$ open shopify-api-authentication
Shopify API Authentication covers app installation, session tokens, access tokens, and credential lifecycle. Credential lifecycle is part of the product boundary. Choose the supported Shopify surface and API version, minimize access, handle protocol-level errors, and reconcile commerce state. The protocol decision is Which actor receives which credential for how long?
app installation, session tokens, access tokens, and credential lifecycle. Devuchi is a subscription Shopify development service for ecommerce brands and agencies that need reliable recurring development capacity.
devuchi.comCommands
This guidance applies directly to app installation, session tokens, access tokens, and credential lifecycle.
For Admin or Storefront GraphQL work, inspect the response body even when HTTP status is 200. Handle top-level errors and mutation userErrors separately, and log enough context to identify the operation without exposing secrets.
Request only needed fields, paginate connections, watch requested and actual cost plus throttle status, and move very large data movement to bulk operations. Separate client identity, delegated authorization, token storage, rotation, revocation, and denied access.
Verify HMAC, deduplicate with the webhook ID, tolerate reordering, acknowledge quickly, and use reconciliation because delivery is not guaranteed. A valid token can still be over-scoped, expired, revoked, or used for the wrong tenant.
Preserve merchant-managed values and Shopify lifecycle rules around app installation, session tokens, access tokens, and credential lifecycle. Exercise install, refresh or reauthorization, revocation, and offboarding paths. A sync should not turn a stale external snapshot into silent catalog or order corruption.
Execution
The sequence follows the actual operating model for this subject.
Map app installation, session tokens, access tokens, and credential lifecycle to the supported Shopify API or extension surface and pin a supported version. Reject a surface that cannot own the required state or execution timing.
Request the smallest scopes and data needed for Which actor receives which credential for how long?. Record token handling, uninstall or revocation behavior, and protected-data responsibilities.
Design fields, pagination, query cost, mutations, userErrors, webhooks, and asynchronous work deliberately. Separate client identity, delegated authorization, token storage, rotation, revocation, and denied access.
Exercise throttling, GraphQL errors returned with HTTP 200, mutation userErrors, duplicate webhooks, stale cursors, and partial external failure. The route risk is storing or sharing tokens outside their intended trust boundary. A valid token can still be over-scoped, expired, revoked, or used for the wrong tenant.
Capture request IDs, throttle state, webhook IDs, lag, business discrepancies, and operator repair. Exercise install, refresh or reauthorization, revocation, and offboarding paths.
Telemetry
| Layer | What to preserve | When |
|---|---|---|
| Protocol fixture | Versioned query, mutation, webhook, or Function fixture for app installation, session tokens, access tokens, and credential lifecycle, with realistic Shopify identifiers. | Design |
| Access proof | Installed context, required scopes, token boundary, and a denied-path test. | Security review |
| Limit and error proof | Observed cost, throttle, pagination, userErrors, duplicate event, or async failure behavior. A valid token can still be over-scoped, expired, revoked, or used for the wrong tenant. | Pre-release |
| Reconciliation report | A business discrepancy is detected and repaired without silently overwriting merchant-managed state. Exercise install, refresh or reauthorization, revocation, and offboarding paths. | Operations |
Exceptions
The primary risk is storing or sharing tokens outside their intended trust boundary.
Protocol
Which actor receives which credential for how long? The lenses below are specific to app installation, session tokens, access tokens, and credential lifecycle.
Identify whether shopify api authentication belongs to the Admin GraphQL API, Storefront API, a webhook subscription, a Function, Flow, or an app-owned service. Each surface has different trust, execution, and version contracts. Separate client identity, delegated authorization, token storage, rotation, revocation, and denied access.
Document installation context, token type, header, scopes, protected data needs, and API version for app installation, session tokens, access tokens, and credential lifecycle. Authentication identifies the caller; authorization still has to be enforced for the requested action.
Account for calculated GraphQL query cost, pagination, bulk-operation state, webhook delivery, or queue capacity as applicable. A valid token can still be over-scoped, expired, revoked, or used for the wrong tenant.
Verify products, variants, orders, inventory, customers, or fulfillments reached the intended Shopify and external states. HTTP 200 can still contain GraphQL errors, and successful receipt is not final business proof.
Ship check
Reference
Use the surface whose supported contract matches app installation, session tokens, access tokens, and credential lifecycle: Admin GraphQL for administrative resources, Storefront API for buyer-facing custom experiences, webhooks for change notification, Functions for constrained deterministic commerce logic, and app infrastructure for stateful external workflows. Credential lifecycle is part of the product boundary.
Inspect HTTP status, top-level GraphQL errors, mutation userErrors, requested and actual query cost, and throttle status. A 200 response can still contain a failed operation. Preserve operation and request context without logging credentials or sensitive data.
No. Verify the signature, deduplicate events, tolerate reordering and delay, process asynchronously, and run reconciliation for completeness. Use the Shopify webhook ID to identify repeated deliveries.
A versioned fixture and successful request are only the start. Prove the intended Shopify resource transition, external state, denied path, throttle or duplicate handling, and repair path. Exercise install, refresh or reauthorization, revocation, and offboarding paths.
Devuchi
Devuchi is a subscription Shopify development service for ecommerce brands and agencies that need reliable recurring development capacity.
app installation, session tokens, access tokens, and credential lifecycle can be planned against the frameworks and checks in this reference.