tools-only PRD: Cross-Chain Bridge Monitor
Summary
One-liner: Monitor cross-chain bridge activity, liquidity, and security status Domain: Cryptocurrency / Bridge Infrastructure Users: DeFi users, Developers, Security researchers
Problem Statement
Cross-chain bridges are critical infrastructure but also high-risk targets. Users need real-time visibility into bridge health, liquidity, transaction status, and security incidents to make informed bridging decisions.
User Stories
As a DeFi user, I want to check bridge liquidity before initiating a transfer, so that I don't get stuck with delayed withdrawals.
As a trader, I want to compare bridge fees and transfer times across providers, so that I can choose the most cost-effective route.
As a security researcher, I want to monitor bridge TVL changes, so that I can detect potential exploits or unusual activity.
As a developer, I want to track my pending bridge transactions, so that I can provide accurate status updates to users.
Functional Requirements
- REQ-1: Fetch and display bridge TVL across supported protocols
- REQ-2: Track bridge liquidity by chain and token
- REQ-3: Monitor pending and completed bridge transactions
- REQ-4: Compare bridge fees and estimated transfer times
- REQ-5: Alert on significant TVL changes or security incidents
- REQ-6: Support multiple bridge protocols (Wormhole, LayerZero, Stargate, Across, etc.)
API Integrations
- DefiLlama Bridges API: Bridge TVL, volume, and protocol data
- Bridge Protocol APIs: Protocol-specific transaction status
- RPC Endpoints: On-chain verification of bridge transactions
- Security Feeds: Bridge exploit alerts and audit status
Success Metrics
- Activation triggers correctly on bridge-related queries
- TVL and liquidity data accurate within 5 minutes
- Transaction status tracking 99% reliable
- Fee estimates within 10% of actual costs
Non-Goals
- Executing bridge transactions (read-only monitoring)
- Providing trading advice or recommendations
- Real-time arbitrage detection
- Private/permissioned bridge monitoring