MCP Helius

Instructions

Implementation Reference

• src/handlers/helius.ts:490-497 (handler)

  The main handler function that executes the tool logic by calling the Helius RPC method to send a Jito bundle.

  export const sendJitoBundleHandler = async (input: SendJitoBundleInput): Promise<ToolResultSchema> => {
    try {
      const bundleId = await (helius as any as Helius).rpc.sendJitoBundle(input.serializedTransactions, input.jitoApiUrl);
      return createSuccessResponse(`Jito bundle sent: ${bundleId}`);
    } catch (error) {
      return createErrorResponse(`Error sending Jito bundle: ${error instanceof Error ? error.message : String(error)}`);
    }
  }

• src/tools.ts:480-491 (schema)

  Input schema definition for the helius_send_jito_bundle tool, specifying serializedTransactions and jitoApiUrl.

  {
    name: 'helius_send_jito_bundle',
    description: 'Send a bundle of transactions to Jito',
    inputSchema: {
      type: 'object',
      properties: {
        serializedTransactions: { type: 'array', items: { type: 'string' } },
        jitoApiUrl: { type: 'string' }
      },
      required: ['serializedTransactions', 'jitoApiUrl']
    }
  },

• src/tools.ts:587-587 (registration)

  Registration of the sendJitoBundleHandler in the global handlers dictionary.

  "helius_send_jito_bundle": helius.sendJitoBundleHandler,

• src/handlers/helius.types.ts:260-263 (schema)

  TypeScript type definition for the input parameters used by the handler.

  export type SendJitoBundleInput = {
    serializedTransactions: string[];
    jitoApiUrl: string;
  }