> ## Documentation Index
> Fetch the complete documentation index at: https://docs.coverfi.space/llms.txt
> Use this file to discover all available pages before exploring further.

# Protection Engine

> Core logic controller for protection positions

The `protection_engine` is the central coordinator of the CoverFi ecosystem. It interfaces with users and manages the lifecycle of stablecoin loss protection positions.

## Core Responsibilities

* **Position Lifecycle**: Opens, claims, revokes, and expires positions.
* **Math & Calculations**: Computes protection fees and max payout capacities based on configured parameters.
* **Cross-Contract Coordination**: Triggers transfers across the `protected_balance_vault`, `premium_vault`, and `reserve_vault`.
* **Oracle Verification**: Reads from the `oracle_adapter` during a claim to determine if the trigger threshold has been breached.

## Key Functions

### `create_position()`

Opens a new protection position, calculates fees, and moves funds from the user to the respective vaults.

### `claim_position()`

Checks the current oracle price against the position's trigger price. If the condition is met, it triggers a payout from the reserve vault to the user.

### `expire_position()`

Returns the protected principal back to the user if the duration ends without a price trigger.

### `revoke_position()`

Allows early cancellation of a position under specific protocol-defined conditions.