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Operations and Execution

Guarantee

sd-guarantee · bian-operations

A BIAN service domain in Operations and Execution. It applies the Fulfill functional pattern to the Guarantee Facility, with the Guarantee Facility Fulfillment Arrangement as its control record — one independent Spring Boot microservice on the platform's Cilium eBPF mesh.

View repository ↗The 162-domain platform ↗

Business DomainLoans and Deposits
Functional PatternFulfill
Asset TypeGuarantee Facility
Control RecordGuarantee Facility Fulfillment Arrangement

USEWhat it is used for

Representative use cases for the Guarantee service domain within a BIAN-aligned core-banking landscape.

APIBIAN semantic API

The control record (Guarantee Facility Fulfillment Arrangement) is exposed through uniform BIAN action terms. Java 21 · Spring Boot 3, OpenAPI at /swagger-ui.html, health at /actuator/health.

MethodPathBIAN action
GET/v1/service-domainService metadata
POST/v1/guarantee-facility-fulfillment-arrangement/initiateInitiate
GET/v1/guarantee-facility-fulfillment-arrangement/{crId}/retrieveRetrieve
PUT/v1/guarantee-facility-fulfillment-arrangement/{crId}/updateUpdate
PUT/v1/guarantee-facility-fulfillment-arrangement/{crId}/controlControl (suspend / resume / terminate)

INTBackend integrations

The systems and standards a real deployment of Guarantee would transact with.

RUNRun it yourself

Each service domain is its own standalone Spring Boot repository — clone and run in seconds, or deploy onto Kubernetes with the bundled Helm chart behind the Cilium mesh.

# run this service domain standalone
git clone https://github.com/Sreenivas-Sadhu-Prabhakara/sd-guarantee
mvn -f sd-guarantee spring-boot:run
curl localhost:8080/v1/service-domain

# or deploy onto Kubernetes (Cilium eBPF mesh)
helm upgrade --install sd-guarantee ./helm -n bian-operations

FAQQuestions

What is the BIAN “Fulfill” functional pattern?
A Fulfill service domain runs the full lifecycle of a product or service arrangement — origination, servicing and closure. Guarantee applies it to the Guarantee Facility.
What is a BIAN service domain?
BIAN (the Banking Industry Architecture Network) decomposes a bank into independent service domains, each owning exactly one business capability. Guarantee is the service domain for Loans and Deposits; it manages the Guarantee Facility Fulfillment Arrangement and exposes it through standard BIAN action terms.
What business area does Guarantee belong to?
Guarantee sits in the Operations and Execution business area — the operational core that executes payments, positions, settlements and transactions. It runs in the bian-operations namespace as one independent Spring Boot microservice.
Is Guarantee production-ready?
It is an educational reference implementation: a real BIAN REST API over an in-memory store, ready to be filled with domain logic. It is not a live bank and is not affiliated with BIAN.

SEEIn the landscape

Guarantee is one of 162 BIAN service domains on the platform. Explore the rest:

▚ Platform overview The Master Catalog (162 domains) This repository ↗