Paca emerges as a free, open-source project management platform that reimagines Scrum for the AI era. Unlike traditional tools that bolt chatbots onto existing workflows, Paca integrates AI agents directly into the development process as equal teammates. Built in Go and self-hosted, it offers a lightweight alternative to bloated enterprise solutions.

Paca's architecture centers on shared Scrumban boards where humans and AI agents collaborate on sprint planning, BDD specs, and system design documents. The platform uses a WASM-based plugin system for both frontend and backend extensions, with a capability-based permission model that keeps customizations secure. Everything from workflows to field definitions runs through configuration files rather than code.

Version v0.4.0 introduces in-app AI chat for project-level planning and visual diff/revert capabilities for tracking changes. An MCP server enables direct integration with Claude and other compatible AI agents, while the OpenHands SDK runs each agent in isolated sandbox containers. The entire stack deploys via single Docker Compose command.

Developer passion drove this project, with the creator's team already using it daily. By treating AI as legitimate Scrum participants rather than automation tools, Paca challenges the $8-20 per seat monthly pricing model of established platforms. The Apache 2.0 licensed tool represents a practical step toward AI-human development teams.