Registry indexed
Use the Gemini CLI to consult Gemini and delegate coding tasks for prototyping, debugging, and code review. Supports multi-turn sessions via SESSION_ID. Optimized for low-token, file/line-based handoff.
Use the Gemini CLI to consult Gemini and delegate coding tasks for prototyping, debugging, and code review. Supports multi-turn sessions via SESSION_ID. Optimized for low-token, file/line-based handoff.
Source documentation, not instructions for this website. Review permissions before running any commands.
Use Gemini CLI as a collaborator while keeping Codex as the primary implementer.
Host note: this skill is written for a Codex host. When running in another host (e.g., Claude Code), adapt Codex-specific details such as the command-runner timeout and upload paths.
This skill provides a lightweight bridge script that returns structured JSON and supports multi-turn sessions via SESSION_ID.
gemini directly; always use the bridge script (scripts/gemini_bridge.py) so output/session handling stays consistent.--cd set to the repo root (it sets the gemini process working directory). Use --cd "." only if your CWD is the repo root.SESSION_ID and reuse it for follow-ups to keep the collaboration conversation-aware.timeout_ms to 600000 (10 minutes) unless a shorter/longer timeout is explicitly required.--sandbox to run Gemini in sandbox mode.⚠️ If your prompt contains Markdown backticks (`like/this`), do not pass it directly via --PROMPT "..." (your shell may treat backticks as command substitution). Use a heredoc instead; see references/shell-quoting.md.
PROMPT="$(cat <<'EOF'
Review src/auth.py around login() and propose fixes.
OUTPUT: Unified Diff Patch ONLY.
EOF
)"
python3 .codex/skills/collaborating-with-gemini/scripts/gemini_bridge.py --cd "." --PROMPT "$PROMPT"
Output: JSON with success, SESSION_ID, agent_messages, and optional error / all_messages.
# Start a session
PROMPT="$(cat <<'EOF'
Analyze the bug in foo(). Keep it short.
EOF
)"
python3 .codex/skills/collaborating-with-gemini/scripts/gemini_bridge.py --cd "." --PROMPT "$PROMPT"
# Continue the same session
PROMPT="$(cat <<'EOF'
Now propose a minimal fix as Unified Diff Patch ONLY.
EOF
)"
python3 .codex/skills/collaborating-with-gemini/scripts/gemini_bridge.py --cd "." --SESSION_ID "<SESSION_ID>" --PROMPT "$PROMPT"
Use assets/prompt-template.md as a starter when crafting --PROMPT.
Provide:
Avoid:
Append this to prompts when requesting code:
OUTPUT: Unified Diff Patch ONLY. Strictly prohibit any actual modifications.Gemini can only read files inside the workspace root (--cd). Codex saves clipboard PNGs into the OS temp directory (e.g. ${TMPDIR:-/tmp}), which Gemini can’t access, and it may refuse ignored paths (e.g. tmp/). Copy the image into .codex_uploads/, then reference that path in your prompt. Delete screenshots when done. Do not add .codex_uploads/ to .gitignore: Gemini refuses to read ignored paths.
mkdir -p .codex_uploads && cp "${TMPDIR:-/tmp}"/codex-clipboard-<id>.png .codex_uploads/
--sandbox: Run Gemini in sandbox mode.--model <name>: Override the default Gemini model.--return-all-messages: Include all raw messages (tool calls, traces) in output JSON.Keep this short block updated near the end of your reply while collaborating:
[Gemini Collaboration Capsule]
Goal:
Gemini SESSION_ID:
Files/lines handed off:
Last ask:
Gemini summary:
Next ask:
assets/prompt-template.md (prompt patterns)references/shell-quoting.md (shell quoting/backticks)name: collaborating-with-gemini description: Use the Gemini CLI to consult Gemini and delegate coding tasks for prototyping, debugging, and code review. Supports multi-turn sessions via SESSION_ID. Optimized for low-token, file/line-based handoff. metadata: short-description: Delegate to Gemini CLI
---
name: collaborating-with-gemini
description: Use the Gemini CLI to consult Gemini and delegate coding tasks for prototyping, debugging, and code review. Supports multi-turn sessions via SESSION_ID. Optimized for low-token, file/line-based handoff.
metadata:
short-description: Delegate to Gemini CLI
---
# Collaborating with Gemini (Codex)
Use Gemini CLI as a collaborator while keeping Codex as the primary implementer.
> **Host note**: this skill is written for a Codex host. When running in another host (e.g., Claude Code), adapt Codex-specific details such as the command-runner timeout and upload paths.
This skill provides a lightweight bridge script that returns structured JSON and supports multi-turn sessions via `SESSION_ID`.
## Core rules
- Gemini is a collaborator; you own the final result and must verify changes locally.
- Do not invoke `gemini` directly; always use the bridge script (`scripts/gemini_bridge.py`) so output/session handling stays consistent.
- Prefer file/line references over pasting snippets. Run the bridge with `--cd` set to the repo root (it sets the `gemini` process working directory). Use `--cd "."` only if your CWD is the repo root.
- For code changes, request **Unified Diff Patch ONLY** and forbid direct file modification.
- Always capture `SESSION_ID` and reuse it for follow-ups to keep the collaboration conversation-aware.
- Keep a short **Collaboration State Capsule** updated while this skill is active.
- Default timeout: when invoking via the Codex command runner, set `timeout_ms` to **600000 (10 minutes)** unless a shorter/longer timeout is explicitly required.
- Optional: pass `--sandbox` to run Gemini in sandbox mode.
## Quick start (shell-safe)
⚠️ If your prompt contains Markdown backticks (`` `like/this` ``), do **not** pass it directly via `--PROMPT "..."` (your shell may treat backticks as command substitution). Use a heredoc instead; see `references/shell-quoting.md`.
```bash
PROMPT="$(cat <<'EOF'
Review src/auth.py around login() and propose fixes.
OUTPUT: Unified Diff Patch ONLY.
EOF
)"
python3 .codex/skills/collaborating-with-gemini/scripts/gemini_bridge.py --cd "." --PROMPT "$PROMPT"
```
**Output:** JSON with `success`, `SESSION_ID`, `agent_messages`, and optional `error` / `all_messages`.
## Multi-turn sessions
```bash
# Start a session
PROMPT="$(cat <<'EOF'
Analyze the bug in foo(). Keep it short.
EOF
)"
python3 .codex/skills/collaborating-with-gemini/scripts/gemini_bridge.py --cd "." --PROMPT "$PROMPT"
# Continue the same session
PROMPT="$(cat <<'EOF'
Now propose a minimal fix as Unified Diff Patch ONLY.
EOF
)"
python3 .codex/skills/collaborating-with-gemini/scripts/gemini_bridge.py --cd "." --SESSION_ID "<SESSION_ID>" --PROMPT "$PROMPT"
```
## Prompting patterns (token efficient)
Use `assets/prompt-template.md` as a starter when crafting `--PROMPT`.
### 1) Ask Gemini to open files itself
Provide:
- Entry file(s) and approximate line numbers
- Objective and constraints
- Output format (diff vs analysis)
Avoid:
- Pasting large code blocks
- Multiple competing objectives in one request
### 2) Enforce safe output for code changes
Append this to prompts when requesting code:
- `OUTPUT: Unified Diff Patch ONLY. Strictly prohibit any actual modifications.`
### 3) Use Gemini for what it’s good at
- Alternative solution paths and edge cases
- UI/UX and readability feedback
- Review of a proposed patch (risk spotting, missing tests)
### 4) Sharing clipboard screenshots with Gemini
Gemini can only read files inside the workspace root (`--cd`). Codex saves clipboard PNGs into the OS temp directory (e.g. `${TMPDIR:-/tmp}`), which Gemini can’t access, and it may refuse ignored paths (e.g. `tmp/`). Copy the image into `.codex_uploads/`, then reference that path in your prompt. Delete screenshots when done. **Do not add `.codex_uploads/` to `.gitignore`**: Gemini refuses to read ignored paths.
```bash
mkdir -p .codex_uploads && cp "${TMPDIR:-/tmp}"/codex-clipboard-<id>.png .codex_uploads/
```
## Advanced flags
- `--sandbox`: Run Gemini in sandbox mode.
- `--model <name>`: Override the default Gemini model.
- `--return-all-messages`: Include all raw messages (tool calls, traces) in output JSON.
## Collaboration State Capsule
Keep this short block updated near the end of your reply while collaborating:
```text
[Gemini Collaboration Capsule]
Goal:
Gemini SESSION_ID:
Files/lines handed off:
Last ask:
Gemini summary:
Next ask:
```
## References
- `assets/prompt-template.md` (prompt patterns)
- `references/shell-quoting.md` (shell quoting/backticks)
Skill source recorded
Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.
Review before install: Avoid automatic install
License: MIT
Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.
Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.
Version reported in registry metadata; check source releases before relying on it.
Quality
73/100
Strong
Trust
58/100
This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.
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Audit
77/100
Needs review
Copies are not installs. Installation counts require a reported successful installation; they are not a blanket quality guarantee.