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CDP browser screenshots for capturing authenticated web pages. Use when you need pixel-perfect PNG screenshots of authenticated sites like Google Sheets, dashboards, or admin panels.
Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.
SOC 직업 분류 기준
| name | snapper |
| description | CDP browser screenshots for capturing authenticated web pages. Use when you need pixel-perfect PNG screenshots of authenticated sites like Google Sheets, dashboards, or admin panels. |
| allowed-tools | Bash(guppi-snapper:*) |
| version | 0.1.2 |
| author | Sam Dengler |
| license | MIT |
Captures pixel-perfect PNG screenshots of authenticated web pages using Playwright's bundled Chromium with CDP (Chrome DevTools Protocol). Launches a persistent Chromium instance with named profiles so logins survive across sessions.
guppi-snapper initSet up snapper: install Playwright's bundled Chromium and create the directory structure (profiles, extensions). Run once after installing snapper.
guppi-snapper start [--profile NAME] [--port PORT]Launch Chromium with CDP enabled using a named profile.
Options:
--profile / -p — profile name (default: default)--port — CDP port (default: 9222)guppi-snapper status [--port PORT]Check if Chromium is running with CDP and show connection info.
Options:
--port — CDP port to check (default: 9222)guppi-snapper stopGracefully shut down the CDP Chromium instance.
guppi-snapper capture URL [--output FILE] [--viewport WxH] [--resize WxH] [--wait SECONDS] [--existing] [--port PORT]Navigate to a URL and capture a screenshot.
Arguments:
url — the URL to capture (or URL pattern with --existing)Options:
--output / -o — output file path (default: screenshot.png)--viewport / -v — viewport dimensions (default: 1400x1365)--resize / -r — resize to WxH after capture (requires ImageMagick)--wait / -w — seconds to wait after load (default: 5)--existing / -e — capture an already-open tab matching URL pattern instead of navigating. Preserves cell selection, scroll position, and UI state.--port — CDP port (default: 9222)guppi-snapper batch CONFIG_FILECapture multiple screenshots from a YAML config file.
Arguments:
config_file — path to YAML configguppi-snapper profile listList available profiles with name, last modified, and size.
guppi-snapper profile create NAMECreate a new empty profile directory.
guppi-snapper profile delete NAME [--yes]Delete a profile directory (with confirmation).
# First-time setup
guppi-snapper init
# Start Chromium with default profile
guppi-snapper start
# Navigate to URL and capture
guppi-snapper capture https://docs.google.com/spreadsheets/d/ID/edit \
--output sheet.png --viewport 1400x1365 --resize 1120x1092 --wait 8
# Capture existing tab (preserves cell selection state)
guppi-snapper capture spreadsheets \
--existing --output selected.png --viewport 1400x1365 --resize 1120x1092 --wait 3
# Batch capture from config
guppi-snapper batch screenshots.yaml
# Manage profiles
guppi-snapper profile list
guppi-snapper profile create myproject
guppi-snapper skill install # Register with guppi-cli
guppi-snapper skill show # Display SKILL.md contents
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