MCP Helius

Instructions

Implementation Reference

• src/handlers/helius.ts:291-299 (handler)

  The handler function that implements the core logic for the 'helius_get_leader_schedule' tool by calling the Solana RPC getLeaderSchedule method via the Helius client.

  export const getLeaderScheduleHandler = async (input: GetLeaderScheduleInput): Promise<ToolResultSchema> => {
    try {
      // getLeaderSchedule doesn't accept parameters in the real SDK
      const leaderSchedule = await (helius as any as Helius).connection.getLeaderSchedule();
      return createSuccessResponse(`Leader schedule: ${JSON.stringify(leaderSchedule, null, 2)}`);
    } catch (error) {
      return createErrorResponse(`Error getting leader schedule: ${error instanceof Error ? error.message : String(error)}`);
    }
  }

• src/tools.ts:242-253 (schema)

  The input schema definition for the 'helius_get_leader_schedule' tool, specifying optional slot and commitment parameters.

  {
    name: "helius_get_leader_schedule",
    description: "Get the leader schedule for an epoch",
    inputSchema: {
      type: "object",
      properties: {
        slot: { type: "number" },
        commitment: { type: "string", enum: ["confirmed", "finalized", "processed"] }
      },
      required: []
    }
  },

• src/tools.ts:568-568 (registration)

  The registration of the tool name to its handler function in the handlers dictionary.

  "helius_get_leader_schedule": getLeaderScheduleHandler,