agent hook — A script the harness runs automatically at a fixed point in an agent's loop — before a tool call, after an edit, on session start.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
Why it matters
Coding agents drift across architectural boundaries faster than review catches it. ArchSpec declares components and forbidden references in one Ruby file and fails CI on violation, with no app boot or database — fast enough for a git agent hookA script the harness runs automatically at a fixed point in an agent's loop — before a tool call, after an edit, on session start.Full definition → on every AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → change.
articleCodeSpec: Dual Executable Specifications for Agentic Long-Horizon Feature DevelopmentPeiding Wang, Li Zhang, Fang Liu, Taichuan Li, Yinghao Zhu
articleArchitecture as Capability Equalizer for Coding AgentsArquimedes Canedo
articleSpecification-first convergence with an AI coding agent: a case study of dismantling a core architectural invariant across 189 files in a 717k-line codebase with no test oracle and no human code reviewJoel Abenhaim