webiny-sdk

name	webiny-sdk
context	webiny-extensions
description	Using @webiny/sdk to read and write CMS data from external applications. Use this skill when the developer is building a Next.js, Vue, Node.js, or any external app that needs to fetch or write content to Webiny, set up the SDK, use the Result pattern, list/get/create/update/publish entries, filter and sort queries, use TypeScript generics for type safety, work with the File Manager, list languages, trigger or monitor background tasks, or create API keys programmatically. Covers read vs preview mode, the `values` wrapper requirement, correct method names, and the `fields` required parameter, and background task management via `sdk.tasks`. Also covers common SDK errors and troubleshooting — especially "Content model '<modelName>' not found" (which usually means the API key lacks permission, not that the model is missing) and the Website Builder starter pitfall of reusing NEXT_PUBLIC_WEBSITE_BUILDER_API_KEY for Headless CMS reads (that key has no CMS permissions by default and needs either extension or replacement with a CMS-scoped key).

Webiny SDK

TL;DR

The @webiny/sdk package provides a TypeScript interface for external apps (Next.js, Vue, Node.js) to interact with Webiny's Headless CMS and File Manager. Every method returns a Result object (checked with isOk()). Supports listing, getting, creating, updating, publishing, and unpublishing entries with filtering, sorting, pagination, and TypeScript generics for type safety.

Installation & Setup

npm install @webiny/sdk

Initialize once and reuse:

// lib/webiny.ts
import { Webiny } from "@webiny/sdk";

export const webiny = new Webiny({
  token: process.env.WEBINY_API_TOKEN!,
  endpoint: process.env.WEBINY_API_ENDPOINT!,
  tenant: process.env.WEBINY_API_TENANT || "root"
});

• token -- API key token generated in Webiny Admin (Settings > API Keys)
• endpoint -- The base API URL, without a trailing slash. Run yarn webiny info in your Webiny project to find the API URL. For Website Builder projects use NEXT_PUBLIC_WEBSITE_BUILDER_API_HOST.
• tenant -- Tenant ID, defaults to "root"

IMPORTANT: Never add a trailing slash to endpoint. The SDK appends /graphql to the endpoint internally, so https://xxx.cloudfront.net/ will break all requests.

The fields Parameter (Required)

Every SDK method requires a fields array that specifies which fields to return. Omitting it will cause a runtime error.

• Use "values.<fieldId>" for content fields: "values.name", "values.price"
• Use top-level field names for metadata: "id", "entryId", "createdOn", "status"
• Use dot notation for nested fields: "values.author.name"

// Minimal fields -- just IDs
fields: ["id", "entryId"];

// Content fields
fields: ["id", "entryId", "values.name", "values.price", "values.description"];

// Nested reference fields
fields: ["id", "values.title", "values.author.name", "values.author.email"];

CMS: Read vs Preview Mode

webiny.cms.listEntries and webiny.cms.getEntry accept a preview parameter to control which revisions are returned:

preview	Returns	Use For
false (default)	Published entries only	Public-facing apps, SSG
true	Latest revision (draft or published)	Content preview, editorial tools

Write operations (createEntry, updateEntryRevision, etc.) are not affected by preview.

The Result Pattern

Every SDK method returns a Result object -- it never throws:

const result = await webiny.cms.listEntries({
  modelId: "product",
  fields: ["id", "values.name"]
});

if (result.isOk()) {
  console.log(result.value.data); // success -- typed data
} else {
  console.error(result.error.message); // failure -- error info
}

TypeScript Generics

Pass a type parameter for full type safety on values:

import type { CmsEntryData } from "@webiny/sdk";

interface Product {
  name: string;
  price: number;
  sku: string;
  description: string;
  category?: CmsEntryData<ProductCategory>;
}

interface ProductCategory {
  name: string;
  slug: string;
}

const result = await webiny.cms.listEntries<Product>({
  modelId: "product",
  fields: ["id", "entryId", "values.name", "values.price", "values.sku"]
});

if (result.isOk()) {
  // result.value.data is CmsEntryData<Product>[]
  const products = result.value.data;
  // products[0].values.name -- fully typed
}

Reference fields like category are typed as CmsEntryData<T>, which wraps referenced entries with id, entryId, and values.

Reading Data

List Entries

const result = await webiny.cms.listEntries<Product>({
  modelId: "product",
  fields: ["id", "entryId", "values.name", "values.price"],
  sort: { "values.name": "asc" },
  limit: 10
});

List with Filters

const result = await webiny.cms.listEntries<Product>({
  modelId: "product",
  fields: ["id", "entryId", "values.name", "values.price"],
  where: {
    "values.price_gte": 100,
    "values.name_contains": "Pro"
  },
  sort: { "values.price": "desc" }
});

Filter Operators

Operator	Description	Example
_eq	Equals (default)	"values.status": "active"
_not	Not equals	"values.status_not": "archived"
_contains	Contains substring	"values.name_contains": "Pro"
_startsWith	Starts with	"values.name_startsWith": "Web"
_gt / _gte	Greater than / >=	"values.price_gte": 100
_lt / _lte	Less than / <=	"values.price_lt": 500
_in	In array	"values.status_in": ["active", "featured"]

Sort Format

Sort is a Record<string, "asc" | "desc"> object:

sort: { "values.name": "asc" }     // alphabetical
sort: { "values.price": "desc" }   // highest price first
sort: { "values.createdOn": "desc" } // newest first

Get Single Entry

Use where with either id (revision ID) or entryId:

// By revision ID
const result = await webiny.cms.getEntry<Product>({
  modelId: "product",
  where: { id: "abc123#0001" },
  fields: ["id", "entryId", "values.name", "values.price"]
});

// By entry ID (gets latest published revision)
const result = await webiny.cms.getEntry<Product>({
  modelId: "product",
  where: { entryId: "abc123" },
  fields: ["id", "entryId", "values.name"]
});

Preview Mode (Drafts)

Pass preview: true to listEntries or getEntry to access unpublished/draft content:

const result = await webiny.cms.listEntries<Product>({
  modelId: "product",
  fields: ["id", "entryId", "values.name"],
  preview: true // returns drafts + published
});

Writing Data

CRITICAL: Content fields MUST be wrapped inside a values key in the data object. Passing fields directly (without values) will result in an empty or malformed entry.

Create an Entry

const result = await webiny.cms.createEntry({
  modelId: "contactSubmission",
  data: {
    values: {
      // ← REQUIRED: wrap all content fields in `values`
      name: "John Doe",
      email: "[e-mail]",
      message: "Hello from the contact form!"
    }
  },
  fields: ["id", "entryId"]
});

Update an Entry Revision

The method is updateEntryRevision, not updateEntry. Use revisionId (the full entryId#revisionNumber, e.g. "abc123#0001"):

const result = await webiny.cms.updateEntryRevision({
  modelId: "product",
  revisionId: "abc123#0001", // ← note: revisionId, not id
  data: {
    values: {
      // ← REQUIRED: wrap fields in `values`
      price: 29.99
    }
  },
  fields: ["id", "entryId", "values.price"]
});

Publish / Unpublish

The methods are publishEntryRevision and unpublishEntryRevision, not publishEntry/unpublishEntry. Both require revisionId and fields:

await webiny.cms.publishEntryRevision({
  modelId: "product",
  revisionId: "abc123#0001",
  fields: ["id", "entryId", "status"]
});

await webiny.cms.unpublishEntryRevision({
  modelId: "product",
  revisionId: "abc123#0001",
  fields: ["id", "entryId", "status"]
});

Delete an Entry Revision

await webiny.cms.deleteEntryRevision({
  modelId: "product",
  revisionId: "abc123#0001",
  fields: []
});

Languages

webiny.languages.listLanguages() returns all enabled languages — disabled languages are always filtered out server-side, so no filter parameter is needed.

import type { Language } from "@webiny/sdk";

const result = await webiny.languages.listLanguages();

if (result.isOk()) {
  const languages: Language[] = result.value;
  // languages[0].code, .name, .direction, .isDefault
}

The Language type:

interface Language {
  id: string;
  code: string; // e.g. "en-US"
  name: string; // e.g. "English (US)"
  direction?: "ltr" | "rtl";
  isDefault?: boolean;
}

File Manager

// List files
const files = await webiny.fileManager.listFiles({
  limit: 20,
  fields: ["id", "key", "name", "size", "type", "src"]
});

// Upload a file (returns presigned URL for direct S3 upload)
const uploaded = await webiny.fileManager.uploadFile({ file: myFile });

Creating API Keys via Code

For programmatic access, create API keys as an extension:

// extensions/MyApiKey.ts
import { ApiKeyFactory } from "webiny/api/security";

class MyApiKeyImpl implements ApiKeyFactory.Interface {
  execute(): ApiKeyFactory.Return {
    return [
      {
        name: "Universal API Key",
        slug: "universal-key",
        token: "wat_12345678",
        permissions: [{ name: "*" }]
      }
    ];
  }
}

export default ApiKeyFactory.createImplementation({
  implementation: MyApiKeyImpl,
  dependencies: []
});

Register (YOU MUST include the .ts file extension in the src prop — omitting it will cause a build failure):

<Api.Extension src={"/extensions/MyApiKey.ts"} />

Background Tasks

webiny.tasks wraps the Background Tasks GraphQL API. All methods return a Result and never throw.

List Task Definitions

Returns all registered task definitions — use this to discover valid definition IDs before triggering.

const result = await webiny.tasks.listDefinitions();

if (result.isOk()) {
  // result.value: TaskDefinition[]
  for (const def of result.value) {
    console.log(def.id, def.title, def.description);
  }
}

List Task Runs

const result = await webiny.tasks.listTasks();

if (result.isOk()) {
  // result.value: TaskRun[]
  for (const task of result.value) {
    console.log(task.id, task.taskStatus, task.definitionId);
  }
}

List Task Logs

Optionally filter by a specific task run ID:

// All logs
const result = await webiny.tasks.listLogs();

// Logs for a specific task run
const result = await webiny.tasks.listLogs({
  where: { task: "yourTaskRunId" }
});

if (result.isOk()) {
  for (const log of result.value) {
    for (const item of log.items) {
      console.log(`[${item.type}] ${item.message}`);
    }
  }
}

Trigger a Task

const result = await webiny.tasks.triggerTask({
  definition: "myTaskDefinitionId",
  input: {
    someVariable: "someValue",
    anotherVariable: 42
  }
});

if (result.isOk()) {
  const task = result.value; // TaskRun
  console.log(task.id, task.taskStatus, task.executionName);
}

Abort a Task

The task stops at its next safe checkpoint.

const result = await webiny.tasks.abortTask({
  id: "yourTaskRunId",
  message: "Stopped by user request" // optional
});

if (result.isOk()) {
  console.log(result.value.taskStatus); // "aborted"
}

Background Task Types

import type { TaskDefinition, TaskRun, TaskLog, TaskLogItem, TaskStatus } from "@webiny/sdk";

type TaskStatus = "pending" | "running" | "completed" | "failed" | "aborted" | "stopped";

interface TaskDefinition {
  id: string;
  title: string;
  description?: string;
}

interface TaskRun {
  id: string;
  definitionId: string;
  taskStatus: TaskStatus;
  input?: unknown;
  output?: unknown;
  startedOn?: string;
  finishedOn?: string;
  executionName?: string;
  iterations?: number;
  parentId?: string;
}

SDK Modules Reference

Module	Webiny App	What You Can Do
webiny.cms	Headless CMS	List, get, create, update, publish, unpublish, delete entry revisions
webiny.fileManager	File Manager	List, upload, and manage files and folders
webiny.tenantManager	Multi-tenancy	Create, install, enable, disable tenants
webiny.languages	Languages	List enabled languages (id, code, name, direction, isDefault)
webiny.tasks	Background Tasks	Trigger, abort, list task runs, definitions, and logs

Common Mistakes

Mistake	Correct
data: { name: "..." }	data: { values: { name: "..." } }
updateEntry(...)	updateEntryRevision(...)
publishEntry(...)	publishEntryRevision(...)
unpublishEntry(...)	unpublishEntryRevision(...)
sort: ["values.name_ASC"]	sort: { "values.name": "asc" }
getEntry({ id: "..." })	getEntry({ where: { id: "..." } })
Omitting fields	Always provide fields: [...]
Trailing slash in endpoint	Remove trailing slash from endpoint URL
triggerTask with unknown definition string	Use an ID returned by listDefinitions() — the GQL schema validates it against WebinyBackgroundTaskDefinitionEnum!

Quick Reference

Install:              npm install @webiny/sdk
Import:               import { Webiny } from "@webiny/sdk";
Type import:          import type { CmsEntryData, TaskRun } from "@webiny/sdk";
Initialize:           new Webiny({ token, endpoint, tenant })
Result check:         result.isOk() -> result.value / result.error.message
API endpoint:         yarn webiny info (in your Webiny project) -- NO trailing slash
Preview mode:         pass preview: true to listEntries / getEntry
fields required:      every CMS method needs a fields: string[] array
values wrapper:       createEntry/updateEntryRevision data must use { values: { ... } }
Background tasks:     webiny.tasks.triggerTask({ definition, input })
Abort task:           webiny.tasks.abortTask({ id, message? })
Filter logs by task:  webiny.tasks.listLogs({ where: { task: "id" } })

Troubleshooting

The SDK's error messages describe the server's view of the world, which sometimes hides the real cause. The patterns below have all bitten real projects — when you hit one of these errors, walk through the checklist before assuming the schema or framework is at fault.

"Content model '<modelName>' not found."

This error literally means the currently authenticated principal cannot see a model with that ID — not necessarily that the model is missing. There are three things to check, in order:

1. Does the model actually exist? Open Webiny Admin → Headless CMS → Models and confirm the modelId matches exactly (case-sensitive — productCategory, not ProductCategory or product-category).

2. Is the model published / not private? A model that's only created in code but not yet deployed (or that's defined as .private(...) instead of .public(...)) will not be visible via the public Read API.

3. Does the API key have permission to read this model? This is by far the most common cause when the model clearly exists. The CMS returns "not found" rather than "forbidden" on purpose, so an attacker can't probe the schema with an unauthorized key. Open Settings → API Keys → your key and verify it has at least:

   • Headless CMS access (cms.contentEntry, cms.contentModel, etc.)
   • The relevant model group selected (or "All groups")
   • For private models: the matching read permission scope

   Fix: grant the missing permission to the key, save, and retry. No code change needed.

Using the wrong API key (Website Builder key for Headless CMS reads)

The Website Builder starter ships with NEXT_PUBLIC_WEBSITE_BUILDER_API_KEY. That key exists for the WB editor itself and, by default, only has Website Builder permissions — it has no access to any Headless CMS models. Reusing it to power webiny.cms.listEntries(...) from a Server Component is the most common cause of "Content model not found" in WB projects, because to the CMS the request looks just like an unauthorized one.

You have two ways to fix this:

1. Recommended — use a separate, CMS-scoped API key. Generate a new key in Webiny Admin (Settings → API Keys) granting only the CMS permissions the public site needs (typically read on the relevant model groups), expose it as a different env var, and pass it into the SDK:

   # .env
   NEXT_PUBLIC_WEBSITE_BUILDER_API_KEY=...    # for the WB editor only
   WEBINY_CMS_READ_TOKEN=...                  # for SDK calls from Server Components
   

   // lib/webiny.ts
   import { Webiny } from "@webiny/sdk";
   
   export const webiny = new Webiny({
     token: process.env.WEBINY_CMS_READ_TOKEN!, // ← NOT the WB key
     endpoint: process.env.NEXT_PUBLIC_WEBSITE_BUILDER_API_HOST!,
     tenant: process.env.NEXT_PUBLIC_WEBSITE_BUILDER_API_TENANT || "root"
   });
   

   Keeping read and editor permissions on separate keys is also better for revocation and the principle of least privilege.

2. Less recommended — extend the existing WB key with CMS permissions. Open the WB API key in Settings → API Keys and add the required Headless CMS permissions to it. This works, but the same token now controls both the editor and public reads, which makes scoping and rotation harder later.

Heads-up: NEXT_PUBLIC_* env vars are inlined into the client bundle by Next.js. Anything you put behind that prefix is publicly visible. A read-only CMS token that's scoped to public content is fine to expose; an editor or write-capable token is not — for those, use a non-NEXT_PUBLIC_ env var and only read it from Server Components or Route Handlers.

Other quick-hit checks

• endpoint has a trailing slash. The SDK appends /graphql itself, so a trailing slash produces a malformed URL and every call fails. Strip it.
• tenant is wrong. In multi-tenant setups, the default "root" tenant won't see models defined under another tenant. Confirm the tenant ID matches the one that owns the model.
• Wrong endpoint host. WB projects sometimes have separate Admin and Read API hostnames. The SDK should always point at the Read API (the public CloudFront URL), not the Admin host.
• fields parameter omitted. This throws at request time with a different message, but if you see schema-level errors before any data comes back, double-check that every call passes a non-empty fields: [...].

Quick Reference

Install:          npm install @webiny/sdk
Import:           import { Webiny } from "@webiny/sdk";
Type import:      import type { CmsEntryData } from "@webiny/sdk";
Initialize:       new Webiny({ token, endpoint, tenant })
Result check:     result.isOk() -> result.value.data / result.error.message
API endpoint:     yarn webiny info (in your Webiny project) -- NO trailing slash
Preview mode:     pass preview: true to listEntries / getEntry
fields required:  every method needs a fields: string[] array
values wrapper:   createEntry/updateEntryRevision data must use { values: { ... } }

Related Skills

• webiny-api-cms-content-models -- Define the models you query with the SDK
• webiny-website-builder -- Use the SDK inside Website Builder components to fetch CMS data