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+---
+date: 2026-03-20T13:02:00.000Z
+title: Memex Chat - Obsidian Plugin I built for myself
+summary: Memex Chat is an Obsidian plugin that lets you chat with your vault using Claude AI with proper context retrieval, not just keyword search.
+category:
+  - dev
+  - indieweb
+  - on/memex
+gardenStage: revisit
+visibility: Public
+aiTextLevel: "1"
+aiCodeLevel: "2"
+aiTools: Claude
+mpUrl: https://blog.giersig.eu/articles/memex-chat-obsidian-plugin-i/
+permalink: /articles/memex-chat-obsidian-plugin-i/
+---
+
+Memex Chat is an Obsidian plugin that lets you chat with your vault using Claude AI with proper context retrieval, not just keyword search.
+
+* * *
+
+What it does:
+
+*   Semantic vault search: a TF-IDF index over all your notes, no external API needed for retrieval
+*   Local embeddings: optional on-device semantic search using BGE Micro v2, fully offline after one model download (~22 MB)
+*   Auto context: relevant notes are automatically found and attached to your query before it even reaches Claude
+*   @ mentions: reference specific notes directly in your message with autocomplete
+*   Context preview: see and edit which notes are included before sending
+*   Related notes sidebar: always-on panel showing the most similar notes to whatever you have open, ranked by semantic similarity, frontmatter links, and shared tags
+*   Thread history: chats saved as Markdown in your vault, so nothing disappears
+*   Source links: every answer shows which notes were used as context
+*   Prompt buttons: configurable header buttons that extend Claude’s system prompt (e.g. draft check, monthly review)
+*   Installation is manual for now: download main.js, manifest.json, and styles.css from the latest release, drop them into .obsidian/plugins/memex-chat/, enable in Community Plugins, and add your Anthropic API key.
+
+→ https://github.com/svemagie/obsidian-memex-chat