MCP Helius

Instructions

Implementation Reference

• src/handlers/helius.ts:64-71 (handler)

  The main handler function that executes the tool logic by calling helius.connection.getBlockHeight with optional commitment and returns formatted success or error response.
  export const getBlockHeightHandler = async (input: GetBlockHeightInput): Promise<ToolResultSchema> => { try { const blockHeight = await (helius as any as Helius).connection.getBlockHeight(input.commitment); return createSuccessResponse(`Block height: ${blockHeight}`); } catch (error) { return createErrorResponse(`Error getting block height: ${error instanceof Error ? error.message : String(error)}`); } }
• src/tools.ts:46-55 (schema)

  MCP tool schema definition including name, description, and input schema for validation.
  name: "helius_get_block_height", description: "Get the block height of the Solana blockchain", inputSchema: { type: "object", properties: { commitment: { type: "string", enum: ["confirmed", "finalized", "processed"] } }, required: [] } },
• src/tools.ts:551-551 (registration)

  Maps the tool name to its handler function in the handlers dictionary.
  "helius_get_block_height": getBlockHeightHandler,
• src/handlers/helius.types.ts:12-14 (schema)

  TypeScript interface defining the input parameters for the getBlockHeightHandler.
  export type GetBlockHeightInput = { commitment?: "confirmed" | "finalized" | "processed"; }
• src/tools.ts:5-5 (registration)

  Import statement that brings the getBlockHeightHandler into src/tools.ts for registration.
  getBlockHeightHandler,