interop-router

interop-router is a skill for Claude Code from claude-world/director-mode-lite. It costs 54 tokens per session (369 once invoked), scanned A, original, MIT.

A guide for choosing Claude Code, Codex CLI, or Grok Build as the next coding assistant for a task. It compares continuity, fit, independent review, workspace safety, and the evidence needed for a handoff.

In plain words
What is it for?
Use it when planning a handoff, comparing the three assistants, or deciding whether an independent implementation or review would reduce mistakes.
Why use it?
It helps decide whether changing assistants is worth the context and setup cost, without launching another command-line tool or changing its controls.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: mentions Claude Code; mentions Codex.

Part of the director-mode-lite plugin — 36 skills, 14 agents shipped together

Good fit Use it when planning a handoff, comparing the three assistants, or deciding whether an independent implementation or review would reduce mistakes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/claude-world/director-mode-lite/interop-router
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add claude-world/director-mode-lite --skill interop-router
Clone the repo
git clone --depth 1 https://github.com/claude-world/director-mode-lite

Made for: Claude Code.

Or install director-mode-lite, the plugin that ships this one along with the rest of its 36 skills, 14 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for interop-router

README.md
[![agentmods](https://agentmods.dev/badge/skills/claude-world/director-mode-lite/interop-router/github.svg)](https://agentmods.dev/skills/claude-world/director-mode-lite/interop-router)
Your own site
<a href="https://agentmods.dev/skills/claude-world/director-mode-lite/interop-router"><img src="https://agentmods.dev/badge/skills/claude-world/director-mode-lite/interop-router/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for interop-router

Your own site · 80×15
<a href="https://agentmods.dev/skills/claude-world/director-mode-lite/interop-router"><img src="https://agentmods.dev/badge/skills/claude-world/director-mode-lite/interop-router.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 369 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 40
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00054 $0.00369
Opus 5 $0.00027 $0.00185
Sonnet 5 $0.00011 $0.00074
Haiku 4.5 $0.00005 $0.00037

Measured 10d ago against content hash 2059392efc44, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

interop-router scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

The scan reads SKILL.md. This mod also ships 3 executable files (scripts/check_cli_available.sh, scripts/score_decision.py, scripts/wrap_context.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/interop-router/SKILL.md · 42 lines

What it actually says

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.

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 42 lines · 54 tokens per session scan A 2059392efc44

Subscribe to this mod's changes

interop-router is a skill published in the GitHub repository claude-world/director-mode-lite (81 stars, last pushed 10d ago), licensed MIT. It adds 54 tokens to every session and 369 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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