RAG + Tools Together
Ask the Part 4 version of Nimbus this: "I was charged twice for order #1043.…
The Agent Loop: Thinking in Steps
At the end of Part 3, Nimbus got close. A customer asked for a refund…
Giving Nimbus Its First Real Tools
After Part 2, Nimbus can look up an order through real tool calling. That's useful,…
Tool Calling in Plain PHP
In Part 1, our mini agent worked because we asked nicely: "Reply with JSON only,…
Posted inAI & LLMs PHP Tutorials RAG Tutorial Series
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.…
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 PHP Tutorials RAG Tutorial Series
Episode 8 — Evaluating & Shipping
From "seems good" to "measurably good" to "live" For two episodes I've been repeating the…
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 PHP Tutorials RAG Tutorial Series
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
Episode 5 — Retrieval: Top-K, Thresholds & Filtering
Our search is fast, but it isn't smart After Episode 4, MySQL ranks our chunks…