multi-agent framework with role-based collaboration (PM, Architect, Engineer) for software generation |
 | **[A2A Protocol](tutorials/a2a-protocol-tutorial/)** | 23K+ | Python/TypeScript | Google's Agent-to-Agent protocol for cross-platform agent interoperability and discovery |
+| **[OpenAI Agents](tutorials/openai-agents-tutorial/)** | 20K+ | Python | Official OpenAI multi-agent SDK with handoffs, guardrails, and streaming |
 
 ### 🧠 LLM Frameworks & RAG
 
@@ -231,6 +232,7 @@ Retrieval-augmented generation, model serving, and LLM tooling.
 | **[Semantic Kernel](tutorials/semantic-kernel-tutorial/)** | 23K+ | C#/Python | Microsoft's AI orchestration SDK |
 | **[Fabric](tutorials/fabric-tutorial/)** | 26K+ | Go/Python | AI prompt pattern framework |
 | **[Langflow](tutorials/langflow-tutorial/)** | 145K+ | Python/React | Visual AI agent and workflow platform with flow composition, APIs, and MCP deployment |
+| **[Crawl4AI](tutorials/crawl4ai-tutorial/)** | 62K+ | Python | LLM-friendly web crawler for RAG pipelines with markdown generation and structured extraction |
 
 ### 🖥️ LLM Infrastructure & Serving
 
@@ -370,6 +372,10 @@ AI coding assistants, build systems, and dev infrastructure.
 | **[Onlook](tutorials/onlook-tutorial/)** | 24.8K+ | TypeScript/React | Visual-first AI coding for Next.js and Tailwind with repo-backed edits |
 | **[Opcode](tutorials/opcode-tutorial/)** | 20.7K+ | TypeScript/Electron | GUI command center for Claude Code sessions, agents, and MCP servers |
 | **[Shotgun](tutorials/shotgun-tutorial/)** | 625+ | TypeScript | Spec-driven development workflows for large coding changes |
+| **[tldraw](tutorials/tldraw-tutorial/)** | 46K+ | TypeScript | Infinite canvas SDK with AI "make-real" feature for generating apps from whiteboard sketches |
+| **[Appsmith](tutorials/appsmith-tutorial/)** | 39K+ | TypeScript/Java | Low-code internal tool builder with drag-and-drop UI, 25+ data connectors, and Git sync |
+| **[Windmill](tutorials/windmill-tutorial/)** | 16K+ | TypeScript/Rust | Scripts to webhooks, workflows, and UIs — open-source Retool + Temporal alternative |
+| **[E2B](tutorials/e2b-tutorial/)** | 11K+ | Python/TypeScript | Secure cloud sandboxes for AI agent code execution with sub-200ms cold start |
 
 #### Memory, Skills & Context
 

diff --git a/TUTORIAL_STRUCTURE.md b/TUTORIAL_STRUCTURE.md
@@ -17,7 +17,7 @@ tutorials/<tutorial-name>/
 
 | Pattern | Count |
 |:--------|:------|
-| `root_only` | 195 |
+| `root_only` | 201 |
 | `docs_only` | 0 |
 | `index_only` | 0 |
 | `mixed` | 0 |

diff --git a/categories/ai-ml-platforms.md b/categories/ai-ml-platforms.md
@@ -171,6 +171,12 @@
 - [Plane](../tutorials/plane-tutorial/)
 - [MetaGPT](../tutorials/metagpt-tutorial/)
 - [A2A Protocol](../tutorials/a2a-protocol-tutorial/)
+- [Appsmith](../tutorials/appsmith-tutorial/)
+- [tldraw](../tutorials/tldraw-tutorial/)
+- [Windmill](../tutorials/windmill-tutorial/)
+- [Crawl4AI](../tutorials/crawl4ai-tutorial/)
+- [E2B](../tutorials/e2b-tutorial/)
+- [OpenAI Agents](../tutorials/openai-agents-tutorial/)
 
 ## Suggest Additions
 

diff --git a/discoverability/query-coverage.json b/discoverability/query-coverage.json
@@ -308,6 +308,22 @@
           ],
           "slug": "ollama-tutorial",
           "title": "Ollama Tutorial: Running and Serving LLMs Locally"
+        },
+        {
+          "file_url": "https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/crawl4ai-tutorial/README.md",
+          "intent_signals": [
+            "rag-implementation"
+          ],
+          "slug": "crawl4ai-tutorial",
+          "title": "Crawl4AI Tutorial: LLM-Friendly Web Crawling for RAG Pipelines"
+        },
+        {
+          "file_url": "https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/tldraw-tutorial/README.md",
+          "intent_signals": [
+            "rag-implementation"
+          ],
+          "slug": "tldraw-tutorial",
+          "title": "tldraw Tutorial: Infinite Canvas SDK with AI-Powered \"Make Real\" App Generation"
         }
       ]
     },

diff --git a/discoverability/query-hub.md b/discoverability/query-hub.md
@@ -2,7 +2,7 @@
 
 Auto-generated high-intent query landing surface mapped to the most relevant tutorials.
 
-- Total tutorials indexed: **195**
+- Total tutorials indexed: **201**
 - Query hubs: **6**
 - Source: `scripts/generate_discoverability_assets.py`
 
@@ -103,6 +103,10 @@ Recommended tutorials:
   - Deep technical walkthrough of Quivr Tutorial: Open-Source RAG Framework for Document Ingestion.
 - [Ollama Tutorial: Running and Serving LLMs Locally](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/ollama-tutorial/README.md)
   - Learn how to use ollama/ollama for local model execution, customization, embeddings/RAG, integration, and production deployment.
+- [Crawl4AI Tutorial: LLM-Friendly Web Crawling for RAG Pipelines](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/crawl4ai-tutorial/README.md)
+  - Deep technical walkthrough of Crawl4AI Tutorial: LLM-Friendly Web Crawling for RAG Pipelines.
+- [tldraw Tutorial: Infinite Canvas SDK with AI-Powered "Make Real" App Generation](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/tldraw-tutorial/README.md)
+  - Learn how to use tldraw/tldraw to build, customize, and extend an infinite canvas — from embedding the editor and creating custom shapes to integrating the "make-real" AI feature that generates working applications from whiteboard sketches.
 
 ## LLM Infrastructure and Serving
 

diff --git a/discoverability/search-intent-map.md b/discoverability/search-intent-map.md
@@ -2,7 +2,7 @@
 
 Auto-generated topical clusters to strengthen internal linking and query-to-tutorial mapping.
 
-- Total tutorials: **195**
+- Total tutorials: **201**
 - Total clusters: **9**
 - Source: `scripts/generate_discoverability_assets.py`
 
@@ -64,7 +64,7 @@ Auto-generated topical clusters to strengthen internal linking and query-to-tuto
 
 ## ai-coding-agents
 
-- tutorial_count: **87**
+- tutorial_count: **89**
 
 - [A2A Protocol Tutorial: Building Interoperable Agent Systems With Google's Agent-to-Agent Standard](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/a2a-protocol-tutorial/README.md)
   - intents: agentic-coding
@@ -116,7 +116,7 @@ Auto-generated topical clusters to strengthen internal linking and query-to-tuto
   - intents: agentic-coding
 - [Cline Tutorial: Agentic Coding with Human Control](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/cline-tutorial/README.md)
   - intents: agentic-coding
-- ... plus 62 more tutorials in this cluster
+- ... plus 64 more tutorials in this cluster
 
 ## data-and-storage
 
@@ -195,10 +195,12 @@ Auto-generated topical clusters to strengthen internal linking and query-to-tuto
 
 ## mcp-ecosystem
 
-- tutorial_count: **37**
+- tutorial_count: **39**
 
 - [Anthropic API Tutorial: Build Production Apps with Claude](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/anthropic-code-tutorial/README.md)
   - intents: production-operations, mcp-integration
+- [Appsmith Tutorial: Low-Code Internal Tools](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/appsmith-tutorial/README.md)
+  - intents: mcp-integration
 - [Awesome MCP Servers Tutorial: Curating and Operating High-Signal MCP Integrations](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/awesome-mcp-servers-tutorial/README.md)
   - intents: tool-selection, mcp-integration
 - [Cherry Studio Tutorial: Multi-Provider AI Desktop Workspace for Teams](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/cherry-studio-tutorial/README.md)
@@ -245,16 +247,16 @@ Auto-generated topical clusters to strengthen internal linking and query-to-tuto
   - intents: production-operations, mcp-integration
 - [MCP Rust SDK Tutorial: Building High-Performance MCP Services with RMCP](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/mcp-rust-sdk-tutorial/README.md)
   - intents: production-operations, mcp-integration
-- [MCP Servers Tutorial: Reference Implementations and Patterns](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/mcp-servers-tutorial/README.md)
-  - intents: production-operations, mcp-integration
-- ... plus 12 more tutorials in this cluster
+- ... plus 14 more tutorials in this cluster
 
 ## rag-and-retrieval
 
-- tutorial_count: **7**
+- tutorial_count: **9**
 
 - [ChromaDB Tutorial: Building AI-Native Vector Databases](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/chroma-tutorial/README.md)
   - intents: rag-implementation
+- [Crawl4AI Tutorial: LLM-Friendly Web Crawling for RAG Pipelines](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/crawl4ai-tutorial/README.md)
+  - intents: rag-implementation
 - [Haystack: Deep Dive Tutorial](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/haystack-tutorial/README.md)
   - intents: production-operations, architecture-deep-dive, rag-implementation
 - [LanceDB Tutorial: Serverless Vector Database for AI](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/lancedb-tutorial/README.md)
@@ -267,6 +269,8 @@ Auto-generated topical clusters to strengthen internal linking and query-to-tuto
   - intents: rag-implementation
 - [RAGFlow Tutorial: Complete Guide to Open-Source RAG Engine](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/ragflow-tutorial/README.md)
   - intents: rag-implementation
+- [tldraw Tutorial: Infinite Canvas SDK with AI-Powered "Make Real" App Generation](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/tldraw-tutorial/README.md)
+  - intents: rag-implementation
 
 ## systems-and-internals
 

diff --git a/discoverability/tutorial-directory.md b/discoverability/tutorial-directory.md
@@ -2,7 +2,7 @@
 
 This page is auto-generated from the tutorial index and is intended as a fast browse surface for contributors and search crawlers.
 
-- Total tutorials: **195**
+- Total tutorials: **201**
 - Source: `scripts/generate_discoverability_assets.py`
 
 ## A
@@ -33,6 +33,8 @@ This page is auto-generated from the tutorial index and is intended as a fast br
   - Build and operate production-quality skills for Claude Code, Claude.ai, and the Claude API.
 - [AnythingLLM Tutorial: Self-Hosted RAG and Agents Platform](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/anything-llm-tutorial/README.md)
   - Learn how to deploy and operate Mintplex-Labs/anything-llm for document-grounded chat, workspace management, agent workflows, and production use.
+- [Appsmith Tutorial: Low-Code Internal Tools](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/appsmith-tutorial/README.md)
+  - Open-source low-code platform for building internal tools with drag-and-drop UI, 25+ database integrations, JavaScript logic, and Git sync.
 - [Athens Research: Deep Dive Tutorial](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/athens-research-tutorial/README.md)
   - Athens Research — An open-source, Roam-like knowledge management system built with ClojureScript and graph databases.
 - [AutoAgent Tutorial: Zero-Code Agent Creation and Automated Workflow Orchestration](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/autoagent-tutorial/README.md)
@@ -111,6 +113,8 @@ This page is auto-generated from the tutorial index and is intended as a fast br
   - A practical guide to continuedev/continue, covering IDE usage, headless/CLI workflows, model configuration, team collaboration, and enterprise operations.
 - [CopilotKit Tutorial: Building AI Copilots for React Applications](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/copilotkit-tutorial/README.md)
   - Create in-app AI assistants, chatbots, and agentic UIs with the open-source CopilotKit framework.
+- [Crawl4AI Tutorial: LLM-Friendly Web Crawling for RAG Pipelines](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/crawl4ai-tutorial/README.md)
+  - Deep technical walkthrough of Crawl4AI Tutorial: LLM-Friendly Web Crawling for RAG Pipelines.
 - [Create Python Server Tutorial: Scaffold and Ship MCP Servers with uvx](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/create-python-server-tutorial/README.md)
   - Learn how to use modelcontextprotocol/create-python-server to scaffold Python MCP servers with minimal setup, template-driven primitives, and publish-ready packaging workflows.
 - [Create TypeScript Server Tutorial: Scaffold MCP Servers with TypeScript Templates](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/create-typescript-server-tutorial/README.md)
@@ -137,6 +141,8 @@ This page is auto-generated from the tutorial index and is intended as a fast br
 
 ## E
 
+- [E2B Tutorial: Secure Cloud Sandboxes for AI Agent Code Execution](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/e2b-tutorial/README.md)
+  - Learn how to use e2b-dev/E2B to give AI agents secure, sandboxed cloud environments for code execution with sub-200ms cold starts.
 - [ElizaOS: Deep Dive Tutorial](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/elizaos-tutorial/README.md)
   - ElizaOS — Autonomous agents for everyone.
 - [Everything Claude Code Tutorial: Production Configuration Patterns for Claude Code](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/everything-claude-code-tutorial/README.md)
@@ -320,6 +326,8 @@ This page is auto-generated from the tutorial index and is intended as a fast br
   - Learn from langchain-ai/open-swe architecture, workflows, and operational patterns, including how to maintain or migrate from a deprecated codebase.
 - [Open WebUI Tutorial: Self-Hosted AI Workspace and Chat Interface](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/open-webui-tutorial/README.md)
   - Learn how to run and operate open-webui/open-webui as a self-hosted AI interface with model routing, RAG workflows, multi-user controls, and production deployment patterns.
+- [OpenAI Agents Tutorial: Building Production Multi-Agent Systems](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/openai-agents-tutorial/README.md)
+  - Production Successor to Swarm: The OpenAI Agents SDK brings Swarm's lightweight agent-handoff philosophy into a production-grade framework with built-in tracing, guardrails, and streaming.
 - [OpenAI Python SDK Tutorial: Production API Patterns](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/openai-python-sdk-tutorial/README.md)
   - Learn how to build reliable Python integrations with openai/openai-python using Responses-first architecture, migration-safe patterns, and production operations.
 - [OpenAI Realtime Agents Tutorial: Voice-First AI Systems](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/openai-realtime-agents-tutorial/README.md)
@@ -435,6 +443,8 @@ This page is auto-generated from the tutorial index and is intended as a fast br
   - Teable — A high-performance, multi-dimensional database platform built on PostgreSQL with real-time collaboration.
 - [tiktoken Tutorial: OpenAI Token Encoding & Optimization](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/tiktoken-tutorial/README.md)
   - Master tiktoken, OpenAI's fast BPE tokenizer, to accurately count tokens, optimize prompts, and reduce API costs.
+- [tldraw Tutorial: Infinite Canvas SDK with AI-Powered "Make Real" App Generation](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/tldraw-tutorial/README.md)
+  - Learn how to use tldraw/tldraw to build, customize, and extend an infinite canvas — from embedding the editor and creating custom shapes to integrating the "make-real" AI feature that generates working applications from whiteboard sketches.
 - [Turborepo Tutorial: High-Performance Monorepo Build System](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/turborepo-tutorial/README.md)
   - A deep technical walkthrough of Turborepo covering High-Performance Monorepo Build System.
 
@@ -458,5 +468,7 @@ This page is auto-generated from the tutorial index and is intended as a fast br
 
 - [Whisper.cpp Tutorial: High-Performance Speech Recognition in C/C++](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/whisper-cpp-tutorial/README.md)
   - A deep technical walkthrough of Whisper.cpp covering High-Performance Speech Recognition in C/C++.
+- [Windmill Tutorial: Scripts to Webhooks, Workflows, and UIs](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/windmill-tutorial/README.md)
+  - Turn scripts into production-ready webhooks, workflows, and internal tools with Windmill -- the open-source alternative to Retool + Temporal.
 - [Wshobson Agents Tutorial: Pluginized Multi-Agent Workflows for Claude Code](https://github.com/johnxie/awesome-code-docs/blob/main/tutorials/wshobson-agents-tutorial/README.md)
   - Learn how to use wshobson/agents to install focused Claude Code plugins, coordinate specialist agents, and run scalable multi-agent workflows with clear model and skill boundaries.