Backend infrastructure
Core runtime
- Bun — primary runtime, package manager, and test runner for superior performance
- Turborepo — orchestrates the monorepo across
/api,/sdk,/mcp,/db, and/zones
API framework
- Hono — fast, lightweight web framework used for routing and RPC
- Zod — exhaustive runtime validation and type inference across every endpoint
Data layer
- Drizzle ORM — lightweight TypeScript ORM for schema management and type-safe queries
- PostgreSQL — primary relational database (managed via Supabase or Neon)
- Redis — job queues (BullMQ) and rate limiting (Upstash)
Web3 and blockchain integration
| Stack | Purpose |
|---|---|
| Tempo SDK | Primary settlement rail; Mainnet and Zone deposits, transfers, withdrawals |
| Solana Web3.js | High-velocity transaction handling on Solana |
| Viem | Type-safe interactions with EVM chains (Base, Arc, Tempo Mainnet) |
| Arc SDK | Institutional L1 with native KYC and Travel Rule support |
| Circle SDK | USDC issuance, mint/redeem, and CPN integration |
Agentic-payment protocols
REM operates as the on-ramp for emerging agentic-payment protocols so institutional balances can settle into them without bespoke integration work:- Visa Intelligent Commerce and MasterCard Agentic Payments — card-network agent rails
- x402 — HTTP-native machine payment protocol
- MPP — Machine Payment Protocol for batched agent settlement
- MCP — Model Context Protocol server for direct AI agent integration
Reliability and security
Production hardening
- Idempotency — CUID2-based idempotency keys on all wallet operations to prevent duplicate sends
- Circuit breakers — individual breakers for external dependencies (Tempo, Solana RPC, Arc, Circle) so the system fails fast and recovers gracefully
- Rate limiting — consistent-hash rate limiting per API key
- Audit logging — every sensitive operation logged with a permanent timestamp and actor ID
- Signed webhooks — HMAC-SHA256 on every outbound event
Monitoring
- Sentry — real-time error tracking and performance monitoring
- Pino — structured JSON logging for deep observability
Developer surface
| Tool | Purpose |
|---|---|
| TypeScript SDK | Auto-generated from the OpenAPI specification — @rem-money/sdk |
| Python SDK | Fully typed, autocompletion |
| Go and REST | First-class clients for backend integration |
| MCP Server | Model Context Protocol server for direct AI agent integration |
| Developer Dashboard | Manage API keys, webhooks, and transaction logs |
Where each module sits
| Module | Primary chain | Settlement model |
|---|---|---|
| Stablecoins | Tempo, Solana, Base, Arc | Multi-chain routed |
| Tokenisation | Tempo, Solana, Base, Arc | Issuance + lifecycle on chosen rail |
| Compliance Engine | Cross-cutting | Token- and contract-layer enforcement |
| Settlement Zones | Tempo (private) | Encrypted state, public-rail bridge |
Custom solutions
Off-the-shelf, the platform runs as a managed service. For institutions that need dedicated deployments or bespoke integration, REM ships custom infrastructure with you.Private deployments
Single-tenant deployments inside your VPC, with dedicated keys, dedicated rate limits, and infrastructure isolation.
Bespoke SDKs
Custom SDKs in additional languages or wrapped into your internal developer platform — branded, scoped, and pre-integrated.
Core banking integration
Adapters into legacy core banking, ledger, treasury, and ERP systems — including reconciliation pipelines and accounting feeds.
Custom observability
Forwarders into your existing observability stack (Datadog, Splunk, Grafana), dashboards, and on-call runbooks.
Talk to engineering
Share your stack and your constraints. We’ll scope a custom infrastructure engagement.