kendreaditya/substack
claude/skills/substack/SKILL.md
Search Substack newsletters, read posts, browse categories, and get user profiles via the substack CLI. Triggers: 'substack', 'newsletter search', 'substack posts', 'browse newsletters', 'substack categories', 'read substack article', 'substack trending', 'newsletter recommendations'.
tools
Updated Apr 17, 2026
$ install --global
skillsauthnpx skillsauth add kendreaditya/.config substackInstall 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 25, 2026, 9:35 PM1.8s1 file scanned
SKILL.md
- name:
- substack
- description:
- Search Substack newsletters, read posts, browse categories, and get user profiles via the substack CLI. Triggers: 'substack', 'newsletter search', 'substack posts', 'browse newsletters', 'substack categories', 'read substack article', 'substack trending', 'newsletter recommendations'.
Substack
Requires substack CLI (uv tool install substack-api). No API keys for public content. All output is JSON — pipe through jq to filter.
Newsletter posts
# Recent posts
substack newsletter posts https://example.substack.com --limit 5
# Top posts by popularity
substack newsletter posts https://example.substack.com --sort top --limit 10
# Other sort options: new (default), top, pinned, community
Search within a newsletter
substack newsletter search https://example.substack.com "machine learning" --limit 5
Search is per-newsletter only — no global cross-publication search.
Read a post
# Metadata (title, date, reactions, restacks, description)
substack post metadata https://example.substack.com/p/post-slug --pretty
# Full HTML body
substack post content https://example.substack.com/p/post-slug
# Check if paywalled
substack post paywalled https://example.substack.com/p/post-slug
To convert HTML content to markdown: pipe through pandoc.
substack post content https://example.substack.com/p/post-slug | python3 -c "import json,sys; print(json.load(sys.stdin))" | pandoc -f html -t markdown
Browse categories
# List all categories
substack categories
# Newsletters in a category
substack category newsletters --name Technology
substack category newsletters --name Technology --metadata # full metadata
# Also by ID
substack category newsletters --id 5
Podcast episodes
substack newsletter podcasts https://example.substack.com --limit 5
Newsletter recommendations
substack newsletter recs https://example.substack.com
Newsletter authors
substack newsletter authors https://example.substack.com
User profiles
substack user info username
substack user subscriptions username
# Resolve renamed handles
substack resolve-handle oldusername
Paywalled content
Requires session cookies exported from your browser:
substack --cookies ~/cookies.json post content https://example.substack.com/p/paid-post
substack --cookies ~/cookies.json newsletter posts https://example.substack.com --limit 5
jq patterns
# Extract just titles and URLs from posts
substack newsletter posts https://example.substack.com --limit 10 \
| jq '.[] | {title, slug, date: .post_date[:10], hearts: .reactions["❤"]}'
# Get newsletter URLs from a category
substack category newsletters --name Technology \
| jq -r '.[].base_url'
# Search and get post URLs
substack newsletter search https://example.substack.com "AI" --limit 5 \
| jq -r '.[] | .canonical_url'
Limits
- 2-second built-in delay between API calls (polite rate limiting)
- Category listing maxes at ~21 pages
- Search is per-newsletter, not cross-publication
--prettyflag for human-readable JSON output
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