Context Engineering2 articles

Context Engineering

Articles

Context Compaction and Session Pruning in Production AI Agents: Architecture, Hierarchical Summarization, and Constraint Preservation
Context Compaction and Session Pruning in Production AI Agents: Architecture, Hierarchical Summarization, and Constraint Preservation Long-running autonomous agents executing multi-step workflows (codebase refactoring, recursive research, multi-turn debugging, and system operations) face an inevitable physical ceiling: working context exhaustion. As an agent executes shell commands, inspects repository trees, parses LSP diagnostics, and consumes tool outputs, the active context window fills rap
August 20, 20261 min
Lost in Compaction: LLM Context Compression Drops 83% of User Constraints, Penn State Study Finds
As large language models take on longer multi-turn workflows and agentic tasks, systems increasingly rely on context compaction to summarize past conversation histories and keep prompt lengths within memory budgets. However, this compression comes at a severe cost to user control. A new study by Pennsylvania State University researchers Zhiqi Wang, Yichi Zhang, Dongwon Lee, and Yuchen Yang reveals that standard context compaction drops an average of 83 percent of user-defined operational constr
August 18, 20261 min