polos-dev/polos

# Technical Summary Polos implements durable agent execution through event sourcing—every tool call and API response is logged, allowing workflows to resume from failure without re-executing completed steps or re-paying for LLM calls. The architecture separates a Rust-based orchestrator (managing state, retries, scheduling, and Postgres persistence) from horizontally-scalable Python/TypeScript workers that run agents via SDK, connecting over a persistent transport. It integrates framework-agnostic: agents built with CrewAI, LangGraph, or Mastra can adopt Polos's durability and observability without rewriting, while new agents use native Python or TypeScript—no DAGs or graph syntax required.