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Getting Started
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Getting Started
Prompt Builder is a component-based prompt IDE. Instead of writing prompts from scratch every time, you assemble them from reusable building blocks — personas, protocols, formats, and templates — from a shared public vault.
There are two ways to use it: Standard Studio for quick, no-login prompt runs, and Advanced Studio for the full component workflow with saved vaults, chaining, and MCP integration.
Who is this for?
- Developers building LLM-powered applications who need repeatable, structured prompts
- Teams that want a shared library of prompt components instead of scattered notes
- Anyone using Claude Desktop or Cursor who wants their vault accessible as MCP tools
- Prompt engineers who want to test, chain, and iterate without switching tools
Quick start
1
Go to /standard — no login needed. Pick a provider, paste your API key (stays in your browser), write a prompt, and run it.
2
Sign up via /auth/login to unlock Advanced Studio, the component vault, and packs.
3
In /advanced, browse the vault, select components, compile your prompt, and execute.
4
Optionally, generate an API key in Settings and connect the MCP server to Claude Desktop or Cursor.
Tip:Your API keys for LLM providers (OpenAI, Anthropic, Gemini) are never sent to our servers. They live only in your browser session.