Blast Radius Visualization
Blast radius visualization is an AI interface design pattern that displays a compact, scannable preview of exactly how much an agent action will affect (how many files, records, users, or resources are about to change) before the user approves execution. This UX pattern translates abstract operations into concrete numbers and visual scope maps, showing statements like "will rename 412 files across 37 folders" or "will message 1,243 customers" so users grasp impact before committing. The pattern is essential for bulk operations, schema changes, permission updates, and any fan-out-shaped action where the difference between "a handful" and "thousands" determines whether approval is reasonable. It prevents the common failure mode where a progress bar only reveals scope after execution has begun and damage is already in progress.
Use Case
Essential for agentic tools, bulk automation platforms, and admin interfaces where fan-out actions need clear scope disclosure before execution to prevent accidental large-scale changes.
Examples in Wild
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Pattern Description:Review scope before running
Confirm the reach matches what you asked for. Numbers update when you change filters below.
Will rename 412 files across 37 folders.
Totals refresh when you adjust scope.
Adjust scope
Include /legacy subtree
Adds nested vendor and archive paths to the rename match.
Related Patterns
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