blackboard

Memory

Search first: /mnemonic:search {relevant_keywords} Capture after: /mnemonic:capture {namespace} "{title}"

Run /mnemonic:list --namespaces to see available namespaces from loaded ontologies.

Mnemonic Blackboard Skill

Cross-session handoff, persistent context, and agent coordination.

Trigger Phrases

• "blackboard", "cross-session", "session handoff", "shared context"

Coordination Overview

Scope	Mechanism	Tools
In-session	Claude Code native swarm	TeamCreate, SendMessage, TaskCreate, TaskUpdate
Cross-session	Mnemonic blackboard handoff	handoff/latest-handoff.md via hooks
Persistent knowledge	Mnemonic memories	*.memory.md files

---

Path Resolution

MNEMONIC_ROOT=$(tools/mnemonic-paths root)
BLACKBOARD=$(tools/mnemonic-paths blackboard)
HANDOFF_DIR=${BLACKBOARD}/handoff

---

Directory Structure

${BLACKBOARD}/
├── _legacy/                      # Pre-migration files (frozen)
├── sessions/
│   └── {session_id}/
│       ├── session-notes.md      # Session activity log
│       └── _meta.json            # Session lifecycle metadata
├── handoff/
│   ├── latest-handoff.md         # Cross-session context (overwritten each session end)
│   └── handoff-{session_id}.md   # Archived per-session handoffs
└── .archive/                     # Archived entries

---

Cross-Session Handoff

How It Works

1. Session end (hooks/stop.py): Writes summary to handoff/latest-handoff.md
2. Session start (hooks/session_start.py): Reads handoff/latest-handoff.md to restore context

This is automatic via hooks.

Handoff Format

# Session Handoff

**Session:** {session_id}
**Ended:** {timestamp}
**Project:** {org}/{project}

## What Was Accomplished
- Completed items

## In Progress
- Ongoing work with current state

## Blocked
- Blocker: reason

## Next Steps
- [ ] Action item 1
- [ ] Action item 2

## Important Context
- Key context for next session