Quote Current, Specify New
When changing configuration or values, state what the current value is AND what the new value should be. 'Change the pool size' is vague. 'Change pool from 5 to 20' is unambiguous and verifiable.
Where you'll practice this
One Promptles scenario teaches this principle directly.
The Config Change
Your application's database configuration lives in `config/database.yml`. The current connection pool size is set to 5, but under load testing you've found you need to increase it to 20. You also need to add a connection timeout setting of 30 seconds, which doesn't exist in the…
Other principles in Context
Declare the Tools You Need
Name the tool or MCP server by name, and say what to do if it isn't reachable.
Describe Before You Prescribe
Describe the Data Shape
Claude can't clean data it can't picture.
Explain the Integration Point
Keep Memory Reusable
Save patterns and preferences that survive across sessions; never save snapshots of finished work.
Map to Real Components
Use Code Connect so it reuses your components, not new markup.