Totogi Charging-as-a-Service API
Totogi Charging-as-a-Service is a serverless, multi-tenant 5G Standalone and 5G Advanced converged charging system delivered as SaaS on AWS, with built-in policy control. Its account-management surface is a GraphQL API — served by AWS AppSync, region-pinned, and fully documented in public at docs.api.totogi.com — useful for querying balances and event data records, provisioning subscribers and devices, subscribing accounts to plans, and managing tenant configuration. The published contract carries 32 queries, 61 mutations and 480 type definitions, and it is unusually explicit about runtime semantics: every operation states its authorized roles, every operation returns a result union whose members are the success payload plus each typed error it can raise (68 error types implementing a common Error interface with errorCode/errorMessage), mutations accept a caller-supplied transactionId to guarantee idempotency, RateLimitExceeded carries a retryAfter timestamp, and deprecated fields publish both a deprecated date and an expiration date. Access is OAuth 2.0 client-credentials only; there is no self-serve signup and no sandbox.