Shopify Developer Reference

Overview

This public intake copy packages

packages/skills-catalog/skills/(development)/shopify-developer

https://github.com/tech-leads-club/agent-skills

Use it when the operator needs the upstream workflow, support files, and repository context to stay intact while the public validator and private enhancer continue their normal downstream flow.

This intake keeps the copied upstream files intact and uses

metadata.json

ORIGIN.md

Shopify Developer Reference Comprehensive reference for professional Shopify development - API version 2026-01.

Imported source sections that did not map cleanly to the public headings are still preserved below or in the support files. Notable imported sections: Choose Your Path, Deprecation Notices, Liquid Essentials, API Essentials.

When to Use This Skill

Use this section as the trigger filter. It should make the activation boundary explicit before the operator loads files, runs commands, or opens a pull request.

• Use when the request clearly matches the imported source intent: Complete Shopify development reference covering Liquid templating, OS 2.0 themes, GraphQL APIs, Hydrogen, Functions, and performance optimization (API v2026-01). Use when working with .liquid files, building Shopify....
• Use when the operator should preserve upstream workflow detail instead of rewriting the process from scratch.
• Use when provenance needs to stay visible in the answer, PR, or review packet.
• Use when copied upstream references, examples, or scripts materially improve the answer.
• Use when the workflow should remain reviewable in the public intake repo before the private enhancer takes over.

Operating Table

metadata.json

ORIGIN.md

references/api-admin.md

references/api-storefront.md

## Related Skills

Workflow

This workflow is intentionally editorial and operational at the same time. It keeps the imported source useful to the operator while still satisfying the public intake standards that feed the downstream enhancer flow.

1. Confirm the user goal, the scope of the imported workflow, and whether this skill is still the right router for the task.
2. Read the overview and provenance files before loading any copied upstream support files.
3. Load only the references, examples, prompts, or scripts that materially change the outcome for the current request.
4. Execute the upstream workflow while keeping provenance and source boundaries explicit in the working notes.
5. Validate the result against the upstream expectations and the evidence you can point to in the copied files.
6. Escalate or hand off to a related skill when the work moves out of this imported workflow's center of gravity.
7. Before merge or closure, record what was used, what changed, and what the reviewer still needs to verify.

Imported Workflow Notes

Imported: Choose Your Path

Read the reference file(s) that match your task:

Liquid templating - writing or debugging

.liquid

• references/liquid-syntax.md - Tags, control flow, iteration, whitespace, LiquidDoc
• references/liquid-filters.md - All filter categories with examples
• references/liquid-objects.md - Product, collection, cart, customer, and global objects

Theme development - building or customising themes:

• references/theme-development.md - OS 2.0 architecture, sections, blocks, JSON templates, settings schema

API integration - fetching or modifying data programmatically:

• references/api-admin.md - GraphQL Admin API (primary), REST (legacy), OAuth, webhooks, rate limiting
• references/api-storefront.md - Storefront API, Ajax API, cart operations

App development - building Shopify apps:

• references/app-development.md - Shopify CLI, extensions, Polaris Web Components, App Bridge

Serverless logic - custom business rules:

• references/functions.md - Shopify Functions (replacing Scripts), Rust/JS targets, deployment

Headless commerce - custom storefronts:

• references/hydrogen.md - Hydrogen framework, React Router 7, Storefront API integration

Optimisation and troubleshooting:

• references/performance.md - Images, JS, CSS, fonts, Liquid, Core Web Vitals
• references/debugging.md - Liquid errors, API errors, cart issues, webhook failures

Examples

Example 1: Ask for the upstream workflow directly

Use @shopify-developer to handle <task>. Start from the copied upstream workflow, load only the files that change the outcome, and keep provenance visible in the answer.

Explanation: This is the safest starting point when the operator needs the imported workflow, but not the entire repository.

Example 2: Ask for a provenance-grounded review

Review @shopify-developer against metadata.json and ORIGIN.md, then explain which copied upstream files you would load first and why.

Explanation: Use this before review or troubleshooting when you need a precise, auditable explanation of origin and file selection.

Example 3: Narrow the copied support files before execution

Use @shopify-developer for <task>. Load only the copied references, examples, or scripts that change the outcome, and name the files explicitly before proceeding.

Explanation: This keeps the skill aligned with progressive disclosure instead of loading the whole copied package by default.

Example 4: Build a reviewer packet

Review @shopify-developer using the copied upstream files plus provenance, then summarize any gaps before merge.

Explanation: This is useful when the PR is waiting for human review and you want a repeatable audit packet.

Best Practices

Treat the generated public skill as a reviewable packaging layer around the upstream repository. The goal is to keep provenance explicit and load only the copied source material that materially improves execution.

• Keep the imported skill grounded in the upstream repository; do not invent steps that the source material cannot support.
• Prefer the smallest useful set of support files so the workflow stays auditable and fast to review.
• Keep provenance, source commit, and imported file paths visible in notes and PR descriptions.
• Point directly at the copied upstream files that justify the workflow instead of relying on generic review boilerplate.
• Treat generated examples as scaffolding; adapt them to the concrete task before execution.
• Route to a stronger native skill when architecture, debugging, design, or security concerns become dominant.

Troubleshooting

Problem: The operator skipped the imported context and answered too generically

Symptoms: The result ignores the upstream workflow in

packages/skills-catalog/skills/(development)/shopify-developer

metadata.json

ORIGIN.md

Problem: The imported workflow feels incomplete during review

Symptoms: Reviewers can see the generated

SKILL.md

Problem: The task drifted into a different specialization

Symptoms: The imported skill starts in the right place, but the work turns into debugging, architecture, design, security, or release orchestration that a native skill handles better. Solution: Use the related skills section to hand off deliberately. Keep the imported provenance visible so the next skill inherits the right context instead of starting blind.

Related Skills

• @accessibility

  - Use when the work is better handled by that native specialization after this imported skill establishes context.

• @ai-cold-outreach

  - Use when the work is better handled by that native specialization after this imported skill establishes context.

• @ai-pricing

  - Use when the work is better handled by that native specialization after this imported skill establishes context.

• @ai-sdr

  - Use when the work is better handled by that native specialization after this imported skill establishes context.

Additional Resources

Use this support matrix and the linked files below as the operator packet for this imported skill. They should reflect real copied source material, not generic scaffolding.

references

references/api-admin.md

examples

examples/n/a

scripts

scripts/n/a

agents

agents/n/a

assets

assets/n/a

• api-admin.md
• api-storefront.md
• app-development.md
• debugging.md
• api-admin.md
• api-storefront.md

Imported Reference Notes

Imported: Quick Reference

2026-01

POST https://{store}.myshopify.com/admin/api/2026-01/graphql.json

POST https://{store}.myshopify.com/api/2026-01/graphql.json

/cart.js

/cart/add.js

/cart/change.js

npm install -g @shopify/cli

shopify theme dev --store {store}.myshopify.com

shopify app dev

shopify app deploy

Imported: Reference Files

Imported: Deprecation Notices

Imported: Liquid Essentials

Three syntax types:

{{ product.title | upcase }}                    {# Output with filter #}
{% if product.available %}In stock{% endif %}   {# Logic tag #}
{% assign sale = product.price | times: 0.8 %}  {# Assignment #}
{%- if condition -%}Stripped whitespace{%- endif -%}

Key patterns:

{% for product in collection.products limit: 5 %}
  {% render 'product-card', product: product %}
{% endfor %}

{% paginate collection.products by 12 %}
  {% for product in paginate.collection.products %}...{% endfor %}
  {{ paginate | default_pagination }}
{% endpaginate %}

Imported: API Essentials

// GraphQL Admin - always use GraphQL over REST
const response = await fetch(`https://${store}.myshopify.com/admin/api/2026-01/graphql.json`, {
  method: 'POST',
  headers: {
    'X-Shopify-Access-Token': accessToken,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({ query, variables }),
})
const { data, errors } = await response.json()
if (errors) throw new Error(errors[0].message)

// Ajax API (theme-only cart operations)
fetch('/cart/add.js', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({ id: variantId, quantity: 1 }),
})