Gemini Web Client
Text/image generation via Gemini Web API. Supports reference images and multi-turn conversations.
User Input Tools
When this skill prompts the user, follow this tool-selection rule (priority order):
- Prefer built-in user-input tools exposed by the current agent runtime — e.g.,
AskUserQuestion, request_user_input, clarify, ask_user, or any equivalent.
- Fallback: if no such tool exists, emit a numbered plain-text message and ask the user to reply with the chosen number/answer for each question.
- Batching: if the tool supports multiple questions per call, combine all applicable questions into a single call; if only single-question, ask them one at a time in priority order.
Concrete AskUserQuestion references below are examples — substitute the local equivalent in other runtimes.
Script Directory
Important: All scripts are located in the scripts/ subdirectory of this skill.
Agent Execution Instructions:
- Determine this SKILL.md file's directory path as
{baseDir}
- Script path =
{baseDir}/scripts/<script-name>.ts
- Resolve
${BUN_X} runtime: if bun installed → bun; if npx available → npx -y bun; else suggest installing bun
- Replace all
{baseDir} and ${BUN_X} in this document with actual values
Script Reference:
| Script | Purpose |
|---|
scripts/main.ts | CLI entry point for text/image generation |
scripts/gemini-webapi/* | TypeScript port of gemini_webapi (GeminiClient, types, utils) |
Consent Check (REQUIRED)
Before first use, verify user consent for reverse-engineered API usage.
Consent file locations:
- macOS:
~/Library/Application Support/baoyu-skills/gemini-web/consent.json
- Linux:
~/.local/share/baoyu-skills/gemini-web/consent.json
- Windows:
%APPDATA%\baoyu-skills\gemini-web\consent.json
Flow:
- Check if consent file exists with
accepted: true and disclaimerVersion: "1.0"
- If valid consent exists → print warning with
acceptedAt date, proceed
- If no consent → show disclaimer, ask user via
AskUserQuestion:
- "Yes, I accept" → create consent file with ISO timestamp, proceed
- "No, I decline" → output decline message, stop
- Consent file format:
{"version":1,"accepted":true,"acceptedAt":"<ISO>","disclaimerVersion":"1.0"}
Preferences (EXTEND.md)
Check EXTEND.md in priority order — the first one found wins:
| Priority | Path | Scope |
|---|
| 1 | .baoyu-skills/baoyu-danger-gemini-web/EXTEND.md | Project |
| 2 | ${XDG_CONFIG_HOME:-$HOME/.config}/baoyu-skills/baoyu-danger-gemini-web/EXTEND.md | XDG |
| 3 | $HOME/.baoyu-skills/baoyu-danger-gemini-web/EXTEND.md | User home |
If none found, use defaults.
EXTEND.md supports: Default model, proxy settings, custom data directory.
Usage
# Text generation
${BUN_X} {baseDir}/scripts/main.ts "Your prompt"
${BUN_X} {baseDir}/scripts/main.ts --prompt "Your prompt" --model gemini-3-flash
# Image generation
${BUN_X} {baseDir}/scripts/main.ts --prompt "A cute cat" --image cat.png
${BUN_X} {baseDir}/scripts/main.ts --promptfiles system.md content.md --image out.png
# Vision input (reference images)
${BUN_X} {baseDir}/scripts/main.ts --prompt "Describe this" --reference image.png
${BUN_X} {baseDir}/scripts/main.ts --prompt "Create variation" --reference a.png --image out.png
# Multi-turn conversation
${BUN_X} {baseDir}/scripts/main.ts "Remember: 42" --sessionId session-abc
${BUN_X} {baseDir}/scripts/main.ts "What number?" --sessionId session-abc
# JSON output
${BUN_X} {baseDir}/scripts/main.ts "Hello" --json
Options
| Option | Description |
|---|
--prompt, -p | Prompt text |
--promptfiles | Read prompt from files (concatenated) |
--model, -m | Model: gemini-3-pro (default), gemini-3-flash, gemini-3-flash-thinking, gemini-3.1-pro-preview |
--image [path] | Generate image (default: generated.png) |
--reference, --ref |
Models
| Model | Description |
|---|
gemini-3-pro | Default, latest 3.0 Pro |
gemini-3-flash | Fast, lightweight 3.0 Flash |
gemini-3-flash-thinking | 3.0 Flash with thinking |
gemini-3.1-pro-preview | 3.1 Pro preview (empty header, auto-routed) |
Authentication
First run opens browser for Google auth. Cookies cached automatically.
When no explicit profile dir is set, cookie refresh may reuse an already-running local Chrome/Chromium debugging session tied to a standard user-data dir.
Set --profile-dir or GEMINI_WEB_CHROME_PROFILE_DIR to force a dedicated profile and skip existing-session reuse.
This is a best-effort CDP session reuse path, not the Chrome DevTools MCP prompt-based --autoConnect flow described in Chrome's official docs.
Supported browsers (auto-detected): Chrome, Chrome Canary/Beta, Chromium, Edge.
Force refresh: --login flag. Override browser: GEMINI_WEB_CHROME_PATH env var.
Environment Variables
| Variable | Description |
|---|
GEMINI_WEB_DATA_DIR | Data directory |
GEMINI_WEB_COOKIE_PATH | Cookie file path |
GEMINI_WEB_CHROME_PROFILE_DIR | Chrome profile directory |
GEMINI_WEB_CHROME_PATH | Chrome executable path |
HTTP_PROXY, HTTPS_PROXY | Proxy for Google access (set inline with command) |
Sessions
Session files stored in data directory under sessions/<id>.json.
Contains: id, metadata (Gemini chat state), messages array, timestamps.
Extension Support
Custom configurations via EXTEND.md. See Preferences section for paths and supported options.
