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An independent, curated directory of AI-coding tools for solo builders - skills, MCP servers, marketplaces and workflows for Claude Code, Codex and Cursor, organized by the indie build journey from idea to operate.

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Last updated June 10, 2026 · © 2026 Skillselion. Skillselion is an independent project and is not affiliated with Anthropic, OpenAI, Cursor, Claude, Claude Code, or Codex.

Skills/MVANHORN/LAST30DAYS SKILL

mvanhorn/last30days-skill

1 skill · 7.6k installs · 32.8k stars · GitHub

Install

npx skills add https://github.com/mvanhorn/last30days-skill

Skills in this repo

1Last30daysLast 30 Days is an agent skill that researches any topic across Reddit, X, YouTube, and the web within a rolling 30-day window and returns a structured, citation-aware synthesis for solo builders who need fresh market and audience signal fast. It is built for the Idea and early Validate moments when you are choosing a niche, positioning, or content angle and do not want stale SEO summaries or single-source takes. The primary output lands in chat: a branded header, narrative “What I learned” sections with cited lead-ins, a KEY PATTERNS list, engine footer context, and an invitation to go deeper. When you ask for a shareable artifact—via flags like emit HTML or natural language such as “HTML brief for Slack”—the skill can also persist the same prose verbatim to an HTML file after the chat response, without replacing chat as the source of truth. Use it before writing specs, landing copy, or growth experiments so downstream agent steps start from what communities actually discussed this month.7.6kinstalls