vtex-io-auth-tokens-and-context

Auth Tokens & Request Context

When this skill applies

Use this skill when the main decision is which VTEX IO identity should authenticate a backend request to VTEX services.

• Choosing between ctx.authToken, ctx.storeUserAuthToken, and ctx.adminUserAuthToken
• Deciding whether a VTEX client call should use AUTH_TOKEN, STORE_TOKEN, or ADMIN_TOKEN
• Reviewing storefront and Admin integrations that should respect the current user identity
• Replacing hardcoded appKey and appToken usage inside a VTEX IO app

Do not use this skill for:

• deciding which policies belong in manifest.json
• modeling route-level authorization or resource-based policies
• choosing between ExternalClient, JanusClient, and other client abstractions
• browser-side login or session UX flows
• validating route input or deciding what data may cross the app boundary

Decision rules

• Use this skill to decide which identity talks to VTEX endpoints, not what that identity is authorized to do.
• Use AUTH_TOKEN with ctx.authToken only for app-level operations that are not tied to a current shopper or Admin user.
• Use STORE_TOKEN with ctx.storeUserAuthToken whenever the action comes from storefront browsing or a shopper-triggered flow and the integration should respect shopper permissions.
• Use ADMIN_TOKEN with ctx.adminUserAuthToken whenever the action comes from an Admin interface and the integration should respect the logged-in Admin user's License Manager permissions.
• Prefer user tokens whenever they are available. The official guidance is to avoid app-token authentication when a store or Admin user token can represent the requester more accurately.
• If the corresponding user token is not present, fall back to AUTH_TOKEN only when the operation is truly app-scoped and does not depend on a current shopper or Admin identity.
• When using VTEX IO clients that accept authMethod, pass the token choice explicitly when the default app identity is not the right one for the request.
• When wrapping custom VTEX clients, propagate the matching auth token from IOContext at the client boundary instead of hardcoding credentials in handlers.
• Keep token choice aligned with the user journey: storefront flows should not silently escalate to app-level permissions, and Admin flows should not bypass the current Admin role context.
• ADMIN_TOKEN with ctx.adminUserAuthToken must remain server-side only and must never be exposed or proxied to browser clients.
• Treat token choice and policy design as separate concerns: this skill decides which identity is making the call, while auth-and-policies decides what that identity is allowed to do.
• Do not use appKey and appToken inside a VTEX IO app unless there is a documented exception outside the normal VTEX IO auth-token model.
• Never log raw tokens or return them in responses. Tokens are request secrets, and downstream callers should receive only business data.

Token selection at a glance:

Hard constraints

Constraint: User-driven requests must prefer user tokens over the app token

If a request is initiated by a current shopper or Admin user, the VTEX integration MUST use the corresponding user token instead of defaulting to the app token.

Why this matters

Using the app token for user-driven work widens permissions unnecessarily and disconnects the request from the real user context that should govern access.

Detection

If the code runs in a storefront or Admin request path and still uses ctx.authToken or implicit app-token behavior, STOP and verify whether ctx.storeUserAuthToken or ctx.adminUserAuthToken should be used instead.

Correct

export class OmsClient extends JanusClient {
  constructor(ctx: IOContext, options?:

Wrong

Constraint: App tokens must be reserved for app-level operations that are not tied to a user

Use ctx.authToken only when the request is genuinely app-scoped and no current shopper or Admin identity should govern the action.

Why this matters

The app token carries the permissions declared in the app manifest. Using it for user-triggered actions can bypass the narrower shopper or Admin permission model that the platform expects.

Detection

If a request originates from an Admin page, storefront interaction, or another user-facing workflow, STOP before using ctx.authToken and confirm that the action is truly app-level rather than user-scoped.

Correct

Wrong

This is wrong when the client is used from an Admin flow that should respect the logged-in user's role.

Constraint: VTEX IO apps must not hardcode VTEX API credentials when auth tokens are available

A VTEX IO app MUST use tokens from IOContext or authMethod instead of embedding appKey, appToken, or static VTEX credentials in source code or routine runtime configuration.

Why this matters

Hardcoded VTEX credentials are harder to rotate, easier to leak, and bypass the request-context model that VTEX IO clients already support.

Detection

If you see X-VTEX-API-AppKey, X-VTEX-API-AppToken, raw VTEX API credentials, or environment variables carrying permanent VTEX credentials inside a normal IO app integration, STOP and replace them with the correct auth-token flow unless there is a documented exception.

Correct

Wrong

Preferred pattern

Start from the requester context, choose the token identity that matches that requester, and keep the token propagation inside the client layer.

Minimal selection guide:

Pass the token explicitly when the client supports authMethod:

Or inject the matching token in a custom VTEX client:

Keep the decision close to the request boundary, then let downstream handlers and services depend on the correctly configured client rather than choosing tokens ad hoc in many places.

Common failure modes

• Defaulting every VTEX request to ctx.authToken, even when a shopper or Admin user initiated the action.
• Using ctx.authToken in Admin pages and accidentally bypassing the current Admin user's License Manager role context.
• Using ctx.authToken in storefront flows that should be limited by shopper permissions.
• Hardcoding appKey and appToken in an IO app instead of using auth tokens from IOContext.
• Choosing the right token in one client method but forgetting to apply the same identity consistently across related calls.
• Mixing token choice with policy modeling and treating them as the same decision.
• Logging ctx.authToken, ctx.storeUserAuthToken, or ctx.adminUserAuthToken in plain text, or forwarding raw tokens to downstream services that do not need them.

Review checklist

• Does each VTEX integration use the correct requester identity: shopper, Admin user, or app?
• Are ctx.storeUserAuthToken and ctx.adminUserAuthToken preferred when a user is actually driving the action?
• Is ctx.authToken used only for app-level operations that are not tied to a current user?
• Are hardcoded VTEX credentials absent from normal IO app integrations?
• Is token propagation centralized in the client layer or explicit authMethod usage rather than scattered across handlers?

Related skills

• vtex-io-auth-and-policies - Use when the main choice is which permissions and policies the chosen identity should carry

Reference

• App authentication using auth tokens - Official token model for AUTH_TOKEN, STORE_TOKEN, and ADMIN_TOKEN
• Using VTEX IO clients - Client usage patterns that complement token selection
• Policies - How app-token permissions relate to manifest-declared policies