Your knowledge is scattered across hundreds of files. Cloud AI won't read them privately. And it never shows you where the answer came from.
Source-available · Self-hosted · Privacy-first
Your Private AI
Knowledge Companion
Ask about your documents. See verified sources. Watch a wiki of what you know grow — with knowledge stores that stay on your machine.
Or grab the desktop app: macOS (signed & notarized) · Windows
Core — FreeProVault — Enterprise
100%
Private
30+
File Types
1-cmd
Setup
FSL-1.1
Source-Available
See it in action
Live product chrome — claim verification & refutation, snappy Constellation explore, accumulating wiki, disclosed TrustScore, and local sources.
Verified answers, Constellation explore & drill-down, wiki, TrustScore, and key features — captured from the live product.
Claim verification & refutation, map explore, local sources — short cut for social and quick scans.
Self-hosted. Knowledge stores stay local. Source-available under FSL-1.1-ALv2. Get Core free
Interactive demo · synthetic data
Cerid Finance — command center
Explore Overview, Budget Sankey, and 3D net-worth trajectory with fictional household data. Self-host for your real accounts — knowledge stores stay on your machine.
Open Finance demo
finance.cerid.ai · read-only mockup
How it works
One command to start. Ask a question. Get a verified answer.
1
Import your files
Drop a folder or upload files. Cerid parses PDFs, docs, code, emails, and archives automatically.
2
Ask anything
Natural language queries search all your knowledge. Adaptive retrieval matches the right strategy.
3
See which documents answered your question
Inline verification badges on every claim. Click any footnote to see the source and reasoning.
4
Gets smarter over time
Facts, decisions, and preferences are remembered. Each conversation makes the system smarter.
Connect every source of knowledge
22 source connectors out of the box. Webhook receiver, browser extension, voice notes, and first-class Apple Mail + Reminders. Everything streams into the same verified pipeline.
RSS & Atom
URL watch
Bookmarks
Browser extension
Voice notes
Clipboard
Apple Mail
Reminders
Slack / Discord
GitHub / Linear
Sentry / Stripe
Readwise / Pocket
Gmail / Outlook
Custom webhook
+ extensible
Webhooks with HMAC
Stream into Cerid from any service that fires a webhook. Constant-time signature compare, per-source tokens, rotation built in.
Browser extension
Save the page you're reading — and the passage you highlighted — to your private KB in one click. Chrome + Firefox.
Voice notes
Record a quick thought, drop it in, and it transcribes + indexes alongside everything else. ⌘⇧V opens the overlay.
Built for you
Whatever your field, Cerid adapts to how you work.
For people who need to cite sources
See which documents back up every answer — with page-level citations you can verify in seconds.
- Researchers, journalists, and lawyers who can't afford unsourced claims
- Inline footnotes link every statement to the original passage
- Cross-reference findings across thousands of files instantly
For teams that can't risk data leaving
Healthcare, legal, and finance teams get AI answers without uploading a single file to the cloud.
- Everything runs on your machine — documents never leave your network
- No telemetry by default, no cloud dependency
- Fernet-encrypted credentials and full audit logging
For builders who want full control
Self-host with Docker. 55 MCP tools + any external MCP server. 12 specialist agents + a custom-agents builder. 22 source connectors. Bring your own model or run Ollama free.
- Full REST API with versioned /sdk/v1/ surface + Python SDK
- Governed external MCP client — allowlist + per-call audit + kill switch
- Source-available (FSL-1.1-ALv2 → Apache-2.0 after two years) — audit it, extend it, self-host it
Everything you need
Tap any card to learn more. Powerful enough for regulated-deployment intelligence. Simple enough to clone, run, and use.
Know where answers come from
Every answer includes inline citations so you can see exactly which document — and which passage — backs up each claim. Wrong claims get refuted.
Streaming claim verification with verified / partial / refuted outcomes and NLI contradiction gating. 4-type claim detection (factual, recency, evasion, citation). Click any footnote for source, confidence, and reasoning.
See verification flow→
Explore your knowledge as a map
Constellation shows entities and clusters you can zoom, dart, and drill into — hubs, domains, and neighbors with legible labels.
Live knowledge graph UI: Constellation (force layout + modes), Atlas communities, and Open-in-Atlas from any hub. Modes include tight clusters, domains-apart, and semantics. Captured end-to-end in the product sizzle.
See knowledge surfaces→
A wiki that accumulates
Readable entity pages grow from your sources — not one-shot chat dumps. Browse by domain, open an article, return later.
Wiki entities with summary, graph context, co-mentions, references, and verification status. Domain browse (Coding, Mail, Finance, …) plus search. Pages refresh as sources update.
See knowledge surfaces→
Disclosed TrustScore
A single score with open methodology — component tabs, targets, and what to do when a pillar drops.
Straight mean of measured components (no learned weights). Components include DCG, memory recall, verification coverage, and preservation health. Methodology accordion in-product; source documentation linked.
See TrustScore→
Finds the right part of your documents
Ask a question and Cerid pinpoints the most relevant sections across all your files — even when the answer spans multiple documents.
Three RAG modes (Manual, Smart, Custom Smart) with per-chunk retrieval profiles. Hybrid BM25 + vector search. Cross-encoder reranking. Adaptive pipeline adjusts search depth based on question complexity.
See pipeline details→
Works with the AI you choose
Use Claude, GPT, Gemini, Llama, or run a completely free local model with Ollama. Switch anytime — no lock-in.
Smart capability-based routing across OpenRouter providers. Guided Ollama install wizard. 6 of 8 pipeline tasks run locally at $0. Proactive model switching on ignorance detection.
See model routing→
Your knowledge stores stay on your device
Self-hosted by design. No cloud uploads of your corpus; telemetry off by default. Only the query context you choose is sent to your LLM — or nothing, if you run fully local.
Self-hosted Docker stack with ChromaDB, Neo4j, Redis — all on your machine. Optional Fernet encryption at rest. Source-available (FSL-1.1-ALv2).
Connect anything that produces knowledge
22 source connectors out of the box — RSS feeds, web pages, bookmarks, browser extension, voice notes, Apple Mail, Reminders, Slack, GitHub, and more.
22 source kinds across 9 families: web (RSS, URL-watch, bookmarks, browser extension), capture (voice notes, clipboard), Apple ecosystem (Mail, Reminders), chat (Slack, Discord, Teams, Matrix), dev events (GitHub, Linear, Sentry, Stripe), reader apps (Readwise, Pocket, Instapaper, Raindrop), email (Gmail, Outlook). Webhook receiver with HMAC + token auth; OAuth scaffold for Google + Microsoft. Per-source retention + quality floors.
See every source→Privacy by design
Your knowledge base stays on your machine. Telemetry is opt-in and disabled by default.
- Knowledge stores stay on your machine — self-hosted by design
- Encrypted at rest for sensitive knowledge bases
- Free local AI option — no API costs required
- Source-available (FSL) — audit every line of code
- Smart model routing — always the right model for the task
Stored locally
Your documents, embeddings, and metadata stay on your machine.
Encrypted at rest
API keys and credentials protected with Fernet encryption.
Source-available
FSL-1.1-ALv2 — audit every line; each release converts to Apache-2.0 after two years.
Start with one command
Clone the repo, run the setup script, and your private AI companion is ready.
Terminal
$ git clone https://github.com/Cerid-AI/cerid-ai.git
$ cd cerid-ai && ./scripts/start-cerid.sh
$ cd cerid-ai && ./scripts/start-cerid.sh