Imported from jeremylongshore/tons-of-skills-marketplace (skills/.curated/shopify-cost-tuning/SKILL.md). Install upstream with npx skills add jeremylongshore/tons-of-skills-marketplace --skill shopify-cost-tuning. Copyright stays with the author (MIT).

Shopify Cost Tuning

Overview

Optimize Shopify app and API costs through plan analysis, API usage monitoring, and strategies to minimize billable API calls. Covers Shopify store plans, Partner app billing, and API efficiency.

Prerequisites

• Access to Shopify Partner Dashboard for app billing
• Understanding of current API usage patterns
• Knowledge of merchant's Shopify plan

Instructions

Step 1: Understand Shopify Plan Rate Limits

API rate limits are determined by the merchant's plan, not your app:

Key insight: Upgrading from Basic to Advanced doesn't help rate limits. Only Plus doubles them.

Step 2: App Billing API

If your app charges merchants, use the GraphQL appSubscriptionCreate mutation to create recurring charges. Set test: true in development to avoid real billing.

See App Billing API for the complete mutation and variable setup.

Step 3: Monitor API Usage

Track GraphQL query costs and REST call counts over time to identify optimization opportunities. Log extensions.cost.actualQueryCost from every GraphQL response.

See Usage Tracker Class for a complete tracking implementation with reporting.

Step 4: Cost Reduction Strategies

Four key strategies: replace REST with GraphQL for targeted field selection, use bulk operations for exports, cache responses and invalidate via webhooks, and use Storefront API for public data.

See Cost Reduction Strategies for code examples of each approach.

Output

• API usage monitored with cost tracking
• Rate limit-efficient query patterns
• App billing configured (if charging merchants)
• Cost reduction strategies applied

Error Handling

Examples

Quick Usage Check

// After every GraphQL call, log the cost
const response = await client.request(query);
const cost = response.extensions?.cost;
if (cost) {
  console.log(
    `Query cost: ${cost.actualQueryCost}/${cost.throttleStatus.maximumAvailable} ` +
    `(${cost.throttleStatus.currentlyAvailable} available)`
  );
}

Resources

• Shopify API Rate Limits
• App Billing API
• Shopify Pricing
• Shopify Plus Rate Limits