Crosscheck

Claude-hosted Claude↔Codex crosschecks of improvement ideas, plans, and completed changes. Automatically selects independent proposals, draft critique, or mutual review and allows candid rejection. Use for explicit requests such as "크로스체크", "코덱스랑 핑퐁", "둘이 의견 취합해", "cross-check with codex", or "/crosscheck". Discussing or editing this skill does not authorize another model call.

1 starsAI, LLMs & Agents

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add moveju112/skill_verify --skill crosscheck

Manual install

git clone --depth 1 https://github.com/moveju112/skill_verify.git /tmp/skill_verify
mkdir -p ~/.claude/skills
cp -r /tmp/skill_verify/skills/crosscheck ~/.claude/skills/crosscheck

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Claude-hosted Crosscheck

This compatibility entrypoint delegates to the shared procedure in [verify](../verify/SKILL.md). Read that file and follow its routing, permission, evidence, wrapper, strategy, stopping, and reporting contracts. Do not maintain a second workflow here.

- Claude is the host; Codex is the read-only counterpart. The host owns implementation. In Codex, use the shared entrypoint's model-family routing instead.
- Choose the strategy automatically, within task-scoped reviewer permission; do not ask which method to use. Respect an explicitly selected method.
- Infer the stopping stage from intent: opinions → `analyze`, plans → `plan`, completed work → `verify`, authorized implementation → `full`. Advice does not default to implementation.
- For advice and planning, read the shared [strategy reference](../verify/references/crosscheck-strategies.md). Broad improvement exploration normally uses independent proposals plus mutual review; a concrete draft uses critique; a narrow exploration uses independent proposals.
- Say when an idea is poor value, recommend keeping the current approach when justified, and preserve evidence-based dissent. No mandatory praise, criticism, or consensus.
- Every Codex call goes through this entrypoint's `scripts/codex_ask.sh`, which links to the shared implementation. Keep its read-only sandbox and exact returned session ID; never call `codex exec` directly or recursively invoke crosschecking.

Read the full skill on GitHub

Details

Skill name: crosscheck
Repository: moveju112/skill_verify
Path: skills/crosscheck/SKILL.md
License: MIT
Repo updated: 5 October 2026
Listed in: karanb192/awesome-claude-skills

FAQ

What does the Crosscheck skill do?

How do I install the Crosscheck skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add moveju112/skill_verify --skill crosscheck. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Crosscheck popular?

It lives in moveju112/skill_verify, which has 1 GitHub stars and 0 forks, and is included in 1 curated skill list.

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