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brreaker

Turn off the breaker, Inspect all visible portions of the wire for damage or discoloration. If no problems are apparent, replace the duplex receptacle. (cost $1)
If no fix, then next step is ; turn off the main breaker, replace the breaker (cost $10)
Edit; While you are in there, inspect the breaker to bus bar contacts for evidence of arcing. eg pitting, discoloration

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Is it a plain breaker, gfci or afci?

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I agree with Tig . Obviously looking for any sign of wire damage is the first step. But most likely it is a bad connection at the outlet, a bad outlet, or a bad breaker. Any of which are cheap and easy to fix.

Did you put any nails or screws into walls lately (hung pictures, mounted cabinets/shelfs, etc.) ?
Driving a nail or screw through a hidden cable in the wall may go unnoticed at the time of the incident if the breaker trips quickly.
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I'm betting that the outlet's connected via a backstabbed connection. If it is, remove the conductors, clip off the ends of the wires that were backstabbed, strip a fresh 3/4" of clean wire and install it under the screws. The problem will likely cease.

Backstabs get loose and an intermittent connection on a motor load can easily trip a breaker due to the large inrush (and that goes even more for refrigeration compressors that restart too soon after shutting off).