Ghost-Writer Sync

Pulls published blog posts from Substack and Ghost into an Obsidian or Logseq vault for AI-assisted repurposing.

Automatically pulls your published blog posts (Substack / Ghost) into your local Obsidian or Logseq vault for AI-assisted repurposing.

How It Works

Blog Source  →  Fetch Posts  →  HTML → Markdown  →  Write to Vault
(Substack RSS / Ghost API)       (stdlib)         (frontmatter + body)

1. Fetch — Pulls published posts from each configured source
2. Convert — Transforms HTML content to clean Markdown using a stdlib-only converter
3. Write — Saves each post as a Markdown file with rich frontmatter in your vault

Supported Sources

Source	Auth	Notes
Substack	None (public RSS)	Reads the /feed endpoint
Ghost	Content API key (id:secret)	Uses Admin API JWT auth

Output Formats

Format	Frontmatter	Filename
Obsidian	YAML block (--- delimited)	{slug}.md
Logseq	Property list (key:: value)	{date} {slug}.md

Frontmatter Fields

Every synced post includes:

Field	Description
title	Post title
source	substack or ghost
url	Original post URL
published	Publication date
synced	Timestamp of last sync
post_id	Stable hash-based ID for dedup
tags	(Ghost only) Tag names
excerpt	(Ghost only) Post excerpt
feature_image	(Ghost only) Hero image URL

Usage

Add a source

# Substack — just the URL
python3 sync.py add-substack --url https://example.substack.com

# Ghost — URL + API key
python3 sync.py add-ghost --url https://myblog.ghost.io --api-key abc123:def456...

Run a sync

python3 sync.py sync --vault /path/to/obsidian-vault

Check config

python3 sync.py list
python3 sync.py config

Repurposing Workflow

Once posts are in your vault, use your AI assistant to:

• Rewrite posts as Twitter/X threads
• Generate LinkedIn summaries
• Create newsletter compilations
• Extract key quotes and talking points
• Draft follow-up posts based on themes

Posts land as standard Markdown files, so they work with any Obsidian plugin, Logseq graph, or AI tool that reads .md files.