HALETHEIA · Open Source

The Lego Analogy

Individual, composable primitives you can use independently — or snap together to build production-grade AI systems. Each piece works standalone. Together, they form the HALETHEIA stack.

github.com/haletheia → ← All OSS projects

The Pieces

Use one, use some, or use all. No forced coupling.

📋

HCP Protocol

The git-native standard for AI context management. The foundation everything else builds on.

Protocol · AGPL-3.0 · Available now

🔌

LiiADA Framework

Modular agent orchestration in Python. 13 swappable modules, hexagonal architecture, HCP-native.

Framework · Python · Launching May 2026

⚡

aronly

CLI that filters and compresses command output before it reaches your LLM. −60-90% tokens.

CLI · Rust · Available now

🦍

babuino

Secure sandbox for AI agent skill execution. KVM-based isolation — not containers, real hardware boundaries.

Security · Rust · Available now

🔍

cutufato

Verifiable audit trail for AI agent operations. Every decision logged, tamper-evident, queryable.

Audit · Python · Available now

🔒

xokito

Privacy shield for MCP tools. Keeps your secrets hidden while agents work with configuration files.

Privacy · Python · Available now

Lego ≠ Lock-in

Each piece is useful on its own. You don't need the full stack. Use HCP with Cursor. Use aronly in any terminal. Use babuino in your existing pipeline.

When you need more

The Castle

Enterprise infrastructure on top of the Legos: governance UI, reactive gateway, hallucination-free RAG, and EU AI Act compliance tooling. For teams that need SLAs.

See Enterprise →