Playground
Test, iterate, and compare prompt variants interactively.
Build with the Respan MCP
We recommend installing the Respan MCP so your AI coding tool can work with your prompts, logs, and traces directly. Authenticate with your Respan API key from the API keys page:
See the MCP docs for OAuth setup and other clients.
Test and iterate on prompts in the Prompt Playground.
From the prompt editor
Enter variable values and click Playground in the top bar to test. Click Commit to save changes back to your prompt library.
From production logs
Debug production logs by clicking Open in Playground on any log entry.
Compare variants
Set the number of variants in the side panel to generate multiple responses and compare them in the Variants tab.
