Promptster for Claude Code

io.github.promptster-dev/promptster

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

client:Claude Code transport:streamable-http

Install Promptster in Claude Code

run in your project directory

claude mcp add --transport http promptster https://www.promptster.dev/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs