Install

One-command (plugin)

claude plugin marketplace add NYCU-Chung/cc-statusline
claude plugin install cc-statusline@cc-statusline

Hooks are registered automatically. You still need to add the statusLine config manually:

Add this to ~/.claude/settings.json:

{
  "statusLine": {
    "type": "command",
    "command": "node ~/.claude/statusline.js",
    "refreshInterval": 30
  }
}

Then copy the files:

git clone https://github.com/NYCU-Chung/cc-statusline ~/cc-statusline

# Main statusline script
cp ~/cc-statusline/statusline.js ~/.claude/statusline.js

# Supporting hooks (optional but recommended — they feed data to the statusline)
cp ~/cc-statusline/hooks/*.js ~/.claude/hooks/

Hook wiring

Add these to your ~/.claude/settings.json hooks section to enable all statusline features:

{
  "hooks": {
    "SubagentStart": [{ "matcher": ".*", "hooks": [{ "type": "command", "command": "node ~/.claude/hooks/subagent-tracker.js" }] }],
    "SubagentStop": [{ "matcher": ".*", "hooks": [{ "type": "command", "command": "node ~/.claude/hooks/subagent-tracker.js" }] }],
    "PreCompact": [{ "matcher": ".*", "hooks": [{ "type": "command", "command": "node ~/.claude/hooks/compact-monitor.js" }] }],
    "UserPromptSubmit": [{ "hooks": [
      { "type": "command", "command": "node ~/.claude/hooks/message-tracker.js" },
      { "type": "command", "command": "node ~/.claude/hooks/summary-updater.js" }
    ]}],
    "Stop": [{ "matcher": "*", "hooks": [
      { "type": "command", "command": "node ~/.claude/hooks/message-tracker.js" }
    ]}],
    "PostToolUse": [{ "matcher": "Write|Edit", "hooks": [
      { "type": "command", "command": "node ~/.claude/hooks/file-tracker.js" }
    ]}]
  }
}

What each hook does

| Hook | Event | Purpose | |------|-------|---------| | subagent-tracker.js | SubagentStart / SubagentStop | Tracks which agents are running or finished, including concurrent invocations | | compact-monitor.js | PreCompact | Counts how many times context was compacted | | file-tracker.js | PostToolUse (Write/Edit) | Records recently edited files | | message-tracker.js | UserPromptSubmit / Stop | Caches recent messages for the history column | | summary-updater.js | UserPromptSubmit | Every ~10 messages, asks Claude to rewrite the whole-session summary with compression rules | | mcp-status-refresh.js | (none — auto-spawned) | Statusline launches this in the background each render to refresh ~/.claude/mcp-status-cache.json from claude mcp list. Self-skips if cache is fresh (<90s). |

How it survives resets and multi-session

Delta-based cost / duration / lines / tokens. Claude Code occasionally resets cost.total_cost_usd, total_duration_ms, etc. mid-session (context compaction, auto-recovery, etc.). The statusline tracks deltas in /tmp/claude-cum-<sid>.json — when the payload value drops, only the baseline is reset; the cumulative total never goes backward. Survives --continue and --resume because the cum file is keyed by session_id.

Cross-session quota aggregation. Quotas are global across all your Claude Code sessions, but each session's payload only reflects its own cached observation. The statusline writes a snapshot to ~/.claude/rate-limit-snapshots.json on every render and aggregates across sessions: it picks the snapshot with the latest live resets_at (most recent API observation) and shows MAX used_percentage from that group. All sessions converge on the same displayed %.

All-session cost + tokens. The cost $TOTAL ($SESSION this session) and tokens TOTAL (SESSION this session) figures aggregate across every claude-cum-*.json in tmpdir, so you see lifetime spend / usage and current-session values side by side.

Time-based rate-limit rollover. Claude Code's rate_limits.*.resets_at is frozen at the moment of the last API response. If the user leaves the session idle past a reset boundary, the payload says "87% used" even though the window has rolled over to 0%. The statusline checks resets_at against real time — past expiry, it auto-zeros the bar and computes the countdown against the next rolling 5h/7d boundary.

Auto session rename for /resume picker. Claude Code's transcript JSONL supports a {"type":"custom-title","customTitle":"..."} entry that drives the /resume picker's display name. summary-updater.js injects the current summary (first 40 chars) as a custom-title entry every time it writes, so each session gets a meaningful name instead of a UUID — no more guessing which hash is which.

Whole-session summary with compression. The summary is meant to capture the entire session arc, not the latest topic. The summary-updater prompt enforces a 120-char cap with explicit compression rules (merge related sub-topics, drop the least-significant older item) so new topics displace less-significant old ones rather than the most-recent work being truncated.

Customize which rows you see

Don't want every row? Use the /cc-statusline:rows slash command (shipped with the plugin; saves to ~/.claude/cc-statusline-rows.json):

/cc-statusline:rows                      — show current state
/cc-statusline:rows off                  — master switch: hide statusline entirely
/cc-statusline:rows on                   — master switch: re-enable
/cc-statusline:rows hide agents edited   — turn listed rows off
/cc-statusline:rows show agents          — turn listed rows on
/cc-statusline:rows only cost quota      — enable listed, disable rest
/cc-statusline:rows toggle history       — flip listed rows
/cc-statusline:rows reset                — all on

11 row keys: summary, dir, repo, model, cost, usage, quota, agents, memory_mcp, edited, history.

The layout auto-collapses when cells go empty — hide an entire column and the split layout merges into full-width rows; hide the whole split block and the top border fuses with the next section (no redundant horizontal lines).

Without hooks

The statusline works without the hooks — you just won't see agents, edited files, message history, compact count, or session summary. Quotas, cost, model, git, tokens, memory, and MCP all work from the built-in statusline JSON payload + the auto-spawned MCP refresher.

Known limitations

• Claude Code does not pass terminal width to statusline commands (issue #22115). On Windows, the script uses PowerShell as a fallback to detect width. The right border may not perfectly align with the terminal edge until this is fixed upstream.
• MCP server state shown by the statusline comes from claude mcp list (a fresh probe at refresh time). Claude Code's /mcp UI shows the running session's cached state. The two can disagree if a server's connection has changed since the session started — the statusline reflects the latest probe, the UI reflects the session's view.
• claude mcp list does not expose all built-in bridges (e.g. claude-in-chrome), so the statusline's MCP count can be lower than what /mcp shows.
• Claude Code does not currently expose live MCP state in the statusline JSON payload (issue #5511) — once it does, the auto-spawned refresher won't be needed.

License

MIT