/interop-router

name: interop-router
description: Suggest whether Claude Code, Codex CLI, or Grok Build is a useful next collaborator, without launching a CLI or changing controls. Use when comparing the three CLIs, planning a handoff, or deciding whether an independent implementation or review would help.
user-invocable: true

Cross-CLI Routing Guide

Offer a recommendation, its tradeoffs, and a copyable next step. Do not launch another CLI unless the user asks you to execute the handoff.

Decision prompts

• Continuity: would switching cost more context than it saves?
• Fit: does another CLI have a native workflow or perspective useful here?
• Independence: would a separate review reduce correlated mistakes?
• Worktree: can the receiver safely inspect or edit the current repository?
• Evidence: is the handoff packet specific enough to verify completion?

Practical mapping

| Need | Useful option | | --- | --- | | Stay with the full current conversation | Keep the current CLI | | Independent implementation or review | Codex CLI or Grok Build | | Claude-native project workflow or existing Claude session | Claude Code | | Claude-compatible import plus xAI-native workflows | Grok Build | | Repository instructions and reusable cross-tool skills | Codex CLI |

These are starting points, not rankings. Prefer the CLI the user already has authenticated and understands unless a switch brings a concrete benefit.

Suggested response

1. Name the recommended CLI and one reason. 2. Name the switching cost or uncertainty. 3. Offer to create a `session-relay` packet. 4. If accepted, create it and print the receiving command.

Keep the result at suggestion level. Never add auto-approve, permission bypass, sandbox, network, or hook-trust flags to make a handoff easier.