Hi! I’m Charles Oduk, a Software Engineer and Twilio Champion based in the UK. I help teams design and ship agentic AI systems, and I'm the founder of AccessTrail.
Owl Food Support: a TypeScript foodbank agent on Twilio Agent Connect that works over voice and WhatsApp, remembers household details in Conversation Memory traits, runs an eligibility check, books a real collection slot, hands messy cases to a human queue, and ships with prompt evals that check it keeps its promises.
A production story from a WhatsApp course delivery platform: why an autoscaling platform and a per-instance connection pool are a trap, how the failure showed up, and the changes that fixed it for good.
Lessons from building a RAG assistant over a founders knowledge base at Acumen Academy: a tree-based retrieval structure driven by Contentful metadata, a keyword layer that answers lookups without touching a model, and a pre-warmed cache for the documents everyone asks about.
I wrote a tutorial for the Twilio blog on building a WhatsApp fact-checking bot. The tutorial answers every message with a fresh LLM call. The real bot does not, and this post explains the three-tier pipeline that keeps it fast and affordable.