Skillget

maxsimcli

agent
SUMMARY

Solve context rot in AI coding. Spec-driven development system for Claude Code, OpenCode, Gemini CLI, and Codex — with parallel subagents, atomic commits, and a live dashboard.

README.md

MAXSIM

Meta-prompting and project orchestration system for Claude Code.

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The Problem

You start a Claude Code session. The first 20 minutes go well. Then it forgets your architecture decisions, repeats the same mistakes, and output quality drops. You open a fresh session and lose all context.

That is context rot. It gets worse the bigger your project grows.

What MAXSIM Does

MAXSIM breaks your work into phases, plans each one separately, and runs every task in a fresh agent with only the context it needs. Your decisions, requirements, and project state live on GitHub — Issues, Project Boards, and Milestones. GitHub is the single source of truth. Nothing gets lost between sessions.

It does not call any LLM API directly. MAXSIM orchestrates Claude Code agents through markdown prompts and workflow files. No API keys, no extra costs beyond your existing Claude Code usage. v6 is Claude Code only.

You install it with one command. It lands in your project's .claude/ directory and shows up as slash commands in Claude Code.

npx maxsimcli@latest

Quick Start

npx maxsimcli@latest

Then inside Claude Code:

/maxsim:go

Tip: /maxsim:go auto-detects project state and proposes the right action. Use it as your primary entry point.

Or use the explicit sequence:

/maxsim:init        # Set up the planning structure
/maxsim:plan 1      # Plan phase 1
/maxsim:execute 1   # Run phase 1

That is the core loop. Init, plan, execute, verify. Each phase is isolated, each task gets a fresh agent, every change gets an atomic commit.

What You Get

MAXSIM ships 14 slash commands, 4 agents, 15 skills, and 18 workflows. Here is what that means in practice.

Spec-driven development. All work flows through GitHub — phase Issues, sub-issue tasks, Project Board columns, and structured comments. The GitHub Project Board is the single source of truth. Agents read from it and update it as they work.

4 generic agents with clear roles. Executor builds things. Planner creates plans. Researcher investigates the codebase. Verifier checks the results. Each one does one job.

3 model profiles. Pick quality, balanced, or budget to control which Claude model tier each agent uses. You can override individual agents too.

GitHub Issues as the source of truth. Phases become tracking issues. Plans become sub-issues. A 5-column project board (Backlog, To Do, In Progress, In Review, Done) tracks execution progress.

Parallel execution with git worktrees. Independent plans run concurrently in separate worktrees. MAXSIM groups them into dependency-ordered waves and runs each wave in parallel.

Verification gates you can toggle. Five gates (tests, build, lint, spec compliance, code review) check every phase before it closes. Configurable strict mode and retry limits keep quality high.

Installation

You need Node.js 22+ and Claude Code. Git is required for parallel execution. GitHub CLI (gh) is required for all GitHub operations. MaxsimCLI uses GitHub as the single source of truth.

npx maxsimcli@latest

Run this from your project root. Everything goes into .claude/.

CLI Flags

Flag Alias What it does
--uninstall Remove all MAXSIM files from .claude/
--quiet -q Suppress output
--help -h Show usage
--version -v Print version

What Lands in Your Project

The installer copies these files into .claude/:

  • 14 slash commands (/maxsim:init, /maxsim:plan, etc.)
  • 4 agent definitions (executor, planner, researcher, verifier)
  • 15 skills (TDD, debugging, code review, and more)
  • 18 workflow files
  • 5 reference documents, 2 rules files
  • 8 hooks (statusline, update checker, sounds, capture-learnings, session-start, task-completed, teammate-idle)
  • 1 tool binary (maxsim-tools.cjs)
  • CLAUDE.md in your project root

Directory Layout

.claude/
├── commands/maxsim/          # 14 slash commands
├── maxsim/
│   ├── bin/maxsim-tools.cjs  # Tool binary
│   ├── workflows/            # 18 workflows
│   ├── templates/            # Planning document templates
│   ├── references/           # 5 reference docs
│   └── hooks/                # 8 hook scripts (.cjs)
├── agents/                   # 4 agents
├── skills/                   # 15 skill directories
├── rules/                    # 2 rules files
├── settings.json
└── CLAUDE.md                 # Not here — see note below
# CLAUDE.md is generated in the project root, not inside .claude/

Upgrading

Run npx maxsimcli@latest again. The installer overwrites MAXSIM-managed files. Custom skills you have added to .claude/skills/ and your own agents are not touched.

Uninstall

npx maxsimcli --uninstall

Removes MAXSIM files from .claude/. Your own skills, agents, and Claude Code config stay untouched.

Commands

Command What it does
/maxsim:init Initialize MaxsimCLI in current project with GitHub integration
/maxsim:plan <phase> Plan a specific phase with discussion, research, and task breakdown
/maxsim:execute <phase> Execute all plans in a phase with parallel agents and auto-verification
/maxsim:execute-phase <phase> Alias for /maxsim:execute
/maxsim:go Auto-detect project state and execute the right action
/maxsim:quick <description> Quick task — create a GitHub Issue and execute in simplified flow
/maxsim:progress Show project status from GitHub Project Board with next-action recommendation
/maxsim:debug Systematic debugging with reproduce-hypothesize-isolate-verify-fix cycle
/maxsim:debug-loop [symptom] Autonomous bug hunting with hypothesis testing
/maxsim:fix-loop [error-command] Autonomous error repair until zero errors remain
/maxsim:improve [metric-command] Autonomous optimization loop against any metric
/maxsim:security [scope] Security audit — STRIDE + OWASP + red-team (read-only)
/maxsim:settings View and modify MaxsimCLI configuration
/maxsim:help Show available MaxsimCLI commands and usage

Core Workflow

MAXSIM organizes development into phases. Each phase moves through five stages.

1. Initialize (/maxsim:init)

Run once per project. Creates a local .claude/maxsim/config.json for CLI settings and connects to GitHub — creating Issues labels, a Project Board, and optionally a Milestone for tracking.

2. Plan (/maxsim:plan <phase>)

Three steps happen in sequence. A researcher agent inspects the codebase. You discuss scope and acceptance criteria. A planner agent creates a phase tracking issue and sub-issues on GitHub with structured plan content.

3. Execute (/maxsim:execute <phase>)

An executor agent picks up each plan, makes the code changes, commits atomically, and runs verification before moving on. Independent plans can run in parallel across multiple agents.

4. Verify

A verifier agent checks that every plan has a summary, expected artifacts exist, requirements have evidence, and the project passes health checks. Gaps get surfaced before the phase closes.

5. Complete

The phase is marked done and progress updates. The next phase becomes active.

Want to plan and execute in one go? Use /maxsim:go. Got a quick fix that does not fit a phase? Use /maxsim:quick <description>.

Phase Lifecycle

Phases move through the GitHub Project Board columns:

Backlog → To Do → In Progress → In Review → Done
Column Meaning
Backlog Phase identified, not yet scheduled
To Do Phase planned and ready to start
In Progress Execution underway
In Review Verification gate active
Done All plans executed, verified, and closed

Phase numbers are flexible. Integer (01, 02), letter suffixes for parallel tracks (02A, 02B), and decimal inserts (02.1) all work.

Agents

4 agents, each with one job:

Agent Role What it does
Executor Builds things Reads plans, makes code changes, commits atomically, handles deviations
Planner Creates plans Turns research into structured plan comments on GitHub Issues with tasks, waves, and dependencies
Researcher Investigates Explores the codebase, gathers technical context, can use Brave Search
Verifier Checks results Validates plan structure, artifacts, requirement evidence, commit integrity

Each agent is a markdown file at .claude/agents/{name}.md with YAML frontmatter for tools, model tier, and preloaded skills.

Model Profiles

Set execution.model_profile in .claude/maxsim/config.json to control which Claude model each agent uses:

Profile Planner Executor Researcher Verifier
quality opus opus sonnet opus
balanced opus sonnet sonnet sonnet
budget sonnet sonnet haiku sonnet

opus maps to inherit, meaning it uses your Claude Code session model. sonnet and haiku are passed directly to subagent invocations.

Per-Agent Overrides

The model profile applies uniformly to all agents of each type. To change which models are used, set execution.model_profile in .claude/maxsim/config.json to quality, balanced, or budget.

GitHub Integration

MAXSIM tracks phase and plan progress through GitHub Issues. Execution progress lives in GitHub. A local .claude/maxsim/config.json holds CLI settings. GitHub CLI (gh) and a GitHub-hosted repository are required for this feature.

Setup

Configured during /maxsim:init:

  1. Creates a "MAXSIM Task Board" project with 5 columns (Backlog, To Do, In Progress, In Review, Done)
  2. Creates 6 labels in 2 namespaces (type:phase, type:task, type:bug, type:quick, maxsim:auto, maxsim:user)
  3. Optionally creates a GitHub Milestone

How It Works

Each phase gets a tracking issue. Each plan becomes a sub-issue linked to its phase. Plan content goes into structured comments. Completion data (commit SHA, files changed) gets posted to task issues. Progress is computed from open vs closed sub-issue counts.

The CLI binary maintains an internal cache that maps phase numbers to GitHub issue numbers. This is an implementation detail of the binary and is not a user-facing file; it is rebuilt automatically from GitHub when needed.

Tool Commands

The github subcommands are dispatched through the maxsim-tools.cjs binary. The CLI dispatcher for these commands is not yet fully implemented; the binary is currently a stub. The following subcommands are planned:

Subcommand Status What it does
github setup planned Create board, labels, milestone
github create-phase planned Create a phase tracking issue
github create-task / batch-create-tasks planned Create task sub-issues
github move-issue planned Move issue between board columns
github status planned Show progress and board overview
github sync-check planned Verify local cache matches GitHub
github all-progress planned Show progress for all phases

Configuration

Project config lives in .claude/maxsim/config.json, created during /maxsim:init.

Full Reference

Setting Type Default What it does
version string "6.0.0" Config schema version
execution.model_profile 'quality' | 'balanced' | 'budget' 'balanced' Model tier for all agents
execution.parallelism.max_agents_per_wave number 3 Cap on concurrent agents per wave
execution.parallelism.max_retries number 3 Max retries per failed plan
execution.parallelism.competition_strategy 'none' | 'quick' | 'standard' | 'deep' 'standard' Parallel competition strategy
execution.verification.strict_mode boolean true Enforce all verification gates
execution.verification.require_code_review boolean true Code review gate
execution.verification.auto_resolve_conflicts boolean true Auto-resolve merge conflicts
worktrees.basePath string '.maxsim-worktrees/' Worktree base directory
worktrees.auto_cleanup boolean true Remove worktrees after completion
worktrees.branch_prefix string 'maxsim/' Branch prefix for worktree branches
automation.auto_commit_on_success boolean true Auto-commit on successful plan execution
automation.conventional_commits boolean true Enforce conventional commit format
automation.co_author string 'Co-Authored-By: Claude <[email protected]>' Co-author trailer added to commits
github.projectName string '' GitHub Project Board name
github.auto_push boolean true Auto-push branches after execution
hooks.enabled boolean true Enable all MAXSIM hooks

Config Example

{
  "version": "6.0.0",
  "execution": {
    "model_profile": "balanced",
    "parallelism": {
      "max_agents_per_wave": 3,
      "max_retries": 3,
      "competition_strategy": "standard"
    },
    "verification": {
      "strict_mode": true,
      "require_code_review": true,
      "auto_resolve_conflicts": true
    }
  },
  "worktrees": {
    "basePath": ".maxsim-worktrees/",
    "auto_cleanup": true,
    "branch_prefix": "maxsim/"
  },
  "automation": {
    "auto_commit_on_success": true,
    "conventional_commits": true,
    "co_author": "Co-Authored-By: Claude <[email protected]>"
  },
  "github": {
    "projectName": "MAXSIM Task Board",
    "auto_push": true
  },
  "hooks": {
    "enabled": true
  }
}

Environment Variables

Variable Purpose
BRAVE_API_KEY Brave Search API key (or put it in ~/.maxsim/brave_api_key)
MAXSIM_DEBUG Verbose debug logging to stderr
MAXSIM_SOUND=0 Turn off notification sounds
CI=true Suppress sounds in CI
CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1 Enable Agent Teams for parallel execution

Skills

Skills are reusable prompt modules that agents load on demand. Each skill is a SKILL.md file with YAML frontmatter and a markdown body.

Built-in Skills (15)

Skill Category What it does
tdd Task Test-driven development, Red-Green-Refactor cycle with atomic commits
systematic-debugging Methodology Root-cause analysis: reproduce, hypothesize, isolate, verify, fix
verification Methodology Evidence-based verification with quality gates and anti-rationalization enforcement
maxsim-simplify Task Reviews changed code for reuse opportunities and unnecessary complexity
code-review Task Checks security, interfaces, error handling, test coverage
project-memory Task GitHub-native persistence for learnings, decisions, and patterns
using-maxsim Task Routes work through MaxsimCLI commands based on project state
brainstorming Task Explores multiple approaches with structured comparison before committing
roadmap-writing Task Creates phased roadmaps with dependency graphs and GitHub Milestone structure
maxsim-batch Task Decomposes tasks for parallel worktree execution
commit-conventions Convention Conventional commit format and version trigger rules
github-operations Reference Unified GitHub interaction: artifacts, comments, CLI, issue lifecycle
handoff-contract Protocol Agent-to-agent handoff protocol
research Methodology Systematic investigation using parallel agents and source hierarchy
autoresearch Task Autonomous optimization loop powering improve, fix-loop, debug-loop, and security commands

Skill Types

Protocol skills load automatically (handoff-contract). Methodology skills guide how agents think. Task skills are user-invocable workflows like TDD or code review. Reference skills provide static information.

Managing Skills

Built-in skills update when you upgrade MAXSIM. Custom skills you place in .claude/skills/ are preserved.

Parallel Execution

MAXSIM can run multiple plans at the same time using git worktrees. Each plan gets its own isolated working directory.

Plans within a phase are grouped into waves. Wave 1 runs first, wave 2 starts after wave 1 finishes. Plans in the same wave run in parallel if they do not touch the same files.

Each parallel plan gets a worktree at .maxsim-worktrees/{planId}/ on its own branch. Worktrees are cleaned up automatically after completion.

When It Activates

execution.parallelism.max_agents_per_wave caps concurrent agents per wave (default 3). CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS=1 is set automatically in settings.json during installation.

Before running in parallel, MAXSIM checks that plans do not modify the same files. If there is a conflict, it falls back to sequential mode.

Hooks

MAXSIM installs 8 Claude Code hooks:

Hook Event What it does
maxsim-statusline statusLine Shows model tier, phase number, board column, and milestone progress
maxsim-check-update SessionStart Checks npm for new MAXSIM versions in the background
maxsim-session-start SessionStart Initializes session context and loads project state
maxsim-notification-sound Notification Plays a sound when Claude asks you a question
maxsim-stop-sound Stop Plays a sound when Claude finishes
maxsim-capture-learnings Stop Appends a dated learning entry to .claude/agent-memory/ from the last 5 commits
maxsim-task-completed Stop Updates GitHub Issue status when a task execution completes
maxsim-teammate-idle Stop Detects idle teammate agents and reassigns or notifies

Statusline

[update] model | P{N} {BoardColumn} | milestone: pct% | dirname

Sounds are suppressed when MAXSIM_SOUND=0, CI=true, or SSH_CONNECTION is set. On Windows sounds play as .wav via PowerShell, on macOS as .aiff via afplay, on Linux it falls back to a terminal bell.

Architecture

Monorepo

npm workspaces monorepo with two packages:

maxsim/
├── packages/
│   ├── cli/          # maxsimcli, the published npm package
│   └── website/      # maxsimcli.dev, project website (private)
├── templates/        # Markdown assets copied into dist during build
└── package.json      # Workspace root

Only packages/cli gets published to npm as maxsimcli.

Build

npm run build        # tsdown (CJS) then copy-assets into dist/
npm test             # Vitest unit tests
npm run e2e          # Vitest e2e tests
npm run lint         # Biome

tsdown compiles TypeScript to CJS. copy-assets bundles templates, workflows, agents, skills, hooks, and references into dist/assets/. semantic-release handles versioning and npm publish on push to main.

Contributing

Conventional commits. See CONTRIBUTING.md.

  • fix: triggers a patch release
  • feat: triggers a minor release
  • feat!: or BREAKING CHANGE: triggers a major release

License

MIT

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