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FullSeam

FullSeam is a YC Winter 2026 (W26) company. Team of 3.

About FullSeam

GPAgent's own fund-neutral profile, written from public information. Updated Oct 4, 2026.

Summary

FullSeam builds AI agents for corporate accounting teams, handling accounts payable, accounts receivable, cash application, and reconciliation. The agents take over manual, document-heavy work that accountants typically do outside their core accounting software, such as scanning invoices, coding GL accounts, and posting to ERPs. The target customer is the finance and accounting function at B2B companies.

Go-to-market

Corporate accounting teams sign up and book a demo through the FullSeam website, pointing to a sales-assisted entry motion targeting finance departments at B2B companies.

From the Y Combinator listing

How FullSeam describes itself in Y Combinator's public directory.

AI agents for corporate accounting teams

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.

Facts

Industry
B2B / B2B -> Finance and Accounting
Team size
3
Status
Active
Stage
Early

Founders (3)

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