---
id: ADR-COM-CAT-021
title: Fixture Pricing Adapters and Conditional Runtime Wiring
product_area: commerce
module: catalog
revision: 1
status: proposed
design_intent: proposed
source_sha:
  services-commerce: c8b66a98e2490617aec38ba5c8165dd9bd0a8f9b
  react-console: baf6dae382d6f41dce976c7f848667ccc37e076f
decision: >-
  Membership and handler factories remain fixtures, while display eligibility selects real Platform transport
  only when its environment is configured.
constrains:
  - SVC-COM-CAT-pricing
  - WF-COM-CAT-009
  - WF-COM-CAT-010
  - WF-COM-CAT-011
  - RESP-COM
origin: COMM-M1 D1 (member prices set up and previewed; real qualification later); OQ-COM-CAT-007 (open)
alternatives:
  - option: Disable fixture-backed qualification and handlers until their owners are connected
    why_not: This remains the recommended product choice for binding work rather than an implemented refusal.
consequences:
  - Configurable member and handler settings can lack real deployed dependency behaviour.
  - Port adapters can be replaced without changing their calling pricing contracts.
supersedes: []
evidence:
  - >-
    services-commerce at c8b66a98: modules/pricing/services/checkout-pricing/price-checkout-with-engine.ts;
    aws/api/price-quotes.routes.ts; services/eligibility/commerce-eligibility-port.ts;
    aws/commerce.service-calls.ts.
  - >-
    services-commerce at c8b66a98: docs/milestones/COMM-M1-set-up-what-you-sell.md (Decisions);
    docs/milestones/plans/COMM-M1-plan.md.
---

# Fixture Pricing Adapters and Conditional Runtime Wiring

## Context

Pricing dependencies were introduced behind ports before all owner services were wired. A supported factory is different from evidence that a deployed environment uses it.

## Decision

Membership and handler factories remain fixtures, while display eligibility selects real Platform transport only when its environment is configured.

## Alternatives Considered

Disable fixture-backed qualification and handlers until their owners are connected. This remains the recommended product choice for binding work rather than an implemented refusal.

## Consequences

Configurable member and handler settings can lack real deployed dependency behaviour. Port adapters can be replaced without changing their calling pricing contracts.