LangWatch Scenario on the Platform

What you can do now

Create scenarios from the Scenario Library

• Go to Simulations → Scenarios in your project

• Click New Scenario to open the creation modal

• Choose an example template (Customer Support, RAG Q&A, Tool-calling Agent) or describe your own

• Click Generate with AI to auto-generate a complete scenario, or I'll write it myself

Define situations and criteria

• Situation — Describe the user persona, emotional state, and what they're trying to accomplish

• Criteria — Add rules for what the agent must do or must NOT do (e.g., "Must acknowledge frustration", "Must NOT offer refund without approval")

• Labels — Tag scenarios with labels like billing, refunds, edge-case for filtering

Run against prompts or agents

• Click Save and Run to choose your target

• Run against any HTTP Agent endpoint

• Run directly against Prompts from your library—no integration code needed

• Or Save without running to store the scenario for later

View results with full tracing

• Watch the simulated conversation unfold in the Simulation Run view

• See pass/fail status and which criteria were met

• Click View Trace on any message to inspect latency, tokens, and tool calls

• Compare runs over time in the History panel

Screenshots