Debugging Claude Code Agents: Fixing Loops & Bad Tool Calls
Hackathon lessons on debugging Claude Code agents on Opus 4.8 — fixing loops, wrong tool calls, and hallucinated arguments with transcript-first triage.
Agentic AI, LLM engineering, and the models behind modern automation — multi-agent systems, LLM evaluation and comparisons, RAG, fine-tuning, AI infrastructure, security, and production AI engineering.
From the blog
Hackathon lessons on debugging Claude Code agents on Opus 4.8 — fixing loops, wrong tool calls, and hallucinated arguments with transcript-first triage.
What to put in a Claude agent's context and what to leave out, and why — context engineering rules from a Built-with-Opus hackathon.
Auth, schemas, error handling, and idempotency for wiring tools and MCP servers into Claude Code agents — lessons from a Built-with-Opus hackathon.
Code-level patterns from a Built-with-Opus hackathon: contract prompts, typed tools, tiered context, plan-then-act, and structured errors.
An hour-by-hour walkthrough of building a working Claude Code agent at a Built-with-Opus hackathon: scaffold, loop, tools, skills, and ship.
How a Built-with-Opus hackathon agent fit together end to end: driver loop, context store, tool layer, skills, and orchestrator explained.
A concrete day-by-day 7-day launch playbook for CallSphere, plus what is actually shipping in the same 7 days for a Vapi customer (still wiring vendors).
Model Context Protocol gave Claude Code superpowers. Code-Review-Graph gave it a memory. Here are the 28 MCP tools that turn your editor into a real agentic IDE.
User-tested call quality comparison of CallSphere vs Vapi in 2026 — interrupt handling, accent robustness, turn-taking, and hangup behavior scored.