Dan Jeffries Open-Sources Nautilo, a Multi-Agent Chat and Collaboration System for All Platforms

On September 17, former Pinecone founding team member Dan Jeffries released the open-source project Nautilo—a 100% open-source "organization-grade agent harness" that rebuilds chat and collaboration from scratch for the agent era, covering server, desktop, Web, Android, and iPhone, with every user getting a dedicated lifelong AI assistant called "Genie."

Confirmed

• Native multi-user/multi-agent: A "magic conversation router" in group chats lets the right Genie respond naturally without @-mentions; Genies come with a deeply customizable persistent memory system.
• Privacy architecture: To solve the leak problem of "your personal AI knows everything but blurts it out in group chats," Nautilo isolates architecturally via namespaces—Genies in public rooms only know memories the user shared in that conversation, and it offers privacy-first model privacy scores.
• Agent orchestration: Positioned as a "harness of harnesses," Genie can invoke coding agents like Codex, Hermes, and Claude Code, coordinating their work from the desktop or a paired phone. Jeffries believes the future isn't one do-everything universal agent, but multi-agent collaboration.
• Human-machine co-creation: Built-in native apps including Writer, Sheets, Slides, Video, and Designer let users jump in and edit the same artifact at any time, rather than "send a prompt and pray."

Why it matters

Jeffries points out that existing chat platforms like WhatsApp and Signal were built before LLMs, treating bots as spam to be blocked; unofficial agents can even violate terms of service, and WhatsApp's business platform doesn't allow deploying agents in regular group chats. Nautilo aims to solve three pain points of the agent era—group chat collaboration, privacy isolation, and human-machine co-creation—at the protocol and architecture level, released fully open source.

2026-09-17 ~ 2026-09-17 · 8 related posts

• [source] Nautilo launches: a 100% open-source org harness with a personal 'Genie' agent for every user — Dan_Jeffries1 · 2026-09-17
• [source] Nautilo launches open source: multi-user, multi-agent chat rebuilt for the agent era — Dan_Jeffries1 · 2026-09-17
• Nautilo goes co-creative: native Writer, Sheets, Slides and Video apps where humans and agents edit together — Dan_Jeffries1 · 2026-09-17
• Nautilo bundles native Writer, Sheets, Slides, and Video apps for co-creation — Dan_Jeffries1 · 2026-09-17
• Nautilo orchestrates Codex, Claude Code as a harness for other agent harnesses — Dan_Jeffries1 · 2026-09-17
• Why Nautilo rebuilt chat: WhatsApp and Signal were never designed for agents — Dan_Jeffries1 · 2026-09-17
• Nautilo uses memory namespaces so AI agents can't leak what they can't access — Dan_Jeffries1 · 2026-09-17
• [source] Nautilo TLDR: conversation routing, continual memory, and 1-10 privacy scores for models — Dan_Jeffries1 · 2026-09-17