HGHarrison Guoinharrisonsec.hashnode.dev·Jun 16 · 22 min readAgent Architecture Is a Compute Allocation Problem: The Advisor Strategy, Cost-Curve Frame RecursedIn April 2026, Anthropic published a blog post called "The advisor strategy: Give agents an intelligence boost", naming a pattern they had been A/B-testing in production: a cheaper model runs the agen00
HGHarrison Guoinharrisonsec.hashnode.dev·Jun 8 · 26 min readAgent Retrieval Above the Crossover: A First-Principles Read of CodeGraphThe prior post in this series, Agent Retrieval Is a Cost Curve Problem, argued that a viable LLM-symbol-graph would need to satisfy six specific conditions — and that no existing tool had hit all six.00
HGHarrison Guoinharrisonsec.hashnode.dev·Jun 1 · 18 min readI Tested CodeGraph on Hono. The Tool-Call Savings Reproduce — the Cost Savings Don't.Two weeks ago CodeGraph hit GitHub trending — tree-sitter + SQLite/FTS5 + MCP for Claude Code, 19k+ stars in a week. The team published a benchmark on 7 repos showing 35% cheaper, 57% fewer tokens, 4600
HGHarrison Guoinharrisonsec.hashnode.dev·May 29 · 20 min readAgent Memory Is a Cache Coherence ProblemThis post is one half of a pair. The other half — Agent Retrieval Is a Cost Curve Problem — argues that Claude Code's within-session code retrieval avoids RAG because the cost curve says it should. Th00
HGHarrison Guoinharrisonsec.hashnode.dev·May 26 · 27 min readAgent Retrieval Is a Cost Curve Problem: Why Claude Code Doesn't Use RAGThere's a popular interview question making the rounds: "Why doesn't Claude Code use RAG to retrieve code? Why grep?" The popular answer goes: chunking breaks code structure, vectors approximate when 00