---
id: intro
title: Welcome to the ADLC
kicker: Section 1 of 7
intro:
  heading: Welcome to the ADLC
  cta: Start tour
  showFlywheel: true
  scenario:
    label: Your scenario
steps: []
---

## intro

The Arthur's **Agent Development Lifecycle** is how teams ship agents they can trust. Over the next few minutes you'll iterate through every stage — interact, measure, observe, refine, and deploy - using one real failure mode as your worked example.

## scenario

The agent on this task answers general-knowledge questions from Wikipedia, but it never tells users where the information came from - so the **Source Attribution Eval**, which checks that answers cite their source, fails on every response. We'll use the ADLC to find the failure, fix the prompt so the agent cites Wikipedia, and prove the fix held.
