PromptJuggler

The product is a platform for authoring prompts, building AI workflows and agents, evaluating quality, and running workloads at scale, addressing the problem of inconsistent and unpredictable AI behavior in production. It is for developers and business teams building AI applications who need structured tooling for prompt engineering and testing. It is delivered as a SaaS platform with a unified editor for prompts, workflows and evaluations, API-triggered runs and parallel execution, requiring no external framework and using bring-your-own API keys.

Key features

• Author prompts with templates and versioning
• Tool calls to knowledge bases and APIs
• MCP and prompt chaining support
• Build workflows and agents
• Scripts, conditions, loops, parallel execution
• Evaluations as workflows with datasets
• Score outputs with assertions
• Trigger runs via API
• Dedicated capacity with parallel execution