BrainCTL
About
Persistent memory for AI agents. Single SQLite file, 192 MCP tools. FTS5 search, knowledge graph, session handoffs, write gate. No server, no API keys, no LLM calls.
Details
- Author
- tschonleber
- Categories
- Productivity, AI, Other, Knowledge Base
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Setup
Install BrainCTL in your MCP client (Claude Desktop, Cursor, Windsurf, and others).
Repository: https://github.com/tschonleber/brainctl
Follow the installation instructions in the repository README, then restart your MCP client.
brainctl-only baselines (Brain.search, FTS5)
LongMemEval(289-question retrieval-friendly subset oflongmemeval_s):
LongMemEval lock snapshot(old FTS-only baseline vs final locked, n=289):
LOCOMO(1,982 questions, 5 categories, 10 conversations):
LOCOMO latest retrieval operating points(n=1,982, no-LLM retrieval):
Interpretation: hybrid leads session on hit@1, hit@5, MRR, and multi-hop hit@5, ties temporal hit@5, and slightly trails on single-hop hit@5.
The Brain.search baseline remains weaker on hop-heavy categories (single-hop/multi-hop hit@1 0.167 / 0.174). Root cause: recency and salience rerankers bias toward recent memories; LOCOMO uses uniform synthetic timestamps with gold evidence concentrated in early sessions, so reranking can fight lexical evidence. A--benchmarkpreset that flattens recency/salience is available for evaluation runs.
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