Inside prompts.chat: The Plain-Text Standard Steering Global Artificial Intelligence Prompts.chat, a community project launched shortly after ChatGPT's release, has grown into an open, version-controlled standard for system-prompt engineering by pairing plain-text data schemas with Model Context Protocol integrations and automated sync pipelines. The project converts community-curated persona vectors into executable AI context, moving prompt engineering away from fragmented social media posts. Born in the initial wake of ChatGPT's release, f/prompts.chat transformed raw system-prompt engineering from fragmented social noise into an open, version-controlled standard. By pairing lightweight plain-text data schemas with Model Context Protocol integrations and automated sync pipelines, it turned community-curated persona vectors into executable AI context.