Use when the user asks to batch-download academic PDFs with ref-downloader — either ALL references of one paper (Mode A: DOI or PDF input), OR a custom batch of papers (Mode B: DOI/title/arXiv-PMID list, or abstract query like "Author X's recent papers"). Not for one-off PDFs, paper search, or Zotero import.
Use when the user wants to delegate work to the local Claude Code CLI (claude --print, claude --bg, claude ultrareview) — substantive tasks, multi-turn resume, structured output, multi-agent code review, background sessions — and then independently verify what Claude did. Useful from Codex / Kimi / any agent that…
Use when the user wants Claude to delegate work to the local Codex CLI — code review, adversarial review, or substantive rescue tasks — and then independently verify what Codex did. Works in Claude Desktop (no plugin system required); wraps codex exec as PowerShell scripts and keeps run artifacts on disk.
Use when the user wants Codex to delegate work to local Kimi Code, supervise its progress, inspect intermediate/native artifacts, continue a native Kimi session, and verify Kimi's results instead of trusting only the flattened final output.