Plur MCP server

PLUR — Your agents share the same memory

Persistent, open memory for AI agents — local-first, zero-cost, shared across MCP tools (Claude Code, Codex, Cursor, Hermes, OpenClaw). Your agent's memory is plain-text engrams you can read, correct, and delete — not weights you can't.

plur.ai · Benchmark · Engram Spec · npm · Comparisons

Benchmarks

PLUR is memory, not just retrieval — so we measure it on more than one axis, on the full corpus, and we publish the harness so you can reproduce every number.

Retrieval recall — full LongMemEval-S (N=500), R@5, fully local:

Numbers come from plur-ai/plur-bench, which is the source of truth for every benchmark figure PLUR publishes. Where an in-repo number and a plur-bench number disagree, plur-bench wins — it is the reproducible harness, and it is what CI regression-checks.

Chunk granularity, canonical-doc scoring, corpus SHA256 pinned — reproduce it in plur-ai/plur-bench. No cloud call is required for any of these numbers (an optional cloud embedder, openai-3-large, reaches 97.0% hybrid). A faster reranker — ms-marco-minilm-l6 (p50≈245ms vs BGE's ≈5s on CPU) — trades a little recall for sub-second latency.

Run it yourself — and tell us what you get. The harness is plur-ai/plur-bench: CPU-runnable, no API key needed for the local path, corpus auto-fetched and SHA-verified. If you run it, we'd genuinely love to see your numbers — open an issue or discussion with your results, especially if they don't match ours. Independent reproduction is worth more than any number we publish, and we'll gladly credit you.

Retrieval ≠ answer accuracy — and we report them separately, never conflated. End-to-end (LLM-judge) answer accuracy with the reranker stack is 60.5%, versus 52.0% for dumping full context into the prompt and 5.5% with no memory at all.

Agent-task impact — same task, with memory vs without: Haiku + PLUR outperforms Opus without it at roughly 10× less cost; house rules 12–0 across Haiku, Sonnet, and Opus.

Operational — local-first, zero-cost search, data-sovereign by design.

More in progress: LoCoMo, agentic task suites, cross-tool portability, decay / contradiction correctness. Full methodology →

The idea

Shortened. The full README is on GitHub.