OpenClaw Memory Plugin Analysis: Lossless Claw + LanceDB Recommended

OpenClaw agents can lose context after about 20 minutes, causing them to forget instructions. The issue stems from how OpenClaw assembles context before each LLM call: System prompts → History → Tool schemas → Skills → Memory. When the memory layer becomes bloated, agents experience amnesia and API costs increase.

Memory Plugin Test Results

• Default Markdown Setup (C-Tier): Fine for strict, static rules but causes token bloat that compresses instructions as the context window fills. Not recommended as the only active memory.
• Mem0 Plugin (B-Tier): Offers good automation but compromises local privacy and can cost up to 7 cents per message, making it expensive for 24/7 use.
• Obsidian Vault Integration (B+ Tier): Provides persistent long-term memory when properly connected to automatically link context across sessions. Good for archiving and building knowledge graphs but can be heavy for fast recall during coding.
• Lossless Claw + LanceDB (S-Tier): The recommended combination. Lossless Claw is a free plugin that prevents context loss by allowing agents to store and recall past information without dropping important details. LanceDB provides fast local vector storage that maintains data privacy.

Recommended "No-Amnesia" Stack

The author's current configuration for reliable operation:

• Main Agent: Claude Opus 4.6 for heavy reasoning
• Sub-agent: Kimi K2.5 via Kimi Code for isolated tasks
• Active Memory: Lossless Claw + LanceDB for sharp context at near-zero cost
• Static Rules: Obsidian for system rules and file-system level context (not for conversation history)