Builder.io

Builder.io is a visual development platform and headless CMS that enables teams to build, test, and optimize digital experiences without requiring constant developer involvement. The platform combines an AI-powered visual editor with a suite of APIs including REST Content, GraphQL, Write, Upload, Image, Assets, and Admin APIs for managing and delivering content at scale. Builder.io supports A/B testing, personalization, and targeting, making it suitable for marketing and product teams working across web and mobile channels. It integrates natively with React, Vue, Svelte, Qwik, Angular, and other frameworks through official SDKs, and connects to Git-based workflows via GitHub, GitLab, and Bitbucket.

Builder.io publishes 1 API on the APIs.io network: Content API. Tagged areas include Headless CMS, Visual Development, Content Delivery, A/B Testing, and GraphQL.

The Builder.io catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Builder.io’s developer surface includes authentication, documentation, engineering blog, pricing, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub

54.7/100 developing ▬ flat Agent 44/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreemiumSelf serveFree trial⚡ Free to try

6 APIs

Headless CMSVisual DevelopmentContent DeliveryA/B TestingGraphQLRESTPersonalizationPage Building

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 54.7/100 · developing

Contract Quality 17.9 / 25

Developer Ergonomics 4.3 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 6.8 / 13

Governance 8.3 / 12

Discoverability 7.4 / 10

Agent readiness — 44/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/builder-io: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

GraphQL 1

GraphQL schemas published by this provider.

Rate Limits 1

Documented rate limits and quota policies.

Builder Io Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 1

Standalone JSON Schema definitions for this provider's data models.

BuilderContentEntry

14 properties

JSON SCHEMA

Examples 1

Example request and response payloads for these APIs.

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLDContext

JSONLDContext

Vocabulary

Vocabulary

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

Plans

Plans

FinOps

FinOps

Company 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

BlogFeed

BlogFeed

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: builder-io
name: Builder.io
description: Builder.io is a visual development platform and headless CMS that enables teams to build, test, and optimize
  digital experiences without requiring constant developer involvement. The platform combines an AI-powered visual editor
  with a suite of APIs including REST Content, GraphQL, Write, Upload, Image, Assets, and Admin APIs for managing and delivering
  content at scale. Builder.io supports A/B testing, personalization, and targeting, making it suitable for marketing and
  product teams working across web and mobile channels. It integrates natively with React, Vue, Svelte, Qwik, Angular, and
  other frameworks through official SDKs, and connects to Git-based workflows via GitHub, GitLab, and Bitbucket.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: true
  try_now: true
  public: false
  label: Freemium (free trial) · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/builder-io.png
tags:
- Headless CMS
- Visual Development
- Content Delivery
- A/B Testing
- GraphQL
- REST
- Personalization
- Page Building
url: https://raw.githubusercontent.com/api-evangelist/builder-io/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
apis:
- aid: builder-io:content-api
  name: Builder.io Content API
  description: REST API for retrieving published content from Builder.io models. Supports filtering via MongoDB-style queries,
    targeting by user attributes, locale, and URL path. Returns paginated JSON results with support for enriched references
    and nested content symbols.
  humanURL: https://www.builder.io/c/docs/content-api
  baseURL: https://cdn.builder.io/api/v3/content
  tags:
  - Content Delivery
  - REST
  - Headless CMS
  properties:
  - type: Documentation
    url: https://www.builder.io/c/docs/content-api
  - type: OpenAPI
    url: openapi/builder-io-content-api-openapi.yml
- aid: builder-io:graphql-api
  name: Builder.io GraphQL Content API
  description: GraphQL API for querying Builder.io content models with type-safe schemas. Supports GET and POST requests,
    model-level queries with pagination, and targeting via user attributes. The interactive GraphQL Explorer is available
    for schema discovery and testing.
  humanURL: https://www.builder.io/c/docs/graphql-api
  baseURL: https://cdn.builder.io/api/v3/graphql
  tags:
  - GraphQL
  - Content Delivery
  - Headless CMS
  properties:
  - type: Documentation
    url: https://www.builder.io/c/docs/graphql-api
  - url: graphql/builder-io-graphql.md
    type: GraphQL
  - url: graphql/builder-io-schema.graphql
    type: GraphQLSchema
- aid: builder-io:admin-api
  name: Builder.io Admin GraphQL API
  description: Private GraphQL API for back-end servers and trusted integrations. Enables space management, user access control,
    SSO configuration (SAML/OIDC), webhook setup, model and folder management, and asset retrieval. Authenticated via Bearer
    token using a private space key.
  humanURL: https://www.builder.io/c/docs/admin-graphql-api
  baseURL: https://cdn.builder.io/api/v2/admin
  tags:
  - GraphQL
  - Admin
  - Management
  properties:
  - type: Documentation
    url: https://www.builder.io/c/docs/admin-graphql-api
- aid: builder-io:write-api
  name: Builder.io Write API
  description: API for programmatically creating, updating, and deleting content entries in Builder.io. Intended for server-side
    automation and content migration workflows that need to manage Builder models at scale.
  humanURL: https://www.builder.io/c/docs/api-intro
  baseURL: https://cdn.builder.io/api/v3
  tags:
  - Content Management
  - REST
  - Write
  properties:
  - type: Documentation
    url: https://www.builder.io/c/docs/api-intro
- aid: builder-io:upload-api
  name: Builder.io Upload API
  description: API for programmatically uploading files such as images and videos to Builder.io. Supports automation of asset
    ingestion pipelines and bulk media management workflows.
  humanURL: https://www.builder.io/c/docs/api-intro
  baseURL: https://cdn.builder.io/api/v3
  tags:
  - Upload
  - Assets
  - Media
  properties:
  - type: Documentation
    url: https://www.builder.io/c/docs/api-intro
- aid: builder-io:image-api
  name: Builder.io Image API
  description: API for accessing and downloading optimized versions of images uploaded to Builder.io. Supports on-the-fly
    image transformation and CDN-optimized delivery for web performance use cases.
  humanURL: https://www.builder.io/c/docs/api-intro
  baseURL: https://cdn.builder.io
  tags:
  - Images
  - Media
  - CDN
  properties:
  - type: Documentation
    url: https://www.builder.io/c/docs/api-intro
common:
- type: AgenticAccess
  url: agentic-access/builder-io-agentic-access.yml
- type: DomainSecurity
  url: security/builder-io-domain-security.yml
- type: Authentication
  url: authentication/builder-io-authentication.yml
- type: Website
  url: https://www.builder.io
- type: Documentation
  url: https://www.builder.io/c/docs/api-intro
- type: GitHubOrganization
  url: https://github.com/BuilderIO
- type: LinkedIn
  url: https://www.linkedin.com/company/builder-io
- type: X
  url: https://twitter.com/builderio
- type: Blog
  url: https://www.builder.io/blog
- type: Pricing
  url: https://www.builder.io/m/pricing
- type: StatusPage
  url: https://status.builder.io
- type: Plans
  url: plans/builder-io-plans-pricing.yml
- type: RateLimits
  url: rate-limits/builder-io-rate-limits.yml
- type: FinOps
  url: finops/builder-io-finops.yml
- type: BlogFeed
  url: blogs/blogs.json
- type: JSONLDContext
  url: json-ld/builder-io-context.jsonld
- type: Vocabulary
  url: vocabulary/builder-io-vocabulary.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com