Gemini Web Client

Text/image generation via Gemini Web API. Supports reference images and multi-turn conversations.

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 SKILL_DIR

• Script path = ${SKILL_DIR}/scripts/<script-name>.ts

• Replace all ${SKILL_DIR} in this document with the actual path

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)

Use Bash to check EXTEND.md existence (priority order):

Check project-level first

test -f .baoyu-skills/baoyu-danger-gemini-web/EXTEND.md && echo "project"

Then user-level (cross-platform: $HOME works on macOS/Linux/WSL)

test -f "$HOME/.baoyu-skills/baoyu-danger-gemini-web/EXTEND.md" && echo "user"

┌──────────────────────────────────────────────────────────┬───────────────────┐ │ Path │ Location │ ├──────────────────────────────────────────────────────────┼───────────────────┤ │ .baoyu-skills/baoyu-danger-gemini-web/EXTEND.md │ Project directory │ ├──────────────────────────────────────────────────────────┼───────────────────┤ │ $HOME/.baoyu-skills/baoyu-danger-gemini-web/EXTEND.md │ User home │ └──────────────────────────────────────────────────────────┴───────────────────┘

┌───────────┬───────────────────────────────────────────────────────────────────────────┐ │ Result │ Action │ ├───────────┼───────────────────────────────────────────────────────────────────────────┤ │ Found │ Read, parse, apply settings │ ├───────────┼───────────────────────────────────────────────────────────────────────────┤ │ Not found │ Use defaults │ └───────────┴───────────────────────────────────────────────────────────────────────────┘

EXTEND.md Supports: Default model | Proxy settings | Custom data directory

Usage

Text generation

npx -y bun ${SKILL_DIR}/scripts/main.ts "Your prompt" npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "Your prompt" --model gemini-3-flash

Image generation

npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "A cute cat" --image cat.png npx -y bun ${SKILL_DIR}/scripts/main.ts --promptfiles system.md content.md --image out.png

Vision input (reference images)

npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "Describe this" --reference image.png npx -y bun ${SKILL_DIR}/scripts/main.ts --prompt "Create variation" --reference a.png --image out.png

Multi-turn conversation

npx -y bun ${SKILL_DIR}/scripts/main.ts "Remember: 42" --sessionId session-abc npx -y bun ${SKILL_DIR}/scripts/main.ts "What number?" --sessionId session-abc

JSON output

npx -y bun ${SKILL_DIR}/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

Reference images for vision input

--sessionId

Session ID for multi-turn conversation

--list-sessions

List saved sessions

--json

Output as JSON

--login

Refresh cookies, then exit

--cookie-path

Custom cookie file path

--profile-dir

Chrome profile directory

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.

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.