NodeCache is an EVM RPC caching layer that intercepts read-only Ethereum calls like eth_call and eth_getBalance to reduce redundant requests to providers like Infura and Alchemy. It caches responses with method-specific TTLs, preventing duplicate queries for unchanged blockchain data and lowering operational costs and rate-limit pressure for developers and indexers.
A11 is an open-source toolkit that converts async functions into reusable, typed actions with named inputs and outputs that can stream across local processes, services, browsers, or be invoked by AI models. It provides a unified interface for orchestration, discovery, and remote execution without requiring a graph or agent runtime, integrating with frameworks like LangGraph, MCP, and gRPC.