Silo Vault.
Turn your folders into private, cited vaults, then hand them to your AI tools.
Silo Vault indexes the folders you pick into named vaults and answers questions about them in Ask, with citations that open the stored passage: a document page or a worksheet cell range. It links the names and terms in your files into a knowledge graph, runs summaries, playbook comparison and clause-level redlines over your documents, moves a vault between Macs as an encrypted .silovault archive, and lets any MCP-compatible tool on this Mac search your vaults through a local stdio server. Before your first question it downloads its local models with your consent; while they download, the built-in sample vault shows three example documents, their graph and a cited answer.
Your vaults live on your Mac. Your answers show their sources.
Nothing uploaded by default.
Indexing, search, cited answers, the MCP server and the optional Timeline run on your Mac with a bundled local runtime. The chat and embedding models download once, after you see their exact size and license: about 3.8 to 5.4 GB depending on your Mac's memory. After that Silo Vault works offline. You can also turn on your own cloud key. It is off by default; while it is on, each Ask question, up to 20 earlier messages of that conversation and the matching excerpts go directly to the provider you chose. Through version 1.12.2 the key also serves summaries, contract review, document comparison and the Source Inspector, and a question asked with Recall on and RAG off can carry matching Timeline moments.
Hand your vaults to your AI tools.
Silo Vault includes a local Model Context Protocol server that speaks stdio only, with no open port and no remote connection. Any MCP-compatible coding or chat tool on this Mac can list your vaults, search them, read cited passages and follow backlinks. The tool starts the server through Silo Vault itself, and Connect AI in the sidebar has the setup block to copy. The passages the server returns go to the tool you connect, which may send them to its own cloud service under its own terms.
Every citation opens its source.
By default, a local model writes each answer from passages retrieved in your vault. Every citation opens the stored passage it came from: a document page or a worksheet cell range. Grounded mode measures how much of an answer those passages cover and holds back a draft that falls short.
Group folders, documents and notes into separate vaults whose results never mix. Inside a vault, live smart collections track new, changed and removed sources, while frozen ones keep an exact snapshot and pause grounded Ask when their evidence drifts.
Let any MCP-compatible tool on this Mac list your vaults, search them and the knowledge graph, read cited passages, follow backlinks and run a summary. The server runs over stdio when the tool starts it: no open network port, no remote connection, no key to manage.
Silo Vault finds names, acronyms and key terms across your indexed documents and links them into an interactive graph with backlinks and per-node drill-down. Extraction is deterministic and needs no chat model. Save any view as Markdown or JSON.
Inside a source, run Explain selection, Explain table or Find anomalies over that document's own indexed passages. Each cited excerpt carries its page or cell range, and when the document does not support an explanation, the Inspector says so. Accepted explanations save as vault notes; your original files are never opened for writing.
Run a summary, FAQ, brief or dated timeline over a vault's documents. A Legal / Contracts vault adds risk flags, clause extraction, a risk dashboard, comparison against your negotiation playbook and clause-level redlines between two versions, and a finished result exports as PDF. They run on your Mac by default; through version 1.12.2 they use your own cloud key while one is on, and later versions keep them on your Mac even then. This is informational document review, not legal advice. To proofread a draft's defined terms, cross-references and numbering, use OhmsCounsel.
Export a vault as a versioned .silovault archive, sealed with AES-256-GCM under a passphrase you choose. Import verifies integrity first, previews naming conflicts, and creates a separate copy instead of overwriting an existing vault.
PDF, DOCX, PPTX, XLSX, HTML, CSV, Markdown and plain text parse on your Mac; PDFs are read from their text layer. Search fuses keyword and local vector results by Reciprocal Rank Fusion, so exact terms and fuzzy meaning both land.
While the models download, open the built-in sample vault: a PDF memo, a spreadsheet budget and Markdown meeting notes, their knowledge graph and a prepared cited answer you can trace to the page and cells. Once the models finish, ask it your own questions, or remove it from the vault bar.
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