England and Australia now turn their attention to a five-match series starting at the Oval on Wednesday and Agar thinks the tourists, who beat Middlesex by 101 runs in their final warm-up match, can take advantage of any dent to England's confidence.
"I have spent a lot of time with them off the field and at training sessions and making sure that we are really clear so that when we get out on game day it is about keeping calm and executing what we've spoken about".
This was Scotland's first match since March, when they narrowly missed out on qualification for the 2019 World Cup in England and Wales.
"To be captain of the team is a huge honour and massive privilege, so I am just looking forward to getting into it on Wednesday", he said.
How do I watch online live streaming of Scotland vs Pakistan, 2nd T20I match? . They're a really risky side, though, and you can't ever take a side like that lightly. Alex Hales too registered his half century but could not convert it. Moeen Ali and Liam Plunkett fought hard till the end but failed to take England home.
The opener will join the commentary team for the second ODI in Cardiff on Saturday. The visitors will be led by Tim Paine and not Steve Smith or David Warner as both of them have been banned for 12 months in the aftermath of the ball-tampering scandal.
Scotland cricket enjoys biggest-ever day with win over England
Give him the scoreboard, therefore, and he could very well give you the game - whatever the format.
Despite their lofty status, England go into the game after a shock six-run defeat to Scotland in Edinburgh and will be without talismanic allrounder Ben Stokes and key bowler Chris Woakes.
Becoming the first Scot to make a century against England, Calum MacLeod hit 140 runs - his photographer father Donald was covering the match - as the Scots raced to a total of 371 for the loss of five wickets in their allotted 50 overs.
"We're always trying to get someone to stick their hand up and we always celebrate each other's success", MacLeod told Sky Sports during the break between innings.
"We need to continue what we have been doing and continue improving though".
College football coaches praise new NCAA redshirt rule
The old rule was meant to discourage other schools from tampering with student-athletes. The new rule will go into effect during the upcoming, 2018-19 season.