Nautilus Compass Memory MCP Server

🇬🇧 English (this file) · 🇨🇳 中文 Three pillars, one plugin: 1 · Black-box long-term memory - now with SOTA retrieval. Raw text embedded locally with BGE-m3. No extraction LLM at ingest, no graph, no data leaving your machine. In Aug 2026 we added utterance-routed chunk retrieval: single-session and knowledge-update questions route to turn-window chunks (the answer usually lives in ONE user turn; whole-session…

People who work with a2a, agent memory and agentic ai and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-18 · ★ 207 · #25 OF 304 MAINTAINED MEMORY · VERIFIED 2026-09-18

NOASSERTION · Python servers · how we verify → /methodology

01 · Install Nautilus Compass Memory

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add chunxiaoxx-nautilus-compass --transport http https://compass.nautilus.social/mcp/

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "chunxiaoxx-nautilus-compass": {
      "url": "https://compass.nautilus.social/mcp/"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://compass.nautilus.social/mcp/

transport: streamable-http

endpoint alive - authentication required · probed 2026-09-18

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions · remote - your agent's requests go to compass.nautilus.social

endpoint auth requires authentication - rejected our unauthenticated MCP initialize

license no standard license detected - usage rights unclear; check the repo before commercial use

pypi package nautilus-compass - check the name against the project README before installing (PyPI has no namespace ownership)

registry namespace io.github.chunxiaoxx is GitHub-verified and matches the repo owner

03 · What Nautilus Compass Memory can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v3.2.0 · 2026-09-10

Sealed, not just claimed · This release turns our benchmark numbers into cryptographically verifiable artifacts. · VerifyPack v0.2 (tools/verifypack) · Every public figure now ships as a sealed pack: pack.json + sha256…

v3.0.0 · 2026-08-25

从记忆库到进化引擎 · 3.0 不是新功能堆叠,是同一系统的代际合拢:记忆不再只"存与召回",而是进入提炼燃料 → 外部裁决 → 蒸馏变强的进化循环。 · 引擎 · 语义 recall 修复(Windows torch 长路径坏死)+ 直交付正文摘录 · GOAL SSOT 目标账本 + 每小时心跳执法(探活/自愈/合约亮牌) · 云端容量三连根因修复,load 10-14 → 1.x;记忆池 68.8k → ~3k…

v2.3.1 · 2026-07-02

v2.3.1 · 2026-07-02 · liveness framework + 2 RED 探针修复 · 核心新增:liveness framework(ops/liveness_audit.py) · 聚合 3 探针,验证 PoI binding-DONE §3: · probe_ledger_growth:PoI 快照存在 + 行数 > 1 → GREEN(数据活着) · 实际 1510 行…

04 · Who maintains Nautilus Compass Memory

Nautilus Compass Memory is maintained by chunxiaoxx. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository: github.com/chunxiaoxx/nautilus-compass
category: memory - ranked #25 of 304 actively-maintained memory servers as of 2026-09-18.
release cadence: 3 releases in the last 90 days (latest 2026-09-10)
registry: io.github.chunxiaoxx/nautilus-compass (active, first published 2026-05-18 · 3 versions)
packages: pypi:nautilus-compass

06 · Nautilus Compass Memory FAQ

What is Nautilus Compass Memory?

Is Nautilus Compass Memory still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-18 and it shipped 3 releases in the last 90 days. We re-verify nightly.

How do I install Nautilus Compass Memory?

Run `uvx nautilus-compass`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does Nautilus Compass Memory require authentication?

Yes - when we probed the endpoint on 2026-09-18, it rejected an unauthenticated MCP initialize; you'll need credentials to connect.

07 · Alternatives to Nautilus Compass Memory

Alternatives to Nautilus Compass Memory

Maintained memory servers if Nautilus Compass Memory isn't the fit.

Pairs well with

Servers that cover what Nautilus Compass Memory doesn't - only shown when the pairing reason fits the companion.

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