img402/github-image-hosting
skills/github-image-hosting/SKILL.md
Upload images to img402.dev for embedding in GitHub PRs, issues, and comments. Free tier (1MB, 7-day, no auth) is the default; paid tiers add 5MB max with 1-year ($0.01) or permanent ($1) retention via x402. Use when the agent needs to share an image in a GitHub context — screenshots, mockups, diagrams, or any visual. Triggers: "screenshot this", "attach an image", "add a screenshot to the PR", "upload this mockup", or any task producing an image for GitHub.
development
Updated Jun 10, 2026
$ install --global
skillsauthnpx skillsauth add img402/skills github-image-hostingInstall 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: Jun 10, 2026, 8:01 AM72.7s1 file scanned
SKILL.md
- name:
- github-image-hosting
- description:
- >
- visual. Triggers:
- screenshot this", "attach an image", "add a screenshot to
Image Upload for GitHub
Upload an image to img402.dev and embed the returned URL in GitHub markdown.
Pick a tier
| Tier | Price | Max size | Retention | Use when | |------|-------|----------|-----------|----------| | Free | $0 | 1 MB | 7 days | PR review screenshots, issue comments, draft mockups | | 1-year | $0.01 USDC | 5 MB | 1 year | README diagrams, architecture docs | | Permanent | $1.00 USDC | 5 MB | Permanent* | README hero images, public blog post visuals |
* Service-life retention with a 90-day on-site shutdown notice — see Terms § 2A.
Quick reference
# Upload (multipart)
curl -s -X POST https://img402.dev/api/free -F image=@/tmp/screenshot.png
# Response
# {"url":"https://i.img402.dev/aBcDeFgHiJ.png","id":"aBcDeFgHiJ","contentType":"image/png","sizeBytes":182400,"expiresAt":"2026-02-17T..."}
Workflow
- Get image: Use an existing file, or capture a screenshot:
screencapture -x /tmp/screenshot.png # macOS — full screen screencapture -xw /tmp/screenshot.png # macOS — frontmost window - Verify size: Must be under 1MB. If larger, resize:
sips -Z 1600 /tmp/screenshot.png # macOS — scale longest edge to 1600px - Upload:
curl -s -X POST https://img402.dev/api/free -F image=@/tmp/screenshot.png - Embed the returned
urlin GitHub markdown:
GitHub integration
Use gh CLI to embed images in PRs and issues:
# Add to PR description
gh pr edit --body "$(gh pr view --json body -q .body)
"
# Add as PR comment
gh pr comment --body ""
# Add to issue
gh issue comment 123 --body ""
Constraints
- Max size: 1MB
- Retention: 7 days
- Formats: PNG, JPEG, GIF, WebP
- Rate limit: 1,000 free uploads/day (global)
- No auth required
Tips
- Prefer PNG for UI screenshots (sharp text). Use JPEG for photos.
- If a screenshot is too large, reduce dimensions with
sips -Z 1600before uploading. - When adding to a PR body or comment, use
gh pr commentorgh pr editwith the image markdown.
Paid tiers
For larger or longer-lived images, pay via x402 for a token, then upload with the token:
# Step 1: Get an upload token
POST https://img402.dev/api/upload/token # $0.01 USDC → 1-year retention
POST https://img402.dev/api/upload/token/permanent # $1.00 USDC → permanent retention
# → {"token": "a1b2c3...", "expiresAt": "..."}
# Step 2: Upload with the token
curl -s -X POST https://img402.dev/api/upload \
-H "X-Upload-Token: a1b2c3..." \
-F image=@/tmp/screenshot.png
# → {"url":"...", "expiresAt":"..."|null} # null = permanent
x402 payment is handled by an x402-capable client (the Payments MCP tool, @x402/client, or similar). See https://img402.dev/blog/paying-x402-apis.
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