Lomen Blockchain Tools

Example Use Cases

• 1

  Fetch chain metadata (RPC URL, explorers) by chain ID to route requests to the correct network.

• 2

  Query EVM nodes to get the latest block number or full block data (including POA handling) via RPC.

• 3

  Expose standardized, validated tools to LangChain/LangGraph or MCP-enabled IDEs (e.g., Cursor, VSCode) so they can call blockchain functions directly.

Description

Lomen is an open-source, plugin-based framework that standardizes blockchain and web3 tools for use by agents and LLMs. It provides a BasePlugin/BaseTool structure and includes built-in plugins for chain metadata and EVM RPC (get block, get block number). Adapters are provided for LangChain/LangGraph and the Model Context Protocol (MCP), and a CLI (uvx lomen) can run an MCP server with selectable plugins. The framework simplifies integrating RPC calls and on-chain tooling into agent workflows while keeping tools modular and discoverable.