Use Spreadsheets as a Rules Engine
One source of truth for business logic
Keep formulas and decision tables in a spreadsheet, expose a compute API, and apply consistent rules across all your apps.
How to Centralize Your Rules
Upload, configure I/O, and evaluate
01
Upload Logic
Keep formulas, thresholds, and lookup tables in a single spreadsheet.
rules.xlsx · “Eligibility” tab
Decision Table
CreditScoreDTIIncomeDecision
≥ 720≤ 35%> 60k Approve
660–719≤ 40%> 80k Review
< 660——Decline
Formula Snippets
=IF(A2>=720,"Approve",IF(AND(A2>=660,B2<=0.4,C2>80000),"Review","Decline"))
=VLOOKUP(region,RateTable!A:B,2,TRUE)
=VLOOKUP(region,RateTable!A:B,2,TRUE)
02
Declare Inputs & Outputs
Configure typed inputs and response shapes for deterministic evaluations.
Inputs & Outputs · version v12
Inputs
credit_scoreint
dtifloat
incomecurrency
Outputs
decisionenum
reasonstring
aprnumber
type-safe inputs · field-level access · environment pins
03
Evaluate via API
Call a compute endpoint from your apps for consistent decisions everywhere.
POST /rules/evaluate
{ "credit_score": 705, "dti": 0.33, "income": 92000 }
{ decision: "Review", reason: "Tier-B: manual check", apr: 6.9 }
evaluated on v12 · promote to prod when ready
Why Teams Adopt Spreadsheet Rules
Consistency, speed, and auditability
1 place
Centralized Logic
Move rules out of scattered services and wikis into one source of truth.
90%
Faster Changes
Edit the sheet to update business rules—no redeploy required.
3x
Developer Focus
Engineers ship features instead of re-implementing formulas.
Industries Using Spreadsheet Rules
Where centralizing logic pays off most
Frequently Asked Questions
Ready to Transform Your Workflow?
Get started today and see how this use case can revolutionize your business processes.