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startup-harness - Claude Code Plugin | ClaudePluginHub

Plugin

startup-harness

Name: startup-harness
Author: cheggin

By Cheggin

Autonomous startup builder — idea to deployed company. 121 skills (37 OMC + 84 custom), 32 agents, deterministic skill-chain enforcement across 4 flows, hooks on all 11 Claude Code event types, bundled OMC runtime + MCP server + bridge CLI. Standalone: no dependency on the oh-my-claudecode plugin. Validated: built 3 startups (B2C, devtool, B2B SaaS) from single sentences.

npx claudepluginhub cheggin/request-for-startups --plugin startup-harness

Popularity

Stars

Above avg

Med: 0·Avg: 274

Installs

Med: 0·Avg: 1

What's Inside

Slash Commands3

Dashboard

/dashboard

Launch the Fleet Dashboard for live agent fleet monitoring.

onboarding-resume

/resume

**Status:** 🔴 Not started

onboarding-skill

/startup-init

**Status:** 🟡 In progress

Agents32

alignment

/alignment

Continuously monitors repo structure against reference repos. Detects drift in organization, missing patterns, stale files, and structural inconsistencies.

analyst

/analyst

Pre-planning consultant for requirements analysis (Opus)

architect

/architect

Strategic Architecture & Debugging Advisor (Opus, READ-ONLY)

backend

/backend

Backend developer — builds Convex schema, API routes, server logic

code-reviewer

/code-reviewer

Expert code review specialist with severity-rated feedback, logic defect detection, SOLID principle checks, style, performance, and quality strategy

Skills121

convex-schema-validator

/convex-schema-validator

Defining and validating database schemas with proper typing, index configuration, optional fields, unions, and migration strategies for schema changes

convex-security-audit

/convex-security-audit

Deep security review patterns for authorization logic, data access boundaries, action isolation, rate limiting, and protecting sensitive operations

convex-security-check

/convex-security-check

Quick security audit checklist covering authentication, function exposure, argument validation, row-level access control, and environment variable handling

delight

/delight

Add moments of joy, personality, and unexpected touches that make interfaces memorable and enjoyable to use. Elevates functional to delightful. Use when the user asks to add polish, personality, animations, micro-interactions, delight, or make an interface feel fun or memorable.

landing-page-optimizer

/landing-page-optimizer

Run hypothesis-driven A/B tests on the landing page, measure conversion improvements via PostHog feature flags, and report outcomes with statistical significance. Use when optimizing landing page conversion, testing CTA changes, running experiments on page elements, or analyzing funnel drop-offs.

Hooks1

23 hooks across 10 events

MCP Servers1

admin

Stats

Version1.0.0

LanguageJavaScript

Stars1

MaintenanceExcellent

LicenseMIT

Last CommitApr 24, 2026

AddedApr 14, 2026

Actions

View on GitHub View README Plugin Marketplace JSON Homepage

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Available In

harness

Safety Signals

Critical

Matches all tools

Hooks run on every tool call, not just specific ones

Admin access level

Server config contains admin-level keywords

Caution

Help us improve

Share bugs, ideas, or general feedback.

README

Startup Harness

An autonomous multi-agent system that takes a startup idea and builds the entire company — research, design, code, deploy, and grow.

What This Does

You give it one sentence — a startup idea. It does everything else:

Interviews you about your vision, audience, and constraints
Researches competitors, market, and positioning
Generates a product spec with features, data models, and API routes
Designs UI in Figma using the Figma MCP
Scaffolds the repo with the canonical stack (Next.js, Turbopack, Tailwind v4, TanStack Query, Zustand, Convex)
Builds every feature with TDD (tests first, implement second, never simultaneously)
Reviews code automatically via Cubic
Deploys to Vercel (frontend) + Railway (backend) + Convex (database)
Grows with analytics (PostHog), SEO, content marketing, A/B testing
Monitors 24/7 with Sentry MCP for errors, uptime checks, and incident response
Iterates based on user feedback, continuously shipping improvements

Works for any startup type: B2C, B2B SaaS, devtool, marketplace, hardware+software, fintech, healthcare, e-commerce.

Quick Start

The harness is runtime-agnostic -- it works with both Claude Code and OpenAI Codex CLI.

Claude Code

/plugin marketplace add Cheggin/request-for-startups
/plugin install startup-harness@harness

All 121 skills become available as /startup-harness:<skill-name> and 32 agents as @startup-harness:<agent-name>.

/startup-harness:startup-init

Codex CLI

Install Codex CLI if you haven't already:

npm install -g @openai/codex

Then clone this repo and run the setup script:

git clone https://github.com/Cheggin/request-for-startups
cd request-for-startups
node .harness/hooks/setup.mjs --runtime codex

This generates:

File	Purpose
`.codex/config.toml`	Feature flags, skill paths, MCP server config
`.codex/hooks.json`	All 10 enforcement hooks wired to Codex lifecycle events
`.agents/skills/`	Symlink to `skills/` for Codex skill discovery
`AGENTS.md`	Agent coordination contract (Codex equivalent of CLAUDE.md)

After setup, launch Codex in the repo:

codex

Skills are available as $<skill-name> (e.g., $startup-init, $plan, $team). All hooks (scope enforcement, config protection, deploy gates, commit validation) work identically to Claude Code.

Existing Repo (Claude Code or Codex)

To add harness governance to any existing project:

# Copy .harness/ and skills/ into your repo, then:
node .harness/hooks/setup.mjs              # auto-detects installed runtime
node .harness/hooks/setup.mjs --runtime codex   # Codex only
node .harness/hooks/setup.mjs --runtime claude  # Claude Code only
node .harness/hooks/setup.mjs --runtime both    # both runtimes

The setup script auto-detects which CLI tools are on your PATH and generates the right config. No npm package or external dependencies required -- the hooks are vanilla Node.js.

Update / Uninstall (Claude Code)

/plugin marketplace update harness
/plugin uninstall startup-harness@harness
/plugin marketplace remove harness

Advanced install (full runtime)

Marketplace install is enough for skills, agents, hooks, and deterministic skill-chain enforcement. If you also want the bundled MCP server (state_*, notepad_*, wiki_*, lsp_*, ast_grep_*, python_repl) and the omc CLI binary, clone the repo and link it:

git clone https://github.com/Cheggin/request-for-startups
cd request-for-startups
npm install          # pulls ajv, ajv-formats, better-sqlite3
npm link             # registers the `omc` binary on PATH
npm run test:hooks   # 55 node:test assertions across all hooks

After npm install, bridge/mcp-server.cjs becomes registered as the t MCP server (see .mcp.json) and provides the full OMC tool surface to any session with this plugin installed. After npm link, skills that invoke omc team start, omc teleport, omc ask codex, etc. resolve to this plugin's bridge/cli.cjs rather than a separately-installed OMC plugin.

Architecture

View full README on GitHub

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7mo

v1.0.0

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startup-harness

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What's Inside

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README

Startup Harness

What This Does

Quick Start

Claude Code

Codex CLI

Existing Repo (Claude Code or Codex)

Update / Uninstall (Claude Code)

Advanced install (full runtime)

Architecture

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Help us improve

Startup Harness

What This Does

Quick Start

Claude Code

Codex CLI

Existing Repo (Claude Code or Codex)

Update / Uninstall (Claude Code)

Advanced install (full runtime)

Architecture