spanDEX

spanDEX is a free and open-source meta-aggregator that helps developers, traders, and AI agents fetch quotes from multiple DEX aggregators to find the best price. It expands tokens, pools, and chains beyond any single aggregator, provides redundancy when a provider fails, and prevents vendor lock-in.

Key Capabilities:

• Multi-aggregator quote comparison for best-in-class pricing
• Expanded liquidity access across tokens, pools, and chains beyond any single aggregator’s coverage
• Built-in redundancy and automatic failover when providers experience downtime or rate limiting
• Developer-first library design with clear DX and React components for easy integration

Technical Implementation: Available as npm package @spandex/core. Provides programmatic access to execute swaps or return quotes for custom execution logic. Routing decisions informed by Quotebench (benchmark.withfabric.xyz), a real-time benchmarking system tracking quote Stability, Latency, Accuracy, and Price (S.L.A.P.) across aggregators.

Use Cases: Wallets seeking default best pricing, DeFi protocols requiring optimal treasury/liquidation execution, trading interfaces needing institutional-grade liquidity, yield optimizers minimizing rebalancing spreads, financial institutions executing large trades, cross-chain applications combining with bridge aggregators.

Development: Created by Fabric. Open-source codebase available on GitHub. Full documentation at spandex.sh. Transparent, auditable routing logic without vendor lock-in enables composability and community-driven evolution as new aggregators emerge.

Value Proposition: Ensures no trade opportunity is missed due to aggregator-specific limitations while providing critical infrastructure redundancy for production applications.