Nexus — Developer Workflow Toolkit

Experimental — TypeSafe/Jev build


        $
         uv tool install nexus-dev-toolkit-jev

Installs as nexus-jev / nexus-jev-mcp — a separate command, side by side with nexus, never overwrites it. AI-judgment-powered arch-doc parsing, stack detection, and IaC (Terraform/OpenTofu/Helm/Ansible) support. → full details

Workflow

Day 0 — Scaffold your project once

nexus init . then /scaffold

→ full walkthrough

Day 1 — Ship every feature with EPAV

/evaluate → /plan → /apply → /validate

→ full walkthrough

Add your own skills and rules

nexus skill add code-review

→ full guide

Wire the MCP server to Claude Code

uvx --refresh --from nexus-dev-toolkit nexus-mcp

→ full setup

Commands

Project Setup

nexus init .Claude Code — sets up .claude/ + knowledge/ + .mcp.json

nexus init . --tool opencodeOpenCode — sets up .opencode/ + knowledge/ + opencode.json

nexus init . -g codegraphchoose codegraph over graphify (default), skip the interactive prompt

nexus updateupdate the CLI itself; asks whether to also sync in a real terminal

nexus update --syncskip the prompt, always sync the current project too

nexus syncsync built-in skills & agents to latest (keeps custom files)

nexus doctorvalidate project setup — tools, skills, MCP config, knowledge graph (graphify/codegraph)

nexus --versionshow installed version

Skills

nexus skill listshow all skills in .claude/commands/

nexus skill add <name>create a custom skill

Agents

nexus agent listshow all subagents in .claude/agents/

nexus agent add <name>create a custom subagent

Rules

nexus rule listshow all rules in knowledge/rules/

nexus rule add <name>create a project rule

Day 0 Skills (in Claude Code)

/scaffoldone-time project setup — EVALUATE → PLAN → APPLY → VALIDATE

Day 1 Skills (in Claude Code)

/evaluate <task>orient, load context, check blast radius

/planblueprint — no code yet, wait for approval

/applyimplement the approved plan

/validateverify acceptance criteria, fix blockers