For Finance Systems
Connect what you run. Replace nothing.
You own the ERP, the planning tool and the integrations between them. Sebastian connects to what you have, reads from it, and writes only what someone has approved. Every figure keeps its source.

In the product
How Finance Systems teams use Sebastian
Click a figure on a record and the panel shows the source system, the clause and when it was last refreshed.
Records › Contracts › Acme Corp
Acme Corp · Enterprise subscription
Original agreement · 1 July 2026200 seats · $100K a month · net 30 · auto-renews June 2027Signed
Amendment 02 · 2 October25 more seats · +$5K a month · go-live credit clause §3.2Treatment in review
Acme Corp›Amendment 02›Clause 2.1
Annual value
$1.26M
Where it comes from
Sum of the recurring fees in the original agreement and amendment 02, annualised.
“Customer licenses an additional 25 seats at $200 per seat per month, co-terminous with the Agreement.”
History
Original agreement · $1.20M a year1 Jul
Amendment 02 signed · +$60K a year2 Oct
Figure recalculated and cited to clause 2.12 Oct
Sources
DocuSign envelope
Salesforce opportunity
Before and after
Your systems, before and after
| Aspect | Status quo | Sebastian |
|---|---|---|
| Systems of record | Each tool owns something. A spreadsheet joins them. | Each tool keeps what it owns. Sebastian joins them and labels the result. |
| Write-back | Manual journal uploads, or an integration you do not trust. | Approved entries only, approver recorded. |
| Freshness | Whenever the export last ran. | Shown on every figure. |
| Models | Workbooks in a shared drive. | Imported, mapped, versioned. |
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