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Memory
NEXO Desktop Runtime
Add local memory, session continuity, guard checks, followups, watchdog signals, and MCP tools to NEXO Desktop.
What it does
Adds the local runtime core used by NEXO Desktop, with semantic memory, session coordination, followups, watchdog checks, and MCP tools. It installs through the compatibility package, stores data under ~/.nexo/ by default, and uses Deep Sleep to consolidate, prune, and merge memories.
When to use it
- Maintaining context across sessions
- Checking past mistakes before code edits
- Tracking reminders and verification followups
- Consolidating and cleaning local memory
The skill document
NEXO Desktop Runtime Core
This skill installs the runtime core used by NEXO Desktop. It provides local memory, Deep Sleep, Evolution support-ticket mode, skills, watchdog, followups, and MCP tools through the existing compatibility package.
Setup
If your OpenClaw client shows an install action for this skill, use that first. It installs the compatibility package used by the NEXO Desktop runtime via your configured Node package manager.
If you are setting it up manually, install the runtime core:
npx nexo-brain
After the runtime is installed, add the MCP server to your OpenClaw config (~/.openclaw/openclaw.json):
{
"mcp": {
"servers": {
"nexo-brain": {
"command": "python3",
"args": ["~/.nexo/server.py"],
"env": {
"NEXO_HOME": "~/.nexo"
}
}
}
}
}
Restart the gateway: openclaw gateway restart
What You Get
Key runtime capabilities include:
- Local Memory - semantic recall, trust scoring, sentiment detection, and continuity
- Guard System - checks past mistakes before code changes
- Deep Sleep - overnight consolidation, cleanup, and memory maintenance
- Learnings - error patterns and prevention rules, searchable by category
- Session Management - startup, heartbeat, and multi-session coordination
- Reminders & Followups - tracks user tasks and system verification tasks separately
- Entities & Preferences - remembers people, services, URLs, and observed user preferences
- Watchdog - local reliability checks and recovery signals
How Memory Works
NEXO keeps local working memory and long-term memory on device:
- Recent context - short-lived session and task state
- Working memory - active preferences, entities, and decisions
- Long-term memory - semantic search by meaning with retention controls
Deep Sleep consolidates, prunes, and merges memory so the runtime stays useful without sending private examples to public services.
Key Tools
| Tool | When to Use |
|---|---|
nexo_startup | Once at session start — registers session, returns active sessions |
nexo_heartbeat | Every interaction — updates task, checks inbox |
nexo_cognitive_retrieve | Semantic search across all memories |
nexo_guard_check | Before editing code — checks for past errors |
nexo_learning_add | After resolving an error — prevents recurrence |
nexo_session_diary_write | Before closing session — enables continuity |
nexo_cognitive_trust | After user feedback — calibrates rigor level |
Privacy
Everything stays local by default in ~/.nexo/. Support and improvement tickets are anonymized: personal names, client data, examples, and private content are not sent.
More Info
Questions people ask
- What does the runtime remember?
- It keeps recent context, working memory for active preferences, entities, and decisions, and long-term memory searchable by meaning with retention controls.
- How do I connect it to OpenClaw?
- Install with the OpenClaw install action or run `npx nexo-brain`, add the `nexo-brain` MCP server to `~/.openclaw/openclaw.json`, then restart the gateway.
- Does memory stay on the device?
- Yes. Data stays local by default in `~/.nexo/`; support and improvement tickets are anonymized so personal names, client data, examples, and private content are not sent.
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