OptMem

OptMem gives your coding agent long-term memory using a short prompt and one Python script. Memories go into an append-only log of fixed-width records, so every lookup is a single disk seek, with no database or vector store. The agent summarizes older memories into a binary tree as it goes and searches the full log by regex when it needs detail. It's from Victor Taelin, of HVM and Bend.

Install is a curl-to-shell script that drops one dependency-free Python file into ~/.optmem and runs init; neither the script nor the tool makes network calls. Commands cover waking up, noting, napping (answering pending merges), recall, zoom and forget. The summaries are written by your agent, so it spends its own tokens on compression.

Free to download, but not open source: there's no license file, so no reuse or redistribution rights are granted, and a license question in the issues has gone unanswered since August. Solo devs experimenting with agent memory can try it. Teams shouldn't build on code they have no license to.

The catch: the prompt tells the agent to record anything it learns about your life, even indirectly, into a plaintext log it's told never to edit or delete. Development stopped at the end of July, and the install script pulls from an unpinned main branch.