Substack Assistant - Word Basket

Substack has a culture where readers actually talk to writers. But have you ever forgotten who introduced themselves in a follow festival, or what someone said in the comments last week? Substack Assistant is a single sidepanel-based Chrome extension that helps you both remember the people you meet on Substack (reading side) and prepare your own posts for publishing (writing side). ────────────────────────────────── 📒 Contact Memo (reading side) A memo widget appears directly on every Substack profile page. - Free-form notes + tags (e.g. VIP, AI-related, regular commenter) - "Add to history" — capture the comment body, URL, and context with one click - Re-visit a profile and your past memos + interaction history appear instantly - Memo widget auto-syncs to the profile's brand color The sidepanel manages all your contacts in one place: - Active / Archived / Bookmarks tab switch - Cross-search by name, tag, or memo content - Pin favorites to the top - JSON export / import for backup Bookmarks: a one-click button on any post saves its body, URL, and title forever. Solves "what was that great comment from last week?" once and for all. ────────────────────────────────── ✍️ Writing Assist (writing side) Inside the Substack post editor (/publish/post/), the sidepanel exposes 5 tools: 1. Live word count + reading time — auto-updates every 4 seconds while you type. 2. Pre-publish checklist — body length, headings, image alts, internal / external links, opening hook, long paragraphs (8 signals) with a traffic-light status. 3. AI Search Optimization Score — 7-signal heuristic (0–100, grade A–D) that scores how well your post is structured for retrieval-style AI search (Perplexity, ChatGPT search, Claude). Each row has a "?" button that expands an inline panel explaining what the signal measures, the full-marks condition, and your specific result. 4. AI SEO suggest — sends the article body to your chosen AI provider (Anthropic / OpenAI / Google, BYO API key) and returns 3 SEO title and 3 SEO description candidates. Click any candidate to copy. 5. Auto Table of Contents — scans h2 / h3 / h4 headings and inserts a hyperlinked, properly nested TOC into the editor with one click. ────────────────────────────────── ✨ Highlights - Completely free — no feature gating, no ads - Data lives in Chrome's standard sync storage; no external server - Multi-device sync via your Chrome account - Japanese / English UI (toggle in settings) 🔒 Privacy - Contact Memo / bookmarks / settings are stored only in chrome.storage.sync - The extension never silently transmits the URLs or content of pages you browse - The SEO suggest feature, only when you explicitly press the button, sends the editor's title and body to the AI provider you have configured (Anthropic / OpenAI / Google) using your own API key - API keys are stored in chrome.storage.local — local-only, never synced across devices - Privacy policy: [PRIVACY_POLICY_URL] 💚 Made for - Substack newcomers who want to remember everyone they meet in follow festivals - "Super readers" who navigate overseas Substack publications - Writers who keep forgetting to set SEO and run pre-publish checks - Anyone wanting their posts to be cited by Perplexity / ChatGPT search / Claude ────────────────────────────────── Built by South — Half Your Work With AI Newsletter: https://south0120.substack.com