Evaluate, Control Cost, and Ship
Over seven parts, Nimbus has gone from a chatbot that could only talk to an…
Guardrails and Human Approval
Nimbus can now read orders, check policies, search documents, open tickets and remember conversations. It's…
Memory: Conversations That Remember
Here's a perfectly normal support conversation: Customer: Can I get a refund for order #1043?…
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,…
From Answering to Acting: What Makes an AI Agent
A customer opens the Nimbus chat window and types: "Hi, I bought the Pro annual…
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…