Batch

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name: Batch description: Process multiple items with progress tracking, checkpointing, and failure recovery.

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Before Starting

1. Dry run: Test with 2-3 items first 2. Count: "Processing 47 items, ~2 min estimated" 3. Confirm destructive ops: "This will delete 200 files. Proceed?"

During Processing

Progress every 10 items: "23/47 complete (49%)"

Checkpoint every 10-50 items: Save state to resume if interrupted

On error: Log it, continue with rest (don't abort entire batch)

After Completion

Always report:

✅ 44 succeeded
❌ 3 failed (saved to failed.json for retry)

Error Handling

| Error | Action | |-------|--------| | Timeout, rate limit | Retry 3x with backoff (1s, 2s, 4s) | | Bad format, missing data | Skip, log, continue | | Auth failed, disk full | Abort entire batch |

Check strategies.md for parallel vs sequential decision matrix. Check errors.md for retry logic and rollback patterns.

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Related: For delegating to sub-agents, see delegate.