The problem

Growing a gaming channel means the same chores on four platforms: cutting clips, writing posts, scheduling them, tuning titles and tags, then guessing what worked. Each tool I tried solved one piece, and none of them measured anything.

I wanted one place to do the work, and evidence rather than guesswork about what actually moved the numbers.

What it does

Clip

Shorts Studio scans my recordings, scores the strongest moments and cuts them into vertical clips. It remembers what has already been used, so the same moment is never cut twice.

Optimise

A step-by-step pipeline rewrites titles, descriptions and tags for search, with a review stage before anything is written back to YouTube.

Reach new audiences

Localize translates titles and descriptions across the back catalogue within a daily quota budget, with the originals backed up and a one-click restore.

Measure

Every metadata change is logged with the numbers from just before it, then compared against videos that weren’t changed. That turns “did the SEO rewrite work?” into a question with an answer.

How it’s built

One Flask web app with four feature areas behind it. There is no database: everything lives in local JSON stores, synced between my machines as encrypted backups.

An MCP server lets an AI agent read what PromoForge knows about the channel and leave drafts for me to review. By design, it can never publish.

• Python
• Flask
• JavaScript
• YouTube Data and Analytics APIs
• Instagram Graph API
• Claude API
• FFmpeg
• Playwright
• pytest
• Docker

How I worked on it

• Evidence over assumptions

  Every change feeds a measurement back in, with an untreated control group so one lucky video never gets declared a winner.

• Safety rails

  Drafts before anything goes live, and a quota budget on every API so no job can run through a platform’s limits.

• Testing at every layer

  A large automated suite, plus scripts that boot the app and check every panel in a real browser.

• AI-assisted development

  Built with an AI coding agent working from a written rulebook and living design docs, with me setting direction and reviewing the work.