SMS
Transactional messaging through the API, with delivery tracking and provider events when the relevant integration is configured.
USSD/SMS access layer, Guinea-Bissau
Bring the Stellar ecosystem to any phone.
FBG CPaaS is the communication infrastructure layer that connects APIs, SMS, voice, and USSD so digital and financial services can reach people using basic phones. It is the planned access layer for the USSD↔Stellar bridge behind GNB Coin and BUBANK.
Maturity Notice
FBG CPaaS is a communication infrastructure platform (USSD/SMS/voice) under development. The API is available for integration; production USSD service with mobile network operators is in the integration and partnership phase. The features described may be in testing or planning.
- Access
- USSD/SMS for basic phones
- Ready now
- Production backend, API and SDK
- In progress
- USSD with GSM operators
NETWORK / 245 API available
COMMON LAYER
FBG
access + audit
01SMSnotify
02VOICEanswer
03USSDin integration
Built for developers, institutions, and connectivity partners.
GOVERNMENTSENTERPRISESFINTECHSOPERATORSSTELLAR
01 / Infrastructure
Three channels.
One single operation.
The platform standardizes authentication, events, audit trails, and usage records so governments, enterprises, and developers can integrate communication channels without rebuilding the operational layer for every provider.
Voice
A layer for programmatic calls and voice callbacks, prepared for support, verification, and service workflows.
USSD
Basic-phone journeys for queries and financial flows. The API is ready; real USSD access depends on GSM integrations currently in progress.
02 / Stellar ecosystem and inclusion
Digitizing without excluding.
The simplest channel can carry sophisticated infrastructure. FBG CPaaS is the ecosystem access layer: it connects basic phones, communication APIs, and financial services built on Stellar, without claiming that live operator USSD traffic is already in production.
USSD ↔ Stellar bridge
Designed to bring Stellar-linked financial interactions to basic phones through USSD/SMS once GSM partnerships and integrations are completed.
Ecosystem infrastructure
Enables the planned USSD→Stellar reach for solutions such as GNB Coin and BUBANK, while clearly separating the available API from operator-dependent USSD service.
Auditable API/SDK
Scoped authentication, signed webhooks, traceability, and metrics for developers, governments, and enterprises that need technical and institutional control.
03 / Developers
From the first call
to production.
The API and SDK are available for integration with SMS, voice, events, billing, and communication flows. Operator-connected USSD is on the integration roadmap and should not be presented as already carrying live GSM traffic.
POST /developer/v1/sms/messages
curl https://fbg-cpaas.onrender.com/developer/v1/sms/messages \
-H "x-api-key: <apiKey>" \
-H "x-tenant-id: <tenant>" \
-H "content-type: application/json" \
-d '{
"provider": "orange",
"to": "245955000123",
"fromId": "FBG",
"body": "Your appointment has been confirmed."
}'AVAILABLEHTTP API + TypeScript SDK
SECURITYHMAC, scopes, and idempotency
OPERATIONSBilling by channel and metric
PLANNEDGSM USSD with operator partners
Open repository
04 / Maturity and next steps
Connect Stellar rails to local GSM networks.
- NowAPI available
Production-hosted backend, TypeScript SDK, and endpoints for partner integration, technical testing, and validation.
- In progressGSM partnerships
Operator integration to enable real USSD service, with pilots planned for GNB Coin and BUBANK.
- Next phaseProduction and expansion
After operator agreements and testing, activate USSD→Stellar flows and assess replication in other Lusophone and regional markets.
Native controls
Trust that can be verified.
01 / HMAC signatures
02 / Tenant-based RBAC
03 / Audit trail
04 / Health checks
05 / IP allowlist
06 / Anti-duplication protection
The bridge between basic phones and Stellar-based financial services starts with an API that is honest about its maturity.