How does Claude Code manage agent tasks? 1,042 TaskCreate calls. 97.2% completion rate. Agent task lists complete 38pp more often than TodoWrite.

TaskCreate/Update/List/Get analysis across all your sessions.

npx cc-tasks

No install. No dependencies.

• Tasks created — total TaskCreate calls across all sessions
• Completion rate — % of tasks marked completed vs created
• Update breakdown — completed / in-progress / deleted
• Sessions with tasks — how many sessions used the task system
• Avg tasks/session — typical task list size
• vs TodoWrite — direct comparison with the older TodoWrite pattern

  cc-tasks — Agent Task Analysis
  ════════════════════════════════════════

  ▸ Overview
    Tasks created:      1,042
    Task updates:       2,111
    TaskList calls:     226
    Sessions with tasks:156
    Avg tasks/session:  6.7
    Max tasks/session:  34

  ▸ Task update breakdown
    Completed    ✓  ████████████████  46.5%  (1,042)
    In progress  ◎  ████████░░░░░░░░  21.0%  (469)
    Deleted      ✗  ░░░░░░░░░░░░░░░░   2.3%  (51)

  ▸ Agent Tasks vs TodoWrite
    Agent Tasks (TaskCreate):  97.2% completion rate
    TodoWrite tasks:           59.2% completion rate (from cc-todo)
    Difference: +38.0pp — agent tasks complete 38.0pp more often

npx cc-tasks          # terminal output
npx cc-tasks --json   # JSON output for scripting

{
  "version": "1.0.0",
  "totalTasksCreated": 1042,
  "totalTaskUpdates": 2111,
  "totalTaskLists": 226,
  "totalTaskGets": 108,
  "completionRate": 97.2,
  "completedCount": 1042,
  "inProgressCount": 469,
  "deletedCount": 51,
  "sessionsWithTasks": 156,
  "avgTasksPerSession": 6.7,
  "maxTasksInSession": 34
}

Try it without installing: yurukusa.github.io/cc-tasks

Drag-drop your ~/.claude/projects/ folder (or any subfolder) to analyze.

Reads ~/.claude/projects/**/*.jsonl session transcripts and extracts every TaskCreate, TaskUpdate, TaskList, and TaskGet tool call. Tracks status transitions (completed / in_progress / deleted) and compares against the TodoWrite completion rate from cc-todo. Zero external dependencies.

Part of cc-toolkit — 73 tools for understanding your Claude Code sessions.