MarketMirror: an MCP server for Gemini CLI that tests ads and prices on simulated buyers

[DarkWorldCoder]

MarketMirror is an open-source (AGPL-3.0) MCP server you can add to Gemini CLI to test ads, prices, emails and sales pitches on simulated buyers before a real campaign. It builds interviewed buyer personas, puts your ads in realistic social feeds, runs a survey and a pitch rehearsal, and writes a go / iterate / no-go report with an offline HTML dashboard. It runs locally with a Gemini API key, another provider, or a mix of models in one market.

mm.sh agent-config --client gemini prints the MCP config for Gemini CLI.

• Live demo of a 2,999-person simulated run (a third of the buyers written by Gemini), no install: https://darkworldcoder.github.io/market-mirror/demo/
• Repo: https://github.com/DarkWorldCoder/market-mirror

Results are simulated and labelled as such. Feedback welcome. Disclosure: I maintain it.