Having not been at their fluent best in their opening 3-1 win over Kazakhstan, Wales knew this visit to an in-form North Macedonia represented an altogether more challenging assignment.
The home side had won their previous six matches and had not conceded a single goal in the process, although Bellamy had made the point beforehand that these fixtures had been in the Nations League's third tier and against this group's bottom seeds, Liechtenstein.
As Group J's second seeds and standing 38 places above North Macedonia in the world rankings, Wales started this game as favourites, but they were careful not to underestimate opponents who had beaten Italy and Germany in recent years.
The match started at a frenetic pace, with both teams pushing forward and counter-attacking as possession changed hands rapidly
Wales midfielder Jordan James had the game's first shot on target after just 30 seconds, before Tihomir Kostadinov fired wide from 20 yards for the hosts.
The tempo dropped as the first half wore on, Wales seeing plenty of the ball and building patiently from the back but lacking incision in the final third.
Their best move saw James exchange passes with his namesake Daniel and whip a fabulous low cross to the back post for an unmarked Thomas, but the Nantes winger mishit his shot into North Macedonia goalkeeper Stole Dimitrievski.
Wales continued in the same vein in the second half, monopolising possession without creating much in the way of genuine chances.
Bellamy mixed things up by bringing on Moore, a more conventional striker than anyone else on the pitch and a physical focal point for attacks.
North Macedonia toiled without the ball but offered a reminder of their threat when substitute Darko Churlinov had a powerful shot well saved by Karl Darlow.
Wales thought they had the breakthrough when the hosts failed to clear and the ball fell to Johnson, whose shot was blocked on the goal line.
That looked like a costly miss when Allen's lapse allowed Miovski to score what the jubilant home fans thought would surely be the winning goal in the first minute of added time.
But Moore proved his value as something of a throwback in Bellamy's progressive new team, winning the header for Brooks to score with a shot which just about trickled over the line.