AI Prompt Architect

What it does

AI Prompt Architect is a web platform for building structured prompts for large language models. It uses a visual STCO framework to set context, constraints and output format, then scores each prompt. It also offers a prompt library and an MCP server for IDEs, with a free tier that includes one analysis credit.

AI Prompt Architect is a prompt engineering workspace. You describe what you are building, set constraints and output format, and the tool returns a scored, structured prompt you can paste into an AI tool or IDE. The STCO framework gives prompts a repeatable shape, and the prompt library keeps versions and tags. An MCP server lets you use the tool inside Cursor, Claude or Windsurf. The free tier includes one analysis credit, so you can test the workflow before paying. Paid plans add more analyses, generations and refines, and credits are counted separately for each type. Team sharing is listed as coming soon. The site also states that prompts are encrypted with AES-256-GCM and that data is not used for model training. Before paying, check what each credit covers.