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---
name: prevention-rules
description: Generate and review prevention rules auto-promoted from repeated failure patterns.
---
# Prevention Rules
Manage prevention rules that are auto-generated from repeated failure patterns.
## When to use
- Reviewing current active prevention rules for the project
- Checking if a specific action is blocked by a prevention rule
- Understanding why an action was blocked
- Generating new prevention rules from observed patterns
## How it works
Use the `prevention_rules` MCP tool to:
1. **List rules** — View all active prevention rules with their match patterns and corrective actions.
2. **Check rules** — Test if a specific action matches any prevention rule before execution.
3. **Review rule history** — See which feedback events led to a rule's promotion.
## Example
```
Check prevention rules for "npm publish without running tests" to see if this action is blocked.
```
Prevention rules are auto-promoted when the same failure pattern appears multiple times in captured feedback. Each rule includes the original failure context and a corrective action.
