rein Skill
rein is a JavaScript AI agent skill for Cursor, Codex with npx. REIN is a lightweight and hands-off harness for stricter, more explicit agentic coding workflows. This is an evolution of https://github.com/jstxn/FEAR.md
How to use rein Skill
Install or run
npm install -g @jstxn/rein
rein initCompatible clients
What is rein Skill?
rein is a JavaScript AI agent skill for Cursor, Codex with npx. REIN is a lightweight and hands-off harness for stricter, more explicit agentic coding workflows. This is an evolution of https://github.com/jstxn/FEAR.md This profile combines repository metadata with install, compatibility, and usage signals so developers can quickly decide whether it fits their agent workflow before opening the source repository.
Automated repository signals based on public metadata such as recency, license, installation evidence, and adoption. These are not a security audit or endorsement.
Key capabilities
- Reusable instructions support
- Includes SKILL.md support
- Shell commands support
- Spreadsheet work support
- Document generation support
- Anthropic provider support
- package.json config support
Technical details
Install or run rein using npx. Check jstxn/rein for the latest setup command.
- Built for JavaScript
- Built for Node.js
- Built for Go
- Install or run with npx
- Works with Cursor
- Works with Codex
- Uses SSE transport
Requirements and access
Security and permissions
Review permissions before connecting any MCP server to an agent. Pay special attention to whether it can read local files, write data, call external services, or perform destructive actions.
When to use rein Skill
- Use it for reusing agent instructions, scripts, and references.
- Use it for agent skills workflows.
- Use it for coding workflows.
- Use it for research workflows.
- Use it for cursor users.
Built with
Explore related resources
Frequently asked questions
What is rein?
rein is a JavaScript AI agent skill for Cursor, Codex with npx. REIN is a lightweight and hands-off harness for stricter, more explicit agentic coding workflows. This is an evolution of https://github.com/jstxn/FEAR.md
Who is rein best for?
rein is best for reusing agent instructions, scripts, and references, agent skills workflows, coding workflows, research workflows, cursor users.
How do I install rein?
Install or run rein using npx. Check rein for the latest setup command.
Is rein actively maintained?
rein may need a closer maintenance check before production use.
Auto-fetched from GitHub.
