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

48.4/100 developing ▬ flat Agent 35/100 agent ready saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serveFree trial⚡ Free to try

6 APIs

Headless CMS Visual Development Content Delivery A/B Testing GraphQL REST PersonalizationPage Building

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 48.4/100 · developing

Contract Quality 16.7 / 25

Developer Ergonomics 4.8 / 20

Access Clarity 10.0 / 20

Operational Transparency 6.5 / 13

Contract Governance 3.0 / 12

Discoverability 7.4 / 10

Agent readiness — 35/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. 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. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 6

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

Builder.io Content API

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 pagin...

Builder.io GraphQL Content API

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...

Builder.io Admin GraphQL API

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 ...

Builder.io Write API

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.io Upload API

API for programmatically uploading files such as images and videos to Builder.io. Supports automation of asset ingestion pipelines and bulk media management workflows.

Builder.io Image API

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 us...

Open Collections 2

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Builder.io Content API

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

Builder.io GraphQL API

Builder.io exposes a public GraphQL Content API that enables type-safe queries against your Builder.io space's content models. The API is schema-driven: every content model defi...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Builder Io Plans Pricing

4 plans

PLANS

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.

Builder Io Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Builder Io Context

3 classes · 24 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Builder.io API Rules

5 rules · 3 warnings 2 info

SPECTRAL

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.

Builder Io Get Content Example

3 fields

EXAMPLE

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Builder Io Authentication

apiKey · 1 scheme

SECURITY

Builder Io Domain Security

TLSv1.3 · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Builder Io Agentic Access

2 operations

2 operations · 0 acting

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
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
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: '0.23'
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
  tags_raw:
  - 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:
  - Image
  - Media
  - CDN
  tags_raw:
  - 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

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