update-substack-archive - SKILL.md Agent Skill

name: update-substack-archive description: Pull latest Alexey On Data Substack posts and update the local archive files. Use when the user asks to pull latest Substack articles, update the Substack archive, refresh substack.csv, or update articles/substack-archive-index.md.

Update Substack Archive

Update the local lookup index for published posts on alexeyondata.substack.com.

Files

articles/substack-archive-index.md: human-readable archive table with dates, URLs, and searchable descriptions
substack.csv: compact URL/title/description list used by tooling or ad hoc lookup
articles/_index.md: root article index entry for Substack Archive Index

Workflow

Run scripts/update-substack-archive.py missing to list feed items not yet in the archive.
Compare feed URLs against articles/substack-archive-index.md.
Add only missing posts, newest first.
Bump updated: in articles/substack-archive-index.md to today's date.
Update the Substack Archive Index row in articles/_index.md with the same date.
Add the missing posts near the top of substack.csv, after the header.
Run scripts/update-substack-archive.py validate.
Check git diff -- articles/substack-archive-index.md articles/_index.md substack.csv is scoped to archive updates.

Description Style

For articles/substack-archive-index.md, prefer searchable descriptions over RSS subtitles. Include named tools, libraries, projects, products, and workflows mentioned by the post when known.

For substack.csv, use the RSS description unless it is malformed. Keep it compact and CSV-safe.

Commands

python scripts/update-substack-archive.py missing

python scripts/update-substack-archive.py validate

python scripts/update-substack-archive.py feed