substack — read & publish on Substack via your own cookies

Drives the user's real Substack account through the same internal web API the site uses (Substack has no official public write API), authenticated by the login cookie they captured with the ACE extension. No browser, no third-party deps — just urllib. The publish flow mirrors the community python-substack library: create draft → prepublish → publish.

The connector injects the cookie jar as an env var:

• SUBSTACK_COOKIES — a JSON array of cookies (substack.sid, substack.lli, …). Secret — never echo or print it. Substack authenticates writes with the session cookie alone (no CSRF token header needed).

CLI

The skill ships scripts/substack.py — self-contained, stdlib only.