Raul GuiuStaff Software Engineer. Building AI developer tools. 25+ years across Amazon, VISA, Betfair, and fintech.https://rguiu.github.io/Inside AI Agent Profiler: The Trace Engine That Sees Every Bytehttps://rguiu.github.io/projects/aap-trace-engine/https://rguiu.github.io/projects/aap-trace-engine/How AI Agent Profiler captures wire-speed NDJSON traces, parses four incompatible streaming formats into SQLite, and reveals that 80% of LLM traffic is the agent talking to itself.Sat, 25 Jul 2026 00:00:00 GMTHow Claude Code talks to the APIhttps://rguiu.github.io/projects/aap-claude-messages/https://rguiu.github.io/projects/aap-claude-messages/The hidden API traffic driving your coding agent: the 9 request kinds, Claude's explicit cache system, the 5-minute TTL, and why most token-saving tricks fail.Fri, 24 Jul 2026 00:00:00 GMTBuilding a transparent LLM proxy: architecture of ai-agent-profilerhttps://rguiu.github.io/projects/aap-architecture/https://rguiu.github.io/projects/aap-architecture/How the proxy intercepts, classifies, traces, and optimizes every API call between your coding agent and the LLM provider. With a diagram of the request pipeline.Wed, 22 Jul 2026 00:00:00 GMTstackpilothttps://rguiu.github.io/projects/stackpilot/https://rguiu.github.io/projects/stackpilot/A lean coding agent rebuilt from recorded Claude Code traces. Client-side cache prediction, 14 tools, auto-compaction, Bedrock support.Sat, 18 Jul 2026 00:00:00 GMTai-agent-profilerhttps://rguiu.github.io/projects/ai-agent-profiler/https://rguiu.github.io/projects/ai-agent-profiler/Local-first profiler + optimizer for AI coding agents. Transparent proxy, trace capture, MCP server, FTS5 search, cost optimization (-66% demonstrated).Sun, 12 Jul 2026 00:00:00 GMTarmada-aihttps://rguiu.github.io/projects/armada-ai/https://rguiu.github.io/projects/armada-ai/Persistent sessions and live supervision for coding agents. tmux-based persistence, FastAPI web dashboard, MCP-native agent skills, multi-agent orchestration.Sat, 30 May 2026 00:00:00 GMTpgleasehttps://rguiu.github.io/projects/pglease/https://rguiu.github.io/projects/pglease/Distributed task coordination for Python using PostgreSQL. Leader election, heartbeat leases, hybrid backend for sub-second failover, async support.Sat, 04 Apr 2026 00:00:00 GMT