Platform integration steps

Launch on Fundiin Financial Platform.

One launch path for merchant and lender integrations.

Start Explore lender APIs

Before you begin

Initial checklist

Pick merchant or lender scope

Assign owners

Get sandbox credentials

Merchant + Lender + Fundiin

Launch plan

Implementation phases

Pick your surface, build, test, and go live.

Scope

Choose surface

Discovery

Merchant APIs, plugins, JS Elements, or lender APIs.

Outcome

Scope confirmed.

Define API and webhook scope
Confirm owners

Merchant APIs Lender Integration

Onboard

Partner onboarding

1 day

Create the partner profile and get sandbox access.

Outcome

Credentials ready.

Submit onboarding info
Confirm callback owner

Partner registration Commerce plugins

Build & validate

Sandbox build

SIT Phase

Implement APIs or webhooks and validate signing.

Outcome

SIT passed.

Configure callbacks
Test signatures, retries, and idempotency

Merchant APIs Lender Webhooks Signature security

Launch

UAT & go live

Go-live

Run UAT and switch to production.

Outcome

Production ready.

Configure production credentials
Confirm monitoring and support

Merchant Portal Lender docs

Production gate

UAT Checklist

Final checks before production.

Scope confirmed

HMAC verified

Retries and idempotency tested

Monitoring ready

Need help?

Contact the platform integration team

Fundiin will route merchant and lender teams to the right launch path.

Start partner onboarding Back to platform overview