Open Source · MIT · Cognitive OS

Your second brain,finally open source.

Capture everything you see, hear, and read — Serpaix builds a living knowledge graph and reasons over it. Local-first. Open source.

Auto-inferred knowledge graph
Specialized AI agents
Connect your entire PC
On-device PII redaction
WindowsmacOSLinuxiOSAndroidWebChromeRaycastCLI
Why Serpaix

The key ideas behind Serpaix

A cognitive operating system built on three principles — local-first, open source, and designed around how your memory actually works.

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Backend services
In the public monorepo
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Apps & surfaces
Web, desktop, mobile, CLI…
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Shared packages
MIT-licensed primitives
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Languages
Voice transcription

Capture everything

Voice, screen, clipboard, documents, meetings — Serpaix turns the raw stream of your day into structured memory, locally.

Connect with a knowledge graph

Every note, person, file, and event is auto-linked. Relationships are inferred across domains — not just folders.

Reason over your own data

Graph-RAG answers cite the source memories. Run on a hosted provider, or fully local with Ollama for zero data egress.

You already know this feeling

Three problems that steal
hours from every knowledge worker.

Not because they're lazy. Because no single tool was built to solve all three — until now.

> Knowledge Fragmentation

The Tab Graveyard

You have a browser full of open tabs, two or three note apps, an email thread, and a long doc — and none of them talk to each other. When you need that thing you read weeks ago, it's just gone.

> Passive Forgetting

The Context Switch

Your workday happens across meetings, DMs, calls, and documents. You capture fragments of decisions in scattered apps. By the end of the week, reconstructing the reasoning behind a choice is harder than making it.

> Reasoning at Scale

The Forgetting Curve

You read all year. You highlighted, saved, clipped. But ask yourself honestly: how much do you actually remember? How many connections have you drawn? The information is there — the knowledge isn't.

Serpaix was built to end all three — permanently. It captures everything, connects knowledge automatically, and ensures nothing valuable is ever forgotten.

The foundation

Everything you need to know
before you scroll further.

Three ways to understand the platform — pick the angle that fits you.

Universal Capture

Everything you experience, automatically captured.

  • Voice → transcript with speaker diarization in seconds
  • Screen + clipboard captured via Rust daemon (5s intervals)
  • Full PC Connect — all files, folders, and drives become searchable knowledge
  • PII stripped in Rust before any data leaves device

AI Knowledge Base

Your data answers your questions.

  • Multi-hop RAG across connected graph nodes
  • Hybrid search: pgvector (semantic) + full-text (keyword) + graph traversal
  • Auto-flashcards with FSRS-4.5 spaced repetition
  • Switch AI providers without code changes

Graph-Native Memory

Connections you never knew you had.

  • Auto-inferred relationships with confidence scoring (0–1.0)
  • Temporal causality engine: A led to B, years apart
  • Contradiction detection across the full knowledge base
  • Graph evolution: connections strengthen or decay over time

Live Preview

Every platform. One brain.

The same cognitive engine runs across desktop, mobile, and web — with full feature parity and local-first storage on every device.

Platform Deep Dive

Nine capabilities.
One intelligent system.

Universal Capture

Everything you experience,
automatically captured.

8 capture modes ensure no knowledge is ever lost. Voice notes, web clipping, email forwarding, PDF import, screenshot OCR, YouTube transcription, clipboard monitoring, and direct API ingestion.

  • Obsidian vault import — 1,247 notes, wiki-links, YAML frontmatter preserved
  • Browser extension with 7 modes: Article, Selection, Screenshot, Full Page, Simplified, URL, Bookmark
  • Email any content to your @serpaix.me address for automatic ingestion
  • Groq Whisper + Deepgram Nova-2 + AssemblyAI — 50+ languages with quality voting
  • PDF import with full-text OCR and entity extraction on-device
Deep dive
Obsidian Import Assistant
Scanning vault: ~/Documents/Second Brain/
✓ .md files found
✓ Wiki-links resolved
✓ Dataview blocks converted
Hidden connections discovered across the graph
Import complete · Ready to query

Integrations

Connects to your
entire stack.

Plus 17 MCP tools for Claude Desktop, Cursor, and any AI client. REST API with webhooks.

OpenAI GPT-4
Anthropic Claude
Google Gemini
Groq
Ollama (local)

17 MCP Tools · REST API · Webhooks · Plugin Marketplace

Give Claude Desktop, Cursor, and your own tools direct access to your knowledge base.

Built for everyone who thinks for a living

Serpaix adapts to
how you work.

A Cognitive OS for researchers, developers, teams, and enterprise IT — one knowledge base, four ways to work.

Researchers

The researcher's second brain.

Capture papers, interviews, and field notes in any format. Let the knowledge graph reveal hidden connections between your sources. FSRS-4.5 ensures key ideas stay with you — not just your archive.

  • Import academic PDFs and papers with OCR extraction
  • Auto-link citations, concepts, and author entities
  • FSRS spaced repetition ensures you retain what you read
  • AI chat grounded in your literature review, not the internet
847 auto-linked connections4x better retention vs. passive reading
See Serpaix for Researchers
Developers

Stop re-searching the same threads.

Capture your learnings, architecture decisions, and code snippets. Use the MCP server to give Claude Desktop direct access to your technical knowledge base.

  • MCP server: Claude Desktop queries your knowledge base mid-conversation
  • CLI standup generator: 'serpaix recap' from your terminal
  • Architecture decision records auto-captured from code comments
  • REST API with scoped keys for custom integrations
17 MCP tools3-second standup generation via CLI
See Serpaix for Developers
Teams

Team knowledge that stays organized.

Build a shared knowledge base that actually stays organized. Real-time collaboration with Yjs CRDT. Connect Slack, Jira, and GitHub so team decisions are automatically captured.

  • Yjs CRDT real-time collaborative editing with conflict resolution
  • Slack, Jira, GitHub integrations auto-capture decisions
  • Pipes automation sends morning briefings to the whole team
  • Shared workspaces with permission-scoped access
Real-time collaborationMorning briefings auto-generated
See Serpaix for Teams
Enterprise IT

SSO in under one hour.

SAML 2.0 SSO from Okta or Azure AD in under an hour. Automated user provisioning via SCIM 2.0. IP allowlisting, HIPAA controls, and comprehensive audit logs for security team review.

  • SAML 2.0 SSO: Okta, Azure AD, ADFS — setup in < 1 hour
  • SCIM 2.0: automated user lifecycle management from your IdP
  • IP allowlisting with CIDR-based access control
  • HIPAA controls + immutable audit logs for SIEM export
< 1 hour SSO deploymentSOC 2 / HIPAA / GDPR ready
Talk to Enterprise Sales

From the community

Quotes are coming from real people.

We're running a private alpha with a small group of researchers, writers, and engineers. We won't ship quotes here until we have named, consented partners happy to stand behind them.

Design Partner Program

Be an early design partner

We're working with a handful of teams before opening the public beta. If capturing and reasoning over a year of your own notes sounds useful, we'd love to hear from you.

> Awaiting real testimonials

Pricing

Built for one. Scales to a team.

Start free with the full personal plan. Upgrade for shared graphs, priority support, and team admin. Enterprise is on the way — talk to us about a design partnership today.

Free

Full local-first cognitive OS. No credit card.

FreeOpen source. No credit card.
Download Free
  • Local-first, offline-first
  • Unlimited local memories
  • Single device
  • Local AI via Ollama
  • Knowledge graph visualization
  • Obsidian vault import
  • Community support

Business

Team workspaces, Pipes automation, shared graph.

$40/moBilled monthly
Contact Sales
  • Everything in Pro
  • Team workspaces
  • Pipes automation (YAML + LLM)
  • Shared graph intelligence
  • Priority support
Coming soon

Enterprise

SAML SSO, SCIM, on-premise, audit logs.

Contact SalesTailored to your team & scale.
Contact Sales
  • SAML 2.0 SSO
  • SCIM 2.0 provisioning
  • On-premise deployment
  • Dedicated support
  • SLA guarantees
FeatureFreeProBusinessEnterprise
Core
Notes & knowledge base
Knowledge graph (auto-built)
AI Chat (RAG)
Hybrid search (BM25 + semantic)
AI & Capture
Long-Term Memory daemon
FSRS-4.5 learning system
Voice transcription (50+ languages)
Specialized AI agents
Team & Automation
Team workspaces
Pipes automation (YAML + LLM)
Real-time collaboration
MCP Server
Enterprise
SAML 2.0 SSO
SCIM 2.0 provisioning
IP allowlisting
Audit logs (per-user + per-org)

Choose your way

One knowledge base.
Three ways to use it.

Run the full desktop app, plug into your AI tools via the CLI & MCP server, or stay close to the source from your phone and browser.

Serpaix Desktop

The full Cognitive OS — voice, screen, knowledge graph, AI agents. Local-first. macOS, Windows, Linux.

Download for Desktop

CLI / MCP Server

Pipe your knowledge base into Claude Desktop, Cursor, and any AI client via 17 MCP tools. Or run the CLI for instant standups.

$ npm i -g serpaixnpm i -g serpaix

Mobile & Web

Capture voice memos and search your graph from iOS, Android, and the browser. Offline-first, syncs when you reconnect.

Join Web Waitlist

FAQ

Frequently asked
questions.

Get answers to the questions we hear most about pricing, privacy, AI, and the knowledge graph.

Talk to our team

Your data is stored in your personal encrypted workspace. Sensitive fields are encrypted with AES-256-GCM. PII (credit cards, SSNs, API keys, emails) is automatically detected and redacted before any data leaves your device in LTM mode. Pro users can enable full local AI mode using Ollama — your data never reaches cloud AI providers. You can export and delete all your data at any time.

Security & trust

Open source means auditable.

Serpaix ships under the MIT license. Every primitive on this page maps to real code in the monorepo — no marketing-only features. Items marked On roadmap are queued and tracked in our public issues; items marked Enterprise ship with the upcoming team plan.

Security primitives

AES-256-GCM field encryption

Available

Sensitive fields (OAuth tokens, vault entries, secrets) are encrypted with authenticated AES-256-GCM.

ImplementationVerified in apps/backend/src/lib/crypto.ts and Prisma column-level encryption.

TLS 1.3 in transit

Available

All network traffic is encrypted with TLS 1.3. Production deployments set HSTS with includeSubDomains.

Argon2id password hashing

Available

Passwords are hashed with Argon2id (memory-hard, side-channel resistant).

ImplementationConfigurable cost parameters; never stored in plaintext or reversible form.

TOTP two-factor authentication

Available

Time-based one-time passwords (RFC 6238) for an additional authentication factor.

Role-based access control

Available

Owner, admin, editor, and viewer roles scoped to workspaces and resources.

Audit log

Available

Immutable append-only event store records every state change with actor, target, and timestamp.

ImplementationPer-user AuditLog and per-org OrgAuditLog tables — queryable in the admin dashboard.

GDPR data export

Available

Self-service export of all user data in JSON, Markdown, and CSV. Account deletion is permanent within 30 days.

Enterprise & compliance

SAML 2.0 SSO

Available

Single sign-on via SAMLify. Compatible with Okta, Azure AD, ADFS, and any SAML 2.0 IdP.

SCIM 2.0 provisioning

Available

Automated user lifecycle from your IdP — provisioning, de-provisioning, and group sync.

IP allowlisting

Available

CIDR-block network access control for the admin console and API.

Admin dashboard

Available

Org-wide usage analytics, member management, and governance controls.

HIPAA-grade data classification

On roadmap

PHI tagging, classification-aware logging, and enhanced audit trail for healthcare workloads.

SIEM export

On roadmap

Audit log streaming to Splunk, Datadog, Elastic, or your SIEM of choice.

SOC 2 Type II

On roadmap

Third-party audit covering security, availability, and confidentiality trust criteria.

Bring-your-own-key (BYOK)

Enterprise

Customer-managed encryption keys for the AES-256-GCM field layer.

CAPTURECONNECTREASONREMEMBERDISCOVERGRAPHLEARNSEARCHAILOCAL-FIRSTOPEN SOURCEMITKNOWLEDGEMEMORYAGENTSCAPTURECONNECTREASONREMEMBERDISCOVERGRAPHLEARNSEARCHAILOCAL-FIRSTOPEN SOURCEMITKNOWLEDGEMEMORYAGENTS

Cognitive Domains

8 domains of knowledge work.

The Cognitive Twin models how you work across every domain — and personalizes Serpaix to match your unique thinking style.

Research
Engineering
Writing
Learning
Healthcare
Legal
Strategy
Creative

Open Source

The code that processes your knowledge is the code you can read.

MIT licensed. Self-hostable on your own infrastructure. No black-box AI. No vendor lock-in. Full source available on GitHub.

MIT Licensed

Open source forever

GitHub Stars

Growing community

Self-hostable

Docker + Kubernetes

Auditable Code

Security reviewable

View on GitHub