3D芯片改线很难，AgenticECO把ECO自动化，九案修好七案，比重布线/常规修复强，还不碰时钟网络。
AgenticECO是在开源TaiWei流程上针对3D-IC ECO的智能体工作流，配套的EcoRoute以最小扰动驱动未修改的固定路由器。在九组匹配的自然缺陷用例中，AgenticECO在同一预算下清除七例，而完整重布线和常规修复各清除两例；清除案例平均扰动0.66%，且未触及任何时钟网络。在相同密封契约下跨骨干重跑时，AgenticECO九例全部清除。受控实验显示，占用率感知选择带来合法落点而非修复成功；收紧时钟时最小扰动可决定接受与拒绝。所有接受结果均通过布线、重新提取、max/min时序、DRC和结构等价门控。
AgenticECO: An Agentic Framework for ECO on 3D Integrated Circuits
As Moore's law slows, the industry is turning to three-dimensional integration; yet in merged 3D-IC flows, routed designs expose bond-level defects with no 2D analogue, and post-route engineering change orders (ECO) remain manual, expertise-bound work. Worse, the standard edit-then-fully-reroute practice entangles a repair with router churn, so a signoff number cannot be attributed to the edit that motivated it. We present AgenticECO, an evidence-gated tool-using agent workflow for 3D-IC ECO on the open-source TaiWei flow, paired with EcoRoute, a minimal-disturbance ECO-routing layer that drives the unmodified pinned router so a repair is attributable to its edit. Across nine matched natural defect cases under identical budgets, AgenticECO clears seven versus two for both full reroute and stock repair, at 0.66\% mean disturbance over cleared cases and zero clock nets touched, and a cross-backbone rerun under the same sealed contract clears all nine. Controlled studies show that the repair moves are necessary under preservation, that occupancy-aware choice buys legal landings rather than repair success, and that under tightened clocks minimal disturbance flips accept versus reject. Three preregistered visual studies localize the pixel instrument's edge to contested landing sites, and a preregistered blind diagnostic exactly restores every held-out injected defect, the only arm with zero wrong edits. Every accepted result passes routing, fresh extraction, max/min timing, DRC, and structural-equivalence gates. Code, environment, and per-episode audit artifacts are released as supplementary material.