Jared AI Hub https://jaredai-website.vercel.app//blog Field notes on AI engineering, machine learning systems, and the software built around them. en-us jared_chung@hotmail.com (Jared Chung) jared_chung@hotmail.com (Jared Chung) Sat, 12 Sep 2026 00:00:00 GMT https://jaredai-website.vercel.app//blog/2026-09-12-long-running-agent-architecture Anatomy of a Long-Running Agent: Session, Harness, and Sandbox https://jaredai-website.vercel.app//blog/2026-09-12-long-running-agent-architecture Design long-running agents by separating durable session history, evolving harness logic, and disposable execution environments. Sat, 12 Sep 2026 00:00:00 GMT jared_chung@hotmail.com (Jared Chung) llmagentsopenaiai-engineeringarchitecturesoftware-engineering https://jaredai-website.vercel.app//blog/2026-08-31-agent-tool-discovery Too Many Tools: Testing Agent Tool Discovery https://jaredai-website.vercel.app//blog/2026-08-31-agent-tool-discovery Evaluate always-loaded tools, deferred discovery, and programmatic orchestration before expanding an agent tool catalog. Mon, 31 Aug 2026 00:00:00 GMT jared_chung@hotmail.com (Jared Chung) llmagentsopenaimcpevaluationai-engineering https://jaredai-website.vercel.app//blog/2026-06-30-measuring-coding-agent-productivity Are Coding Agents Actually Saving Time? Measure Review and Rework https://jaredai-website.vercel.app//blog/2026-06-30-measuring-coding-agent-productivity Measure coding-agent productivity using accepted work, review effort, and later rework instead of generated code or perceived speed. Tue, 30 Jun 2026 00:00:00 GMT jared_chung@hotmail.com (Jared Chung) agentsopenaievaluationsoftware-engineeringproductivityai-engineering https://jaredai-website.vercel.app//blog/2026-04-30-llm-routing-fallback-contracts LLM Routing and Fallback: Preserve the Contract, Measure the Tradeoff https://jaredai-website.vercel.app//blog/2026-04-30-llm-routing-fallback-contracts Build model routing and fallback policies that preserve application contracts while measuring quality, latency, and total cost. Thu, 30 Apr 2026 00:00:00 GMT jared_chung@hotmail.com (Jared Chung) llmopenaiai-engineeringevaluationreliabilityoptimization