build_event_topic
How to use it
build_event_topic is exposed by the Onchain MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the build_event_topic tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Onchain MCP
npx @bankless/onchain-mcpOther tools in Onchain MCP (15)
(array, required): List of contract addresses to filter events
(array, required): Event arguments types, each containing:
(string, required): The contract address
(array, required): Input parameters for the method call, each containing:
(string, required): The contract method to call
(string, required): Event name (e.g., "Transfer(address,address,uint256)")
(string, required): The blockchain network (e.g., "ethereum", "polygon")
(array, optional): Optional additional topics (can include null values)
(array, required): Expected output types, each containing:
(string, required): Primary topic to filter events
(string): The type of the input parameter (e.g., "address", "uint256")
(any): The value of the input parameter