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The Problem

The cryptocurrency ecosystem is fragmented across hundreds of chains, bridges, and liquidity sources. Developers building wallets, trading platforms, or DeFi applications face a critical challenge:
  • Multiple integrations required - Each swap provider, bridge, or DEX requires separate integration
  • Inconsistent pricing - No single source offers the best rates across all token pairs
  • Complex routing logic - Determining optimal paths across chains is resource-intensive
  • Maintenance overhead - Managing multiple provider APIs, handling failures, and keeping integrations up-to-date
This fragmentation forces developers to either limit their users to suboptimal rates or invest significant engineering resources into building and maintaining complex aggregation infrastructure.

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What is Crest Meta Aggregator API?

Crest’s meta aggregator API solves liquidity fragmentation by aggregating multiple swap providers and cross-chain bridges into a single, unified interface. With one API integration, you get access to:
  • Multiple liquidity sources - We aggregate quotes from leading swap aggregators and bridges
  • Optimal routing - Our engine automatically finds the best rates and routes for any trade
  • Cross-chain bridging - Seamlessly move assets across different blockchain networks
  • Unified interface - One consistent API regardless of underlying providers

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How It Works

The process is simple:
  1. Request a quote - Your app calls Crest API with swap parameters
  2. Parallel aggregation - Crest queries multiple providers simultaneously
  3. Best quote returned - API returns the best quote with transaction data
  4. Execute on-chain - Your users signs and sends the transaction to the network
With just a few API calls, you can give your users the best possible rates without the complexity.

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Key Benefits

Best Rates Guaranteed

Competitive quotes from multiple providers ensure your users always get optimal pricing

Single Integration

One API replaces dozens of provider integrations, saving months of development time

Cross-Chain Ready

Seamlessly swap and bridge assets across multiple networks

Always Available

Smart fallback mechanisms ensure reliability even when individual providers have issues

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Use Cases

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Wallets

Integrate Crest to offer your users in-wallet swapping and bridging with the best rates across the entire crypto ecosystem.

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Trading Platforms

Provide professional-grade trading with aggregated liquidity, ensuring competitive pricing for all token pairs.

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DeFi Applications

Enable seamless cross-chain asset movement and swapping within your DeFi application.

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Portfolio Management

Allow users to rebalance portfolios across chains with optimal routing and minimal friction.