codex-widget-kit

Widget ideas

Candidates for the next widgets. Each one lists the data Codex already writes, so nothing here needs a new Codex feature. ⭐ marks the ones that would look best in a short demo video. ✅ shipped in 0.2.0: the sparkline charts output tokens per request (total tokens mostly re-count the context), the command feed shows program, subcommand and exit code but no duration, and the layouts are auto, compact, standard, expanded.

# Widget What it shows Data source (rollout unless noted) Effort
1 ✅ ⭐ Reset countdown “5h resets in 1 h 12 min” under each ring rate_limits.primary/secondary.resets_at S
2 ✅ ⭐ Token burn sparkline ▁▂▅█▃ tokens per request over the last 20 requests token_count.info.last_token_usage.total_tokens S
3 Cache-hit meter Share of input served from cache, which is why long sessions stay cheap cached_input_tokens / input_tokens S
4 ✅ ⭐ Turn timer Live elapsed time of the current turn, plus the session’s average turn task_started / task_complete timestamps S
5 ✅ ⭐ Files touched Files changed this session, with a coloured dot per edit item_completed FileChange (paths only, shortened) M
6 ✅ Command feed The last 5 commands: program name, exit status, duration item_completed CommandExecution (first word only, never arguments or output) M
7 ⭐ Approval alert The pane flashes and rings the bell when Codex waits on your approval PermissionRequest hook via ~/.codex/hooks.json (opt-in) M
8 ✅ Compaction counter How often the context was compacted, and when last item_completed ContextCompaction S
9 ⭐ Sub-agent tree Agents drawn as a tree by agent_path depth (/root/a/b) sub-agent session_meta.agent_path M
10 ✅ MCP activity Calls per MCP server, last tool used item_completed McpToolCall (server and tool names) S
11 ⭐ Multi-session board One mini-row per active Codex session across all folders every recent rollout, grouped by cwd M
12 Credits gauge Credit balance when the plan uses credits rate_limits.credits S
13 Done notification A macOS / Linux desktop notification when a long turn finishes task_complete + osascript / notify-send (opt-in) S
14 Git pulse Branch, ahead/behind, and lines changed in the working tree git in --cwd, polled every 10 s S
15 Cost estimate Approximate spend from token counts and a user-supplied price table total_token_usage + ~/.codex/widget-kit/prices.json M
16 ✅ Layout presets --layout band|cards|compact for short or narrow panes — S

Principles every idea must keep: read-only, no network, no prompts or outputs on screen, hidden when the data is missing, and zero dependencies.