FullSeam

FullSeam is a Y Combinator-backed company that aI agents for corporate accounting teams. The company participated in the Winter 2026 batch of Y Combinator.

FullSeam builds agents for corporate accounting. Our agents replace manual accounting tasks that typically happen outside of our customers' accounting software, like accounts payable, accounts receivable, and reconciliation.

FullSeam was part of Y Combinator's Winter 2026 cohort, has a team of approximately 3 employees, and is actively operating.