# Developer

- [APIs](/developer/apis.md)
- [Supported Chains](/developer/apis/supported-chains.md): The evm & non-evm blockchains supported on OpenOcean
- [Swap API](/developer/apis/swap-api.md): Explore these docs and let our API empower your swap and/or arbitrage trading across EVM and non-EVM chains, including Solana!
- [Contracts of Chains](/developer/apis/swap-api/contracts-of-chains.md): OpenOcean’s current contract addresses across our supported chains
- [Guide](/developer/apis/swap-api/guide.md): An overview guide on how to integrate OpenOcean Swap API
- [API V4](/developer/apis/swap-api/api-v4.md): The latest API V4 Drift
- [API V3](/developer/apis/swap-api/api-v3.md)
- [Permit2](/developer/apis/swap-api/permit2.md): Here’s the guideline of using Permit2 in OpenOcean Swap API
- [SDK](/developer/apis/swap-api/sdk.md)
- [API Pricing & Access](/developer/apis/swap-api/api-pricing-and-access.md)
- [Advanced Usage](/developer/apis/swap-api/advanced-usage.md)
- [GMX  Exclusive API](/developer/apis/swap-api/advanced-usage/gmx-exclusive-api.md): This API is exclusively to leverage GMX V1 and V2 pools on Arbitrum. To ensure users get the best trading rates, v1 and v2 pools are compared and the API swaps with the most favorable option.
- [Exact out](/developer/apis/swap-api/advanced-usage/exact-out.md)
- [Solana Swap API](/developer/apis/solana-swap-api.md)
- [Gasless Swap API](/developer/apis/gasless-swap-api.md)
- [Guide](/developer/apis/gasless-swap-api/guide.md)
- [API](/developer/apis/gasless-swap-api/api.md)
- [Demo Code](/developer/apis/gasless-swap-api/demo-code.md): Front-end code example
- [DCA API](/developer/apis/dca-api.md)
- [Guide](/developer/apis/dca-api/guide.md)
- [API](/developer/apis/dca-api/api.md)
- [WebSocket](/developer/apis/dca-api/websocket.md)
- [Guide](/developer/apis/dca-api/websocket/guide.md)
- [Limit Order API](/developer/apis/limit-order-api.md)
- [Guide](/developer/apis/limit-order-api/guide.md)
- [API](/developer/apis/limit-order-api/api.md)
- [Zap API](/developer/apis/zap-api.md)
- [API](/developer/apis/zap-api/api.md)
- [Use Cases](/developer/apis/use-cases.md)
- [Sweep Swap API](/developer/apis/sweep-swap-api.md)
- [Guide](/developer/apis/sweep-swap-api/guide.md)
- [API](/developer/apis/sweep-swap-api/api.md)
- [Meme API](/developer/apis/meme-api.md): Build, Trade, Innovate
- [Ticket API](/developer/apis/ticket-api.md)
- [API](/developer/apis/ticket-api/api.md)
- [Widget](/developer/widget.md)
- [Getting Started](/developer/widget/getting-started.md)
- [Customize Theme](/developer/widget/customize-theme.md)
- [Other Reference](/developer/widget/other-reference.md)
- [Widget V2](/developer/widget/widget-v2.md): Support both same chain & cross-chain swaps - Recommended to use
- [Getting Started](/developer/widget/widget-v2/getting-started.md)
- [Advanced Integration](/developer/widget/widget-v2/advanced-integration.md)
- [Integration Examples](/developer/widget/widget-v2/integration-examples.md)
- [Developer Resources](/developer/developer-resources.md): The detailed documentation for the API, SDK, widget relevant information.
- [Common Error Code](/developer/developer-resources/common-error-code.md)
- [Developer references & glossary](/developer/developer-resources/developer-references-and-glossary.md): Any supplementary information you may need
- [AI Agents](/developer/ai-agents.md): OpenOcean-skills