Agent Eval Practical Guide 03: How to Choose Evaluation Methods

Part three of the Agent Eval Practical Guide: a systematic overview of when to use code-based evaluation, LLM judging, and human evaluation, how to translate business goals into quantifiable metrics, and how evaluators themselves should be evaluated and calibrated.

August 5, 2026 · 8 min · LZY

Agent Eval Practical Guide 02: How to Build an Eval Set

Part two of the Agent Eval Practical Guide: from query sources, reverse synthesis, and judgment design, to the necessity of world_state and trajectory_anchors — a complete breakdown of what makes an eval case production-grade.

July 17, 2026 · 7 min · LZY

Agent Eval Practical Guide 01: The More Complex the System, the More Evaluation Must Come First

The opening piece of the Agent Eval Practical Guide series: unpacking the non-determinism and complexity accumulation of Agent systems, arguing why evaluation is not a report card but an objective function, and how to compress feedback from days to minutes with a minimal evaluation loop.

July 13, 2026 · 6 min · LZY

Beyond SOTA: What Agent-Memory Benchmarks Actually Measure — and What They Miss

A comprehensive survey of agent-memory benchmarks: from LoCoMo and LongMemEval to PersonaMem, covering evaluation methodology, metrics, and data synthesis pipelines across conversational memory, user profiling, and multimodal memory.

July 9, 2026 · 22 min · LZY

From Agent Trajectory to Agent Skill: How to Turn Experience into Compounding Returns

How to convert agent trajectories into reusable skills through extraction, validation, deduplication, evaluation, and continuous optimization.

June 2, 2026 · 18 min · LZY

On Agent Harness: A Minimalist Design Guide for AI Agent Harnesses in 2026

A practical 2026 guide to the minimum architecture of an AI agent harness: loops, tools, filesystems, context management, memory, subagents, and observability.

April 8, 2026 · 8 min · LZY