ClawVM: Harness-Managed Virtual Memory for Stateful Tool-Using LLM Agents

• URL: http://arxiv.org/abs/2604.10352v1
• Date: Sat, 11 Apr 2026 21:38:15 GMT
• Title: ClawVM: Harness-Managed Virtual Memory for Stateful Tool-Using LLM Agents
• Abstract summary: textscClawVM is a virtual memory layer that manages state as typed pages with minimum-fidelity invariants.<n>textscClawVM eliminates all policy-controllable faults whenever the minimum-fidelity set fits within the token budget.
• Score: 0.7377939119373589
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Stateful tool-using LLM agents treat the context window as working memory, yet today's agent harnesses manage residency and durability as best-effort, causing recurring failures: lost state after compaction, bypassed flushes on reset, and destructive writeback. We present \textsc{ClawVM}, a virtual memory layer that manages state as typed pages with minimum-fidelity invariants, multi-resolution representations under a token budget, and validated writeback at every lifecycle boundary. Because the harness already assembles prompts, mediates tools, and observes lifecycle events, it is the natural enforcement point; placing the contract there makes residency and durability deterministic and auditable. Across synthetic workloads, 12 real-session traces, and adversarial stress tests, \textsc{ClawVM} eliminates all policy-controllable faults whenever the minimum-fidelity set fits within the token budget, confirmed by an offline oracle, and adds median <50 microseconds of policy-engine overhead per turn.

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