256 Blocks

256 Blocks is an intelligent RPC routing platform for Web3 applications. It sits between your application and blockchain networks, handling traffic distribution, policy enforcement and AI agent integration so you can focus on building rather than managing infrastructure.

Intelligent routing

Traffic is distributed across four global regions using a penalty-based routing algorithm. Each region maintains independent health tracking, so a degraded provider in one location does not affect routing decisions elsewhere. Requests are automatically shifted away from unhealthy endpoints and rebalanced as providers recover.

Policy engine

Declarative policies written in Rego give you fine-grained control over what happens at the RPC layer. You can define transaction approval rules, rate limiting thresholds, access controls and custom validation logic. Policies are versioned and applied consistently across all traffic without code changes to your application.

AI-native integration

256 Blocks provides first-class MCP support for AI agents interacting with blockchain networks. Agents can discover available methods, execute transactions and query on-chain data through a standardised interface with the same policy enforcement applied to every request.

Supported networks

The platform currently supports Ethereum, Base, Optimism, Arbitrum, Polygon and BNB Smart Chain. Additional networks are added based on demand and provider availability.

Pricing

256 Blocks operates on a pay-as-you-go model at $0.02 per 1,000 credits. There are no minimum commitments or monthly fees — you pay only for what you use.

What's next

Gas Sponsorship and an IPFS Gateway are both in development. Gas Sponsorship will let you subsidise transaction fees for your users, while the IPFS Gateway will provide decentralised content retrieval through the same routing infrastructure.