agent/claude/code/scripts/pre-compact.sh
Snider 93415257f3 feat: OpenBrain integration for session hooks
SessionStart: query OpenBrain for recent activity + project context,
inject into Claude's context window on every new session.

Stop: async save session context to OpenBrain when git changes exist.

PreCompact: save working state to OpenBrain before context compaction.

API key read from ~/.claude/brain.key or CORE_BRAIN_KEY env var.

Co-Authored-By: Virgil <virgil@lethean.io>
2026-03-14 11:44:04 +00:00

90 lines
2.5 KiB
Bash
Executable file

#!/bin/bash
# Pre-compact: Save state locally + to OpenBrain before context compaction
#
# Captures:
# - Working directory + branch
# - Git status (files touched)
# - Todo state (in_progress items)
# - Saves to OpenBrain so the memory survives across sessions
STATE_FILE="${HOME}/.claude/sessions/scratchpad.md"
BRAIN_URL="${CORE_BRAIN_URL:-https://api.lthn.sh}"
BRAIN_KEY="${CORE_BRAIN_KEY:-}"
BRAIN_KEY_FILE="${HOME}/.claude/brain.key"
TIMESTAMP=$(date '+%s')
CWD=$(pwd)
mkdir -p "${HOME}/.claude/sessions"
# Load API key
if [[ -z "$BRAIN_KEY" && -f "$BRAIN_KEY_FILE" ]]; then
BRAIN_KEY=$(cat "$BRAIN_KEY_FILE" 2>/dev/null | tr -d '[:space:]')
fi
# Get git status
GIT_STATUS=""
BRANCH=""
if git rev-parse --git-dir > /dev/null 2>&1; then
GIT_STATUS=$(git status --short 2>/dev/null | head -15)
BRANCH=$(git branch --show-current 2>/dev/null)
fi
# Detect project
PROJECT=""
case "$CWD" in
*/core/go-*) PROJECT=$(basename "$CWD" | sed 's/^go-//') ;;
*/core/php-*) PROJECT=$(basename "$CWD" | sed 's/^php-//') ;;
*/core/*) PROJECT=$(basename "$CWD") ;;
*/host-uk/*) PROJECT=$(basename "$CWD") ;;
*/lthn/*) PROJECT=$(basename "$CWD") ;;
*/snider/*) PROJECT=$(basename "$CWD") ;;
esac
# Save local scratchpad
cat > "$STATE_FILE" << EOF
---
timestamp: ${TIMESTAMP}
cwd: ${CWD}
branch: ${BRANCH:-none}
---
# Resume After Compact
You were mid-task. Do NOT assume work is complete.
## Project
\`${CWD}\` on \`${BRANCH:-no branch}\`
## Files Changed
\`\`\`
${GIT_STATUS:-none}
\`\`\`
## Next
Continue the in_progress todo. Check OpenBrain for context.
EOF
echo "[PreCompact] Local snapshot saved" >&2
# Save to OpenBrain
if [[ -n "$BRAIN_KEY" && -n "$GIT_STATUS" ]]; then
CHANGED_FILES=$(echo "$GIT_STATUS" | awk '{print $2}' | tr '\n' ', ')
CONTENT="Context compaction during work on ${PROJECT:-unknown} (branch: ${BRANCH:-none}). Changed files: ${CHANGED_FILES}"
curl -s --max-time 5 "${BRAIN_URL}/v1/brain/remember" \
-X POST \
-H 'Content-Type: application/json' \
-H 'Accept: application/json' \
-H "Authorization: Bearer ${BRAIN_KEY}" \
-d "{
\"content\": $(echo "$CONTENT" | python3 -c 'import json,sys; print(json.dumps(sys.stdin.read().strip()))'),
\"type\": \"context\",
\"project\": \"${PROJECT:-unknown}\",
\"agent_id\": \"cladius\",
\"tags\": [\"pre-compact\", \"session\"]
}" >/dev/null 2>&1
echo "[PreCompact] Saved to OpenBrain" >&2
fi
exit 0