mrclrchtr/stitch-downloader
skills/stitch-downloader/SKILL.md
Download Stitch (stitch.withgoogle.com) screen screenshots at best quality from `screenshot.downloadUrl` (often `lh3.googleusercontent.com`). Use to normalize googleusercontent size parameters from canvas dimensions, download with curl, optionally verify pixel dimensions, and avoid committing signed URLs.
$ install --global
skillsauthnpx skillsauth add mrclrchtr/skills stitch-downloaderInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 20, 2026, 6:16 AM11.9s3 files scanned
SKILL.md
- name:
- stitch-downloader
- description:
- Download Stitch (stitch.withgoogle.com) screen screenshots at best quality from `screenshot.downloadUrl` (often `lh3.googleusercontent.com`). Use to normalize googleusercontent size parameters from canvas dimensions, download with curl, optionally verify pixel dimensions, and avoid committing signed URLs.
Stitch Downloader
Quick start (googleusercontent)
Use scripts/download-googleusercontent.sh to force full-resolution downloads from lh3.googleusercontent.com by appending =w{width}-h{height}.
./skills/stitch-downloader/scripts/download-googleusercontent.sh \
"$SCREENSHOT_URL" \
2560 \
2048 \
"docs/stitch/exports/2026-02-23--p123/wt-01--p123--sabc123--2560x2048.png"
- Pass the canvas size (not the viewport size). If you don’t know it, fetch screen metadata first.
- The script prints a short SHA256 fingerprint of the URL so you can correlate downloads without saving the signed URL.
MCP-assisted flow (from ids)
If you have MCP tools for Stitch available, fetch the screenshot.downloadUrl and canvas dimensions first, then download.
- List screens and pick a
screenId:
mcp__stitch__list_screens({ projectId: "<project_id>" })
- Fetch metadata for that screen:
mcp__stitch__get_screen({ projectId: "<project_id>", screenId: "<screen_id>", name: "projects/<project_id>/screens/<screen_id>" })
- Use the returned canvas
width/heightwith the downloader script.
Guardrails
- Do not commit signed URLs (including
screenshot.downloadUrl) to git. - Commit only the downloaded image file(s) if the user wants them checked in.
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