TECHNICAL INTEGRATION
Developer Hub
API contracts, authentication, webhooks, idempotency, error handling and operational principles for enterprise integrations.
Contract first, implementation second
Data models, authorization boundaries, failure behavior and retry rules are defined before implementation.
Authentication
API keys, signed requests, token lifecycle and authorization scopes are defined for the target architecture.
API keys, signed requests, token lifecycle and authorization scopes are defined for the target architecture.
REST API
Resource-oriented endpoints, consistent status codes, versioning and backward-compatibility principles.
Resource-oriented endpoints, consistent status codes, versioning and backward-compatibility principles.
WebSocket
Connection lifecycle, reconnect behavior and ordering considerations for real-time event streams.
Connection lifecycle, reconnect behavior and ordering considerations for real-time event streams.
Webhooks
Signed notifications, retries, delivery identifiers and duplicate-safe processing.
Signed notifications, retries, delivery identifiers and duplicate-safe processing.
Idempotency
Safe handling of repeated requests for critical write operations such as payments, orders and transactions.
Safe handling of repeated requests for critical write operations such as payments, orders and transactions.
Error model
Machine-readable error codes, correlation IDs and traceability for support teams.
Machine-readable error codes, correlation IDs and traceability for support teams.
Rate limits
Quotas, backoff and controlled retry principles for predictable client behavior.
Quotas, backoff and controlled retry principles for predictable client behavior.
Observability
Logs, metrics, traces and event identifiers for end-to-end integration diagnostics.
Logs, metrics, traces and event identifiers for end-to-end integration diagnostics.
Example API contract
Examples illustrate an integration pattern; actual endpoints are defined by the project contract.
POST /v1/transactions
Idempotency-Key: <unique-key>
Authorization: Bearer <token>
{
"reference": "client-reference",
"asset": "ASSET",
"amount": "100.00"
}REPRESENTATIVE CONTRACT
Integration behavior should not be ambiguous.
The following is a representative contract model; actual endpoints and schemas are defined per engagement.
REQUEST
POST /v1/transactions
Authorization: Bearer <token>
Idempotency-Key: <unique-key>
{
"reference": "client-reference",
"asset": "ASSET",
"amount": "100.00"
}ERROR MODEL
{
"error": {
"code": "POLICY_REJECTED",
"message": "Request rejected",
"request_id": "req_..."
}
}WEBHOOK
event: transaction.updated signature: <signed-header> delivery_id: <unique-id> verify → persist → process → 2xx