Open Source Silica Agent: AI That Safely Edits, Links, and Dedupes Your Markdown Vault
Cryvixx · reddit · 2026-08-01
Silica is an open-source local knowledge base agent (AGPL) designed to automatically organize, link, and deduplicate existing Markdown notes (like Obsidian vaults).
Core Features:
- Automated Ingestion: Drop clippings, drafts, or PDFs into the Inbox; the system distills them into atomic notes and checks against existing content to prevent duplication.
- Smart Curation: Supports auto-linking, intent-based reclassification, and generating knowledge graph reports (showing hubs, bridges, and orphans).
- Safe Undo: Offers /undo and /revert commands with optional Git commits for every write, ensuring AI missteps are rollbackable.
Technical Highlights:
- Compiler-like Write Path: Unlike most append-only AI tools, Silica directly edits existing notes. It uses a "model proposes -> applies -> verifies -> rolls back if broken" mechanism to maintain link integrity.
- No Database: Operates purely on plain Markdown files; if you stop using Silica, your notes remain perfectly intact.
- Hybrid Search: Fuses Embeddings, a co-occurrence concept graph, and BM25. Retrieval degrades gracefully rather than failing if the model server is down.
- Model Agnostic: Built on LiteLLM, supporting OpenAI, Gemini, and fully local models via Ollama.
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