Moltis — A secure persistent personal agent server in Rust
One binary — sandboxed, secure, yours.
Installation • Comparison • Architecture • Security • Features • How It Works • Contributing
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Secure by design — Your keys never leave your machine. Every command runs in a sandboxed container, never on your host.
Your hardware — Runs on a Mac Mini, a Raspberry Pi, or any server you own. One Rust binary, no Node.js, no npm, no runtime.
Full-featured — Voice, memory, cross-session recall, automatic edit checkpoints, scheduling, Telegram, Signal, Discord, browser automation, MCP servers, SSH or node-backed remote exec, managed deploy keys with host pinning in the web UI, a live Settings → Tools inventory, Cursor-compatible project context, and context-file threat scanning — all built-in. No plugin marketplace to get supply-chain attacked through.
Auditable — The agent runner and model interface fit in ~7.5K lines, with providers in ~19K more. The Rust workspace is ~270K lines across 59 modular crates you can audit independently, with 470+ Rust files containing tests. Unsafe code is isolated to FFI and precompiled runtime boundaries, not the core agent loop.
Installation
# One-liner install script (macOS / Linux)
curl -fsSL https://www.moltis.org/install.sh | sh
# macOS / Linux via Homebrew
brew install moltis-org/tap/moltis
# Docker (multi-arch: amd64/arm64)
docker pull ghcr.io/moltis-org/moltis:latest
# Or build from source
cargo install moltis --git https://github.com/moltis-org/moltis
Comparison
| | OpenClaw | Hermes Agent | Moltis | |---|---|---|---| | Primary stack | TypeScript + Swift/Kotlin companion apps | Python + TypeScript TUI/web surfaces | Rust | | Runtime | Node.js + npm/pnpm/bun | Python + uv/pip, optional Node UI pieces | Single Rust binary | | Local checkout size* | ~1.1M app LoC | ~152K app LoC | ~270K Rust LoC | | Architecture | Broad gateway, channel, node, and app ecosystem | CLI/gateway agent with learning loop and research tooling | Persistent personal agent server with modular crates | | Crates/modules | npm packages, extensions, apps | Python packages, plugins, tools, TUI | 59 Rust workspace crates | | Sandbox/backends | App-level permissions, browser/node tools | Local, Docker, SSH, Daytona, Singularity, Modal | Docker/Podman + Apple Container + WASM | | Auth/access | Pairing and local gateway controls | CLI and messaging gateway setup | Password + Passkey + API keys + Vault | | Voice I/O | Voice wake and talk modes | Voice memo transcription | Built-in STT + TTS providers | | MCP | Plugin/integration support | MCP integration | stdio + HTTP/SSE | | Skills | Bundled, managed, and workspace skills | Self-improving skills and Skills Hub support | Bundled/workspace skills + autonomous improvement + OpenClaw import | | Memory/RAG | Plugin-backed memory and context engine | Agent-curated memory, session search, user modeling | SQLite + FTS + vector memory |
* LoC measured with tokei, excluding node_modules, generated build output, dist, and target.
Architecture — Crate Map
Current Rust workspace: ~270K LoC across 59 crates. The table below groups the main crates by role so the architecture stays scannable.
Core runtime:
| Crate | LoC | Role |
|-------|-----|------|
| moltis-gateway | 37.4K | HTTP/WS server, RPC, auth, startup wiring |
| moltis-tools | 37.0K | Tool execution, sandboxing, WASM tools |
| moltis-providers | 18.9K | LLM provider implementations |
| moltis-agents | 14.5K | Agent loop, streaming, prompt assembly |
| moltis-chat | 14.2K | Chat engine, agent orchestration |
| moltis-config | 10.3K | Configuration, validation |
| moltis-httpd | 9.9K | HTTP server primitives and middleware |
| moltis (CLI) | 4.7K | Entry point, CLI commands |
| moltis-sessions | 3.5K | Session persistence |
| moltis-common | 1.5K | Shared utilities |
| moltis-service-traits | 1.2K | Shared service interfaces |
| moltis-protocol | 0.7K | Wire protocol types |
Feature and integration crates:
| Category | Crates | Combined LoC |
|----------|--------|-------------|
| Channels | moltis-telegram, moltis-whatsapp, moltis-signal, moltis-discord, moltis-msteams, moltis-matrix, moltis-slack, moltis-nostr, moltis-channels | 34.0K |
| Web and APIs | moltis-web, moltis-graphql, moltis-webhooks | 10.8K |
| Extensibility | moltis-mcp, moltis-mcp-agent-bridge, moltis-skills, moltis-plugins | 11.5K |
| Memory and context | moltis-memory, moltis-qmd, moltis-code-index, moltis-projects | 11.7K |
| Voice and browser | moltis-voice, moltis-browser | 9.2K |
| Auth and security | moltis-auth, moltis-oauth, moltis-vault, moltis-secret-store, moltis-network-filter, moltis-tls | 8.5K |
| Scheduling and automation | moltis-cron, moltis-caldav, moltis-auto-reply | 4.7K |
| Setup and import | moltis-provider-setup, moltis-openclaw-import, moltis-onboarding | 11.7K |
| Native and node hosts | moltis-swift-bridge, moltis-node-host, moltis-courier | 5.7K |
| WASM tools | moltis-wasm-precompile, moltis-wasm-calc, moltis-wasm-web-fetch, moltis-wasm-web-search | 1.4K |
| Supporting crates | moltis-media, moltis-metrics, moltis-tailscale, moltis-routing, moltis-canvas, moltis-schema-export, benchmarks | 2.1K |
Use --no-default-features --features lightweight for constrained devices (Raspberry Pi, etc.).
Security
- Small unsafe surface — core agent/gateway code stays safe Rust; unsafe is isolated to Swift FFI, local model wrappers, and precompiled WASM boundaries
- Sandboxed execution — Docker + Apple Container, per-session isolation
- Secret handling —
secrecy::Secret, zeroed on drop, redacted from tool output - Authentication — password + passkey (WebAuthn), rate-limited, per-IP throttle
- SSRF protection — DNS-resolved, blocks loopback/private/link-local
- Origin validation — rejects cross-origin WebSocket upgrades
- Hook gating —
BeforeToolCallhooks can inspect/block any tool invocation - Supply chain integrity — artifact attestations, Sigstore keyless signing, GPG signing (YubiKey), SHA-256/SHA-512 checksums
See Security Architecture for details.
Verify releases with gh attestation verify <artifact> -R moltis-org/moltis or see Release Verification.
Features
- AI Gateway — Multi-provider LLM support (OpenAI Codex, GitHub Copilot, Local), streaming responses, agent loop with sub-agent delegation, session modes, parallel tool execution
- Communication — Web UI, Telegram, Signal, Microsoft Teams, Discord, API access, voice I/O (8 TTS + 7 STT providers), mobile PWA with push notifications
- Memory & Recall — Per-agent memory workspaces, embeddings-powered long-term memory, hybrid vector + full-text search, session persistence with auto-compaction, cross-session recall, Cursor-compatible project context, context-file safety scanning
- Safer Agent Editing — Automatic checkpoints before built-in skill and memory mutations, restore tooling, session branching
- Extensibility — MCP servers (stdio + HTTP/SSE), skill system, 15 lifecycle hook events with circuit breaker, destructive command guard
- Security — Encryption-at-rest vault (XChaCha20-Poly1305 + Argon2id), password + passkey + API key auth, sandbox isolation, SSRF/CSWSH protection
- Operations — Cron scheduling, OpenTelemetry tracing, Prometheus metrics, cloud deploy (Fly.io, DigitalOcean), Tailscale integration, managed SSH deploy keys, host-pinned remote targets, live tool inventory in Settings, and CLI/web remote-exec doctor flows
How It Works
Moltis is a local-first persistent agent server — a single Rust binary that sits between you and multiple LLM providers, keeps durable session state, and can meet you across channels without handing your data to a cloud relay.
┌─────────────┐ ┌─────────────┐ ┌─────────────┐
│ Web UI │ │ Telegram │ │ Discord │
└──────┬──────┘ └──────┬──────┘ └──────┬──────┘
│ │ │
└────────┬───────┴────────┬───────┘
│ WebSocket │
▼ ▼
┌─────────────────────────────────┐
│ Gateway Server │
│ (Axum · HTTP · WS · Auth) │
├─────────────────────────────────┤
│ Chat Service │
│ ┌────