groove-admin-claude-hooks

Install groove's Claude Code native shell hooks. These run outside the model — deterministic, unconditional — and complement groove's advisory markdown hooks (.groove/hooks/start.md, end.md).

Use --disable <hook> to remove a specific hook. Use --list to show current status.

Outcome

Selected hooks are registered in .claude/settings.json and shell scripts are written to .groove/hooks/claude/. Hooks fire automatically on Claude Code lifecycle events without any model involvement.

Available hooks

Name	Event	Matcher	What it does
daily-end-reminder	Stop	—	If hour is 16–21 local time and .groove/index.md exists, prints a reminder to run /groove-daily-end
git-activity-buffer	PostToolUse	Bash	If the Bash command contains git commit, appends a timestamped line to .groove/.cache/git-activity-buffer.txt
block-managed-paths	PreToolUse	Write, Edit	If file_path starts with .agents/skills/groove or skills/groove, exits non-zero to block the write with an explanatory message
context-reprime	SessionStart	startup|compact	Runs the prime script directly — ensures full workflow context is loaded after every session start and compaction
version-check	PostToolUse	—	Checks for a new groove version once per hour; calls groove-utilities-check

Steps

--list

Read .claude/settings.json if it exists. Report which groove hooks are registered and which scripts exist in .groove/hooks/claude/. Exit.

--disable <hook>

Remove the named hook's entry from .claude/settings.json (leave the script in place). Report removed / not found. Exit.

Default (install)

1. Ask which hooks to enable (default: all five):

   Which hooks to install? (all / comma-separated: daily-end-reminder, git-activity-buffer, block-managed-paths, context-reprime, version-check)
   Press enter for all.
   

2. Read .claude/settings.json if it exists; parse as JSON (default {}). Never discard existing non-groove entries.

3. Create .groove/hooks/claude/ directory if absent. Make each script executable (chmod +x).

4. For each selected hook: write the shell script and merge the hook entry into .claude/settings.json.

5. Write .claude/settings.json with the merged result.

6. Report summary:

   ✓ daily-end-reminder  — Stop hook → .groove/hooks/claude/daily-end-reminder.sh
   ✓ git-activity-buffer — PostToolUse/Bash hook → .groove/hooks/claude/git-activity-buffer.sh
   ✓ block-managed-paths — PreToolUse/Write+Edit hook → .groove/hooks/claude/block-managed-paths.sh
   ✓ context-reprime     — SessionStart hook → groove-utilities-prime.sh
   ✓ version-check       — PostToolUse hook → .groove/hooks/claude/version-check.sh
   ✓ .claude/settings.json updated
   

Shell script templates

Write these verbatim to .groove/hooks/claude/. Never overwrite an existing script without showing a diff and confirming.

daily-end-reminder.sh

#!/usr/bin/env bash
# groove: Stop hook — remind about /groove-daily-end during work hours
hour=$(date +%H)
if [ -f "$CLAUDE_PROJECT_DIR/.groove/index.md" ] && [ "$hour" -ge 16 ] && [ "$hour" -le 21 ]; then
  echo "groove: end of work hours — consider running /groove-daily-end"
fi

git-activity-buffer.sh

#!/usr/bin/env bash
# groove: PostToolUse/Bash hook — buffer git commits for memory log
input=$(cat)
command=$(echo "$input" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d.get('tool_input',{}).get('command',''))" 2>/dev/null)
if echo "$command" | grep -q "git commit"; then
  msg=$(echo "$command" | grep -oP '(?<=-m ")[^"]+' | head -1)
  mkdir -p "$CLAUDE_PROJECT_DIR/.groove/.cache"
  echo "$(date '+%Y-%m-%d %H:%M') | ${msg:-<no message>}" >> "$CLAUDE_PROJECT_DIR/.groove/.cache/git-activity-buffer.txt"
fi

block-managed-paths.sh

#!/usr/bin/env bash
# groove: PreToolUse/Write+Edit hook — block edits to managed groove paths
input=$(cat)
path=$(echo "$input" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d.get('tool_input',{}).get('file_path',''))" 2>/dev/null)
if echo "$path" | grep -qE '^(\.agents/skills/groove|skills/groove)'; then
  echo "groove: blocked — '$path' is managed by groove update. Edit under skills/ and rsync to .agents/skills/." >&2
  exit 1
fi

version-check.sh

#!/usr/bin/env bash
# groove: PostToolUse hook — check for new groove version (once per hour)
CACHE="$CLAUDE_PROJECT_DIR/.groove/.cache/last-version-check-ts"
mkdir -p "$CLAUDE_PROJECT_DIR/.groove/.cache"
now=$(date +%s)
if [ -f "$CACHE" ]; then
  last=$(cat "$CACHE")
  diff=$((now - last))
  [ "$diff" -lt 3600 ] && exit 0
fi
echo "$now" > "$CACHE"
bash "$CLAUDE_PROJECT_DIR/.agents/skills/groove-utilities-check/scripts/check.sh" 2>/dev/null || true

.claude/settings.json entries

Merge these into the hooks key. Preserve all other keys.

{
  "hooks": {
    "Stop": [
      {
        "hooks": [
          { "type": "command", "command": "bash $CLAUDE_PROJECT_DIR/.groove/hooks/claude/daily-end-reminder.sh" }
        ]
      }
    ],
    "PostToolUse": [
      {
        "matcher": "Bash",
        "hooks": [
          { "type": "command", "command": "bash $CLAUDE_PROJECT_DIR/.groove/hooks/claude/git-activity-buffer.sh" }
        ]
      },
      {
        "hooks": [
          { "type": "command", "command": "bash $CLAUDE_PROJECT_DIR/.groove/hooks/claude/version-check.sh" }
        ]
      }
    ],
    "PreToolUse": [
      {
        "matcher": "Write",
        "hooks": [
          { "type": "command", "command": "bash $CLAUDE_PROJECT_DIR/.groove/hooks/claude/block-managed-paths.sh" }
        ]
      },
      {
        "matcher": "Edit",
        "hooks": [
          { "type": "command", "command": "bash $CLAUDE_PROJECT_DIR/.groove/hooks/claude/block-managed-paths.sh" }
        ]
      }
    ],
    "SessionStart": [
      {
        "matcher": "startup|compact",
        "hooks": [
          {
            "type": "command",
            "command": "bash $CLAUDE_PROJECT_DIR/.agents/skills/groove-utilities-prime/scripts/groove-utilities-prime.sh"
          }
        ]
      }
    ]
  }
}

When merging: if a hooks key already exists, append groove entries to the relevant event arrays. Do not create duplicates — check if a groove command entry already exists before appending.

Constraints

• Never overwrite non-groove entries in .claude/settings.json
• Never overwrite an existing script without diff + confirmation
• Scripts use python3 to parse JSON stdin — if python3 is absent, skip that hook and warn
• block-managed-paths is aggressive: if it causes false positives the user can disable it with --disable block-managed-paths
• After install: remind the user that hooks take effect on the next Claude Code session restart
• .groove/hooks/claude/ follows the git.hooks git strategy from .groove/index.md