Posted inAgentic RAG AI & LLMs AI Agents in PHP Series Chatbots & Support Bots MySQL & Databases PHP Tutorials Retrieval-Augmented Generation
RAG + Tools Together
Ask the Part 4 version of Nimbus this: "I was charged twice for order #1043.…
Posted inAgent Loop AI & LLMs AI Agents in PHP Series Chatbots & Support Bots MySQL & Databases PHP Tutorials
The Agent Loop: Thinking in Steps
At the end of Part 3, Nimbus got close. A customer asked for a refund…
Posted inAI & LLMs AI Agents in PHP Series Chatbots & Support Bots MySQL & Databases PHP Tutorials Prompt Engineering Tool Design
Giving Nimbus Its First Real Tools
After Part 2, Nimbus can look up an order through real tool calling. That's useful,…
Posted inAI & LLMs AI Agents in PHP Series Chatbots & Support Bots MySQL & Databases PHP Tutorials Tool Calling
Tool Calling in Plain PHP
In Part 1, our mini agent worked because we asked nicely: "Reply with JSON only,…
Posted inAI & LLMs Local News RAG - Prompts PHP Tutorials Prompt Engineering RAG Tutorial Series Retrieval-Augmented Generation
Bonus 2 — Local News RAG: Recency-Aware Answers & Multi-Source Citations
The last piece Bonus 1 left us able to fetch, dedup, and retrieve today's news.…
Posted inChatbots & Support Bots Local News RAG - Build MySQL & Databases PHP Tutorials RAG Tutorial Series Retrieval-Augmented Generation
Bonus 1 — Local News RAG: Pointing the Pattern at Live Data
Same skeleton, live target You just built a support bot over static documents. This bonus…
Posted inAI & LLMs Evaluation & Deployment PHP Tutorials RAG Tutorial Series Retrieval-Augmented Generation
Episode 8 — Evaluating & Shipping
From "seems good" to "measurably good" to "live" For two episodes I've been repeating the…
Posted inEmbeddings & Vector Search Hybrid Search & Guardrails PHP Tutorials Prompt Engineering RAG Tutorial Series Retrieval-Augmented Generation
Episode 7 — Improving Quality: Hybrid Search, Reranking & Guardrails
"Works on my questions" isn't "works" Episode 6 gave us a real, grounded, cited bot.…
Posted inAI & LLMs Grounded Generation PHP Tutorials Prompt Engineering RAG Tutorial Series Retrieval-Augmented Generation
Episode 6 — Generation: Grounded Answers with Citations
The last mile Five episodes of groundwork come together here. We can load documents, chunk…
Posted inAI & LLMs PHP Tutorials RAG Tutorial Series Retrieval Tuning Retrieval-Augmented Generation
Episode 5 — Retrieval: Top-K, Thresholds & Filtering
Our search is fast, but it isn't smart After Episode 4, MySQL ranks our chunks…