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

# Relayers

Aarc's **Relayers** form the foundation of our one-click deposit infrastructure. They manage **final execution** across multiple blockchains, ensuring deposits either deliver the exact intended assets or trigger an **automatic refund** if completion isn't possible.

## Core Functions

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### On-chain Execution

When users send funds to a **unique deposit address**, the Relayers receive instructions from Aarc's Coprocessor (off-chain logic) to perform these actions:

* **Token Swaps** via integrated DEX routes
* **Bridging** through cross-chain protocols
* **Smart Contract Interactions** on the destination chain

The Relayers ensure all transactions strictly follow the user's deposit intent, without partial fills or unexpected changes.

### Dynamic Gas Management

If a transaction fails (due to network congestion or gas price spikes), Relayers automatically **retry with updated gas fees** or other parameters to complete the existing call data. They do **not** fetch new quotes or change the outcome; that's handled by Aarc's Coprocessor when a deposit needs a different route.

* **Retries** happen at set intervals to maximize success during temporary network issues.
* **Refund Fallback**: If completion isn't possible within 30 minutes, users receive an immediate refund, eliminating stuck funds and manual recovery.

### Controlled Operations

Currently, Aarc maintains a **centralized relayer infrastructure** to ensure consistent execution and security. This provides:

* **High Reliability**: Aarc oversees relayer performance, upgrades, and monitoring.
* **Tight Security Controls**: Only trusted entities can operate relayers, minimizing risks from malicious actors.
* **Future Roadmap**: Plans to **decentralize** relayer operations while maintaining security through staking, slashing, and other incentive mechanisms.

### Finality Assurance

Every deposit through the Aarc Relayers reaches one of two outcomes:

* **Exact Outcome**: Funds arrive on the destination chain in the correct amount, completing the user's intended action (e.g., staking, margin deposit).
* **Auto Refund**: If the transaction can't complete exactly as intended within 30 minutes, the user receives a refund in the source or a stable token on the chain of failure, without any manual claim process.

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### Need Help?

If you need help, visit our [Support](introduction/support) page.