agentsys
AI writes code. This automates everything else · 24 plugins · 49 agents · 44 skills · for Claude Code, OpenCode, Codex, Cursor, Kiro.
AgentSys is a comprehensive plugin ecosystem for AI coding assistants that automates the entire software development lifecycle beyond code generation. It provides 24 specialized commands (like /next-task, /ship, /deslop) that orchestrate 49 specialized agents and 44 reusable skills across task discovery, implementation, code review, quality gates, documentation sync, and PR deployment. Built for Claude Code, OpenCode, Codex CLI, Cursor, and Kiro, it uses structured pipelines with phase gates, persistent state across sessions, and certainty-graded validation to eliminate manual orchestration of development workflows.
Key Features
Use Cases
- 01Automate end-to-end feature development from GitHub issue to merged PR with /next-task
- 02Run pre-ship quality gates (deslop, multi-agent review, test coverage, docs sync) before creating PRs
- 03Detect and remove AI-generated slop (debug statements, TODOs, verbose comments) with certainty-graded patterns
- 04Orchestrate multi-agent code reviews with specialized roles (security, performance, architecture) that iterate until clean
- 05Sync documentation with code changes and detect drift between plans, docs, and implementation
- 06Onboard to new codebases in under 3 minutes with /onboard's structured analysis and interactive Q&A
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agentsys — FAQ
What is AgentSys?+
AgentSys is a modular orchestration system that provides 24 plugins, 49 agents, and 44 skills for AI coding assistants to automate software development workflows beyond code generation—including task management, review, quality gates, and deployment.
How do I install AgentSys in Claude Code?+
Use '/plugin marketplace add agent-sh/agentsys' to add the marketplace, then '/plugin install next-task@agentsys' or '/plugin install ship@agentsys' to install specific commands. Alternatively, install globally via 'npm install -g agentsys && agentsys' for interactive setup.
Which AI clients does AgentSys work with?+
AgentSys is built for Claude Code, OpenCode, Codex CLI, Cursor, and Kiro. Installation is tailored per platform, with project-scoped skills for Cursor and steering files for Kiro.
What are the prerequisites for using AgentSys?+
Requires Git and Node.js 18+. GitHub workflows need GitHub CLI (gh) authenticated; GitLab workflows need glab. The /repo-intel command requires agent-analyzer (auto-installed), and /agnix requires the agnix CLI (npm, cargo, or brew).
Is AgentSys free to use?+
Yes, AgentSys is open-source under the MIT License and available for free via npm and the agent-sh GitHub organization.
How does AgentSys reduce token costs?+
AgentSys uses hybrid detection (regex, AST analysis, static tools) for deterministic tasks before calling LLMs for judgment, achieving 77% fewer tokens on tasks like /drift-detect. Benchmarks show Sonnet + AgentSys matches raw Opus quality at 40–83% lower cost.
How do I install agentsys?+
Open the source repository on GitHub and follow its README. agentsys is a plugin — MCP Agents Market links you directly to the official repo.
Is agentsys free?+
agentsys is an open-source project hosted on GitHub. Check the repository for its license and any usage requirements.