⚠️ Implement Slippage Alert System

[mijinummi]

🧭 Overview

BridgeWise allows users to execute cross-chain transfers, but high slippage can result in unexpected losses.

This issue introduces a Slippage Alert System that:

• Monitors slippage in real-time
• Notifies users or developers when slippage exceeds safe thresholds
• Integrates with benchmarking (feat: implement centralized configuration module #30), fee estimation (Transaction State Tracking Service (“Heartbeat”) #16), and transaction tracking (feat: Setup Storybook documentation in apps/docs #27)
• Supports headless mode (Logging & Audit Trail for Critical Actions #24) and UI components (<BridgeCompare />, <BridgeStatus />)

---

🎯 Problem

• Users may unknowingly execute transfers with excessive slippage
• Developers embedding BridgeWise have no automated alerts
• High slippage can reduce user trust and increase failed transfer complaints
• Without alerts, SDK cannot ensure safe and predictable transfers

---

💡 Proposed Solution

Implement a Slippage Alert System that:

• Monitors slippage for each transfer in real-time
• Supports configurable thresholds per token, bridge, or network
• Exposes hooks and events:
  • useSlippageAlert()
• Integrates with UI to show warnings or disable risky routes
• Supports headless mode for custom UI notifications

---

🛠 Scope of Work

1️⃣ Slippage Alert Hook

const { slippage, threshold, exceeded, errors } = useSlippageAlert({
  token: "USDC",
  sourceChain: "Ethereum",
  destinationChain: "Stellar",
  maxSlippagePercent: 1.0,
});

• slippage: current slippage estimate
• threshold: configured maximum slippage
• exceeded: boolean flag if slippage exceeds threshold
• errors: structured error info

---

2️⃣ Integration With Components

• <BridgeCompare /> highlights routes exceeding slippage thresholds
• <BridgeStatus /> shows real-time alerts during transaction execution
• Optional toast or banner notifications for end-users

---

3️⃣ Configurable Thresholds

• Developers can configure slippage limits per token or route:

{
  USDC: 0.5,
  ETH: 1.0,
  STX: 0.8
}

• Enables fine-grained control for dApp UX

---

4️⃣ Error Handling & Fallbacks

• Handle missing or delayed quote/slippage data
• Fallback to safe defaults if no live data available
• Ensure hook does not break UI or headless workflows

---

📊 Expected Outcome

• Users receive alerts when slippage is too high
• Developers can enforce safe transfer limits
• Reduced failed or costly transfers
• Supports headless integration for custom UIs

---

✅ Acceptance Criteria

• useSlippageAlert() hook implemented and SSR-safe
• Configurable thresholds per token, bridge, or route
• Integration with <BridgeCompare /> and <BridgeStatus />
• Real-time monitoring and alerting functional
• Fallback behavior for missing slippage data
• Unit tests for hook and UI integration
• Documentation updated with usage examples

---

📈 Measurable Impact

• Minimized user losses due to high slippage
• Improved user trust and experience
• Developers gain fine-grained control over safe transfers
• Enhanced integration with benchmarking and fee monitoring

---

🧪 Testing Requirements

• Simulate transactions with varying slippage levels
• Verify real-time alerting in hooks and UI components
• Test threshold configurations and overrides
• Confirm fallback behavior for missing or delayed data
• Validate SSR-safe and headless mode compatibility

---

📚 Documentation Requirements

• Add “Slippage Alert System” section to README
• Provide hook usage example:

const { slippage, threshold, exceeded } = useSlippageAlert({
  token: "USDC",
  sourceChain: "Ethereum",
  destinationChain: "Stellar",
  maxSlippagePercent: 1.0,
});

• Include examples for UI and headless mode integration
• Document configuration options and fallback behavior

---

[drips-wave]

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[dDevAhmed]

@dDevAhmed has applied to work on this issue as part of the Stellar Wave Program's 2nd wave.

I’d like to work on this issue and plan to implement a clean, scalable solution aligned with Stellar Wave architecture. Happy to collaborate and ship within the expected timeline.

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[drips-wave]

Congratulations, @dDevAhmed! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on February 26, 2026.

🧑‍💻 @dDevAhmed: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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