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photoncloud-monorepo/creditservice/README.md

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CreditService

creditservice is a minimal reference service that proves PhotonCloud can integrate vendor-specific quota and credit control with platform auth and gateway admission.

It is intentionally not a full billing product.

What this proves

  • a vendor-specific credit or quota service can be built in-tree
  • the service can authenticate against Photon IAM
  • the service can participate in gateway and control-plane admission flows
  • the service can persist state in Photon-supported backends

Supported scope

  • quota checks
  • credit reservations, commits, and releases
  • tenant-aware auth integration
  • gateway-facing admission control hooks

Explicit non-goals

  • invoicing
  • tax handling
  • discounts and pricing catalogs
  • finance-grade ledger completeness
  • full metering platform ownership

Test expectation

The main proof should come from cluster-level VM validation in nix/test-cluster, not from expanding creditservice into a larger product surface.

Concrete proof path:

nix run ./nix/test-cluster#cluster -- fresh-smoke

That flow boots node06 with apigateway, nightlight, and creditservice, and validates that creditservice starts in the IAM-integrated cluster path.