io.github.promptster-dev/promptster

Official

Promptster

Test and compare prompts across any AI provider. Bring your own keys.

Test and compare prompts across multiple AI providers with your own API keys.

Install

claude_desktop_config.json

{
  "mcpServers": {
    "promptster": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://www.promptster.dev/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.