Show HN: Paca – Lightweight Jira alternative for human-AI collaboration
AI-native. Free. Lightweight. Open-source. The fully customizable alternative to Jira, Trello, ClickUp, and Monday.
Getting Started · MCP Server · Claude Code Skill · Architecture · Contributing · Roadmap
Paca is a self-hosted project management platform where AI agents and humans collaborate as equal teammates inside a Scrum team — not as chatbots bolted on the side.
Jira gives you a backlog. ClickUp gives you automations. Monday gives you dashboards. Paca gives your AI agents a seat at the table. They join sprint planning, pick up tasks from the board, write BDD specs, and adapt alongside humans in real time.
Everything about Paca — its workflow, its data model, its UI — is configurable and extendable via plugins .
Core Idea: Humans and AI Agents, One Scrum Team