Introduction

Execute Blockchain Without the Complexity

MetaKeep Lambda transforms smart contract interactions into simple REST APIs. Import any existing contract or deploy your own, then execute blockchain operations through familiar HTTP calls. No gas management, no transaction complexity, no RPC infrastructure overhead.

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EIP-7702 Support Coming Soon**

Native support for EIP-7702 account delegation is on our roadmap, bringing even more flexibility to how you interact with smart contracts.

The Lambda Difference

Any Contract, Zero Modifications

Import deployed contracts exactly as they are. Lambda wraps them with our meta-transaction infrastructure while maintaining full
compatibility.

Gasless for Your Users

Users sign with their MetaKeep wallet - Lambda handles all gas fees through meta-transactions. Your users never need
cryptocurrency.

Built for Production

• Automatic retries with intelligent error categorization
• Nonce management that prevents conflicts in parallel executions
• Multi-provider infrastructure across Alchemy, Moralis, Ankr, and more
• Comprehensive error handling with specific status codes for every scenario

How Lambda Works

1. Import or Deploy - Bring any smart contract into Lambda
2. Get an API - Every contract function becomes an HTTP endpoint
3. Execute at Scale - Call functions through REST APIs
4. Handle Complexity - Lambda manages gas, nonces, and retries

Two Execution Modes

Standard Lambda

Execute single contract calls with meta-transaction support. Perfect for simple interactions and getting started quickly.

Lambda with Business Wallets

Our advanced Account Abstraction mode that enables:

• Batch transactions - Up to 10 operations in a single atomic call
• Direct payments - Send ETH/SOL without wrapper contracts
• Complex operations - Combine function calls and value transfers
• Session management - Create isolated wallets for specific operations

Supported Blockchains

EVM Chains:

• Ethereum (Mainnet, Sepolia)
• Polygon (Mainnet, Mumbai, Amoy)
• Binance Smart Chain (Mainnet, Testnet)
• Base (Mainnet, Sepolia)
• Avalanche (Mainnet, Testnet)

High-Performance Chains:

• Solana (Mainnet, Testnet)

Why Developers Choose Lambda

• Proven Infrastructure: Built on battle-tested meta-transaction contracts
• Real Error Recovery: Automatic retries for gas issues, network errors, and timeouts
• Parallel Execution: Database-backed nonce management prevents conflicts
• Multi-Provider Reliability: Automatic failover across multiple RPC providers

Get Started

Lambda is available today for all MetaKeep developers. Choose your path:

• ./evm-lambda - For Ethereum and EVM-compatible blockchains
• ./solana-lambda - For Solana's high-performance blockchain