What does the cryptic crossword clue "One may be at a peak after ropy performance (7)" mean?

The definition is "One may be at a peak after ropy performance". The wordplay uses a cryptic definition. Cryptic definition The answer is CLIMBER.

One may be at a peak after ropy performance (7)

Guardian Cryptic #29100 | 5 Down | 2023-06-19 flower