The most common and most likely answer to this crossword clue is the 10 letter word GO-BETWEEN
G
O
-
B
E
T
W
E
E
N
More clues leading to the result GO-BETWEEN
- Mediator has to try and gamble — little point
- Mediator‘s attempt to risk small point
- Information, involving tangled web, to end in remorse for intermediary
- Agent‘s gone swimming round punt on water
- Intermediary‘s game gamble with small gain, ultimately
- We beg to differ with European named principally as peace-keeper?
Buddy explains!

The straight part
We know that "Agent" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case agent = go-between.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does GO-BETWEEN mean?
GO-BETWEEN noun- An intermediary or middleman.
- A shogi piece, used in chu shogi and larger shogi variants, that can move one step straight forward or straight backwards.