Sandbox
10 repos for startups · CodexClear
acogood/
diffmode_free

Free guerrilla growth tactics for startups, the kind your competitors won't come up with on their own. Runs in Claude Code or Codex: competitor read, buyer map, and 7 to 9 low-budget plays. ~90 min, local, Apache-2.0.

161

Audit and shrink your Claude Code startup context. Measures what every skill, plugin, agent, and memory file costs in the system prompt, then reversibly disables the dead weight. No proxy, no compression.

45
aplavin/
julia-mcp

MCP server for persistent Julia sessions — fast iteration without startup/compilation overhead

86
nostrband/
ServiceGraph

AI Agent skills to access structured datasets for startup founders

62
MaxKmet/
idea-validation-agents

AI agents that act as your personal venture analyst - from startup idea brainstorming to full validation and go-to-market strategy. Built for developers who'd rather validate in 10 minutes than regret in six months. Powered by Claude Code, OpenAI Codex, and Cursor.

454

Macro is a unified workspace for teams: email, chat, docs, tasks, agents, calls, and CRM — @-linked together with shared AI memory.

4.3k
AIDevGTM/
gtm-cofounder

#1 Product of The Day @ Product Hunt. The GTM co-founder you don't have. Open-source GTM Agent Skills for developer tools and AI products, for founders, GTM hires, and founding AEs: positioning, first users, launch, pricing. Sharpened by Frankl & Czakon. MIT.

273

11 go-to-market skills for AI and technical founders — positioning, pricing, partnerships, enterprise sales, PLG, AI GTM, and board communication.

42
cofoundy/
brand-skills

Open-source brand skills that turn an idea into a real brand — name, identity, voice & brand book — without leaving your AI agent. Works in Claude Code, Cursor & 70+ agents.

32
cgallic/
kai-cmo-harness

Open-source AI CMO for Claude Code: marketing agent skills for SEO, content, email, ads, launches, CRO, AEO/GEO, and AI-search visibility.

47