# yaml-language-server: $schema=https://promptfoo.dev/config-schema.json description: 'Smoke test - transform response expression (6.1.1)' providers: - echo prompts: - '{"content": "Hello from transform", "metadata": {"score": 100}}' tests: - vars: {} options: # Transform extracts just the prompt content (which is JSON) # The echo provider returns the prompt as-is transform: 'output.toUpperCase()' assert: - type: contains value: 'HELLO FROM TRANSFORM'