Plasmic

Plasmic is a visual builder and headless CMS for front-end development. Designers and developers compose pages and components in Plasmic Studio, then ship them via either the Headless API (Loader) for runtime fetching or the Codegen pipeline for generated React/Next.js/Gatsby source. The platform also exposes a CMS for structured content, a CLI for code synchronization, and a REST API for programmatic access. Open source components live under the plasmicapp GitHub organization.

Plasmic publishes 2 APIs on the APIs.io network: Items API and Rows API. Tagged areas include Visual Builder, Headless CMS, React, Next.js, and Gatsby.

Plasmic’s developer surface includes authentication, documentation, GitHub presence, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

32.1/100 thin ▬ flat Agent 20/100 agent aware self hosted · MIT Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessFreeSelf serve⚡ Free to try

1 APIs

Visual Builder Headless CMS React Next.jsGatsbyLow-Code Frontend

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 32.1/100 · thin

Contract Quality 9.5 / 20

Developer Ergonomics 4.6 / 16

Access Clarity 4.6 / 16

Operational Transparency 2.7 / 10

Contract Governance 0.0 / 10

Discoverability 5.5 / 8

Open Source Surface 2.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 80 points between them, because the conditional facet above carries the other 20. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 80% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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/plasmic: 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 11

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

Plasmic Studio

Browser-based visual builder where designers and developers compose pages, components, and design systems. Outputs are consumed downstream by the Loader, Codegen, and CMS APIs.

Plasmic Loader (Headless API)

Runtime fetching API used by React, Next.js, and Gatsby integrations to pull Studio-published pages and components into a host app. Supports server-side rendering, incremental s...

Plasmic Codegen API

Generates React source code from a Plasmic project, synced into the host repository via the Plasmic CLI. Produces editable presentational components alongside skeleton wrappers ...

Plasmic CMS API

Headless content API for structured data managed inside Plasmic. Supports reading and writing rows in models defined in Studio, used to power data bindings inside Plasmic pages ...

Plasmic CLI

Command-line tool (plasmicapp/cli) for authenticating against Plasmic and syncing generated code into a repository. Commands include `plasmic auth`, `plasmic sync`, and `plasmic...

Plasmic React Integration

React loader and components for embedding Plasmic-built pages inside React apps.

Plasmic Next.js Integration

Next.js loader supporting both pages and app router. Used to render Plasmic-managed pages with SSR/SSG/ISR.

Plasmic Gatsby Integration

Gatsby plugin loader for embedding Plasmic-built pages inside Gatsby sites.

Plasmic MCP Server

Model Context Protocol server exposing Plasmic project context to AI agents and IDE assistants.

Plasmic Items API

Query and count items in a CMS model.

Plasmic Rows API

Create, update, publish, and delete CMS rows.

Scroll for all 11

Open Collections 4

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

API Collection

OPEN COLLECTION

Plasmic CMS Items API

OPEN COLLECTION

Plasmic CMS Items Rows API

OPEN COLLECTION

Plasmic CMS API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Plasmic Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Plasmic Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Plasmic Finops

FINOPS

Security Posture 2

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

Plasmic Authentication

apiKey · 1 scheme

SECURITY

Plasmic Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Plasmic Agentic Access

6 operations · 4 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

IssueTracker

IssueTracker

Forums

Forums

Slack

Slack

Commercial 1

Pricing, plans, and the legal terms of use

License

License

Company 4

The organization behind the API

Website

Website

LinkedIn

Twitter

Twitter

Blog

Blog

Source (apis.yml)

aid: plasmic
url: https://raw.githubusercontent.com/api-evangelist/plasmic/refs/heads/main/apis.yml
name: Plasmic
kind: company
description: Plasmic is a visual builder and headless CMS for front-end development. Designers and developers compose pages
  and components in Plasmic Studio, then ship them via either the Headless API (Loader) for runtime fetching or the Codegen
  pipeline for generated React/Next.js/Gatsby source. The platform also exposes a CMS for structured content, a CLI for code
  synchronization, and a REST API for programmatic access. Open source components live under the plasmicapp GitHub organization.
deliveryModel:
  model: self-hosted
  license: MIT
  open_source: true
  commercial: false
  callable_host: true
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/plasmic.png
tags:
- Visual Builder
- Headless CMS
- React
- Next.js
- Gatsby
- Low-Code
- Frontend
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.23'
apis:
- aid: plasmic:studio
  name: Plasmic Studio
  description: Browser-based visual builder where designers and developers compose pages, components, and design systems.
    Outputs are consumed downstream by the Loader, Codegen, and CMS APIs.
  humanURL: https://studio.plasmic.app/
  baseURL: https://studio.plasmic.app/
  tags:
  - Studio
  - Visual Editor
  properties:
  - type: Website
    url: https://studio.plasmic.app/
- aid: plasmic:loader
  name: Plasmic Loader (Headless API)
  description: Runtime fetching API used by React, Next.js, and Gatsby integrations to pull Studio-published pages and components
    into a host app. Supports server-side rendering, incremental static regeneration, and on-demand revalidation. Available
    via @plasmicapp/loader-react, @plasmicapp/loader-nextjs, and @plasmicapp/loader-gatsby.
  humanURL: https://docs.plasmic.app/learn/loader/
  baseURL: https://codegen.plasmic.app
  tags:
  - Headless
  - Loader
  - SSR
  properties:
  - type: Documentation
    url: https://docs.plasmic.app/learn/loader/
- aid: plasmic:codegen
  name: Plasmic Codegen API
  description: Generates React source code from a Plasmic project, synced into the host repository via the Plasmic CLI. Produces
    editable presentational components alongside skeleton wrappers for app code.
  humanURL: https://docs.plasmic.app/learn/codegen-guide/
  baseURL: https://codegen.plasmic.app
  tags:
  - Codegen
  - React
  properties:
  - type: Documentation
    url: https://docs.plasmic.app/learn/codegen-guide/
- aid: plasmic:cms
  name: Plasmic CMS API
  description: Headless content API for structured data managed inside Plasmic. Supports reading and writing rows in models
    defined in Studio, used to power data bindings inside Plasmic pages or external apps.
  humanURL: https://docs.plasmic.app/learn/plasmic-cms/
  baseURL: https://data.plasmic.app/api/v1/cms
  tags:
  - CMS
  - Headless Content
  properties:
  - type: Documentation
    url: https://docs.plasmic.app/learn/plasmic-cms/
- aid: plasmic:cli
  name: Plasmic CLI
  description: Command-line tool (plasmicapp/cli) for authenticating against Plasmic and syncing generated code into a repository.
    Commands include `plasmic auth`, `plasmic sync`, and `plasmic watch`.
  humanURL: https://www.npmjs.com/package/@plasmicapp/cli
  baseURL: https://github.com/plasmicapp/plasmic
  tags:
  - CLI
  - Tooling
  properties:
  - type: Repository
    url: https://github.com/plasmicapp/plasmic
- aid: plasmic:react
  name: Plasmic React Integration
  description: React loader and components for embedding Plasmic-built pages inside React apps.
  humanURL: https://docs.plasmic.app/learn/react-quickstart/
  baseURL: https://www.npmjs.com/package/@plasmicapp/loader-react
  tags:
  - React
  - Integration
  properties:
  - type: Documentation
    url: https://docs.plasmic.app/learn/react-quickstart/
- aid: plasmic:nextjs
  name: Plasmic Next.js Integration
  description: Next.js loader supporting both pages and app router. Used to render Plasmic-managed pages with SSR/SSG/ISR.
  humanURL: https://docs.plasmic.app/learn/nextjs-quickstart/
  baseURL: https://www.npmjs.com/package/@plasmicapp/loader-nextjs
  tags:
  - Next.js
  - Integration
  properties:
  - type: Documentation
    url: https://docs.plasmic.app/learn/nextjs-quickstart/
- aid: plasmic:gatsby
  name: Plasmic Gatsby Integration
  description: Gatsby plugin loader for embedding Plasmic-built pages inside Gatsby sites.
  humanURL: https://docs.plasmic.app/learn/gatsby-quickstart/
  baseURL: https://www.npmjs.com/package/@plasmicapp/loader-gatsby
  tags:
  - Gatsby
  - Integration
  properties:
  - type: Documentation
    url: https://docs.plasmic.app/learn/gatsby-quickstart/
- aid: plasmic:mcp
  name: Plasmic MCP Server
  description: Model Context Protocol server exposing Plasmic project context to AI agents and IDE assistants.
  humanURL: https://docs.plasmic.app/
  baseURL: https://github.com/plasmicapp/plasmic
  tags:
  - MCP
  - Artificial Intelligence
  tags_raw:
  - MCP
  - AI
  properties:
  - type: Repository
    url: https://github.com/plasmicapp/plasmic
- aid: plasmic:plasmic-items-api
  name: Plasmic Items API
  description: Query and count items in a CMS model.
  humanURL: https://studio.plasmic.app/
  baseURL: https://studio.plasmic.app/
  tags:
  - Item
  tags_raw:
  - Items
  properties:
  - type: OpenAPI
    url: openapi/plasmic-items-api-openapi.yml
- aid: plasmic:plasmic-rows-api
  name: Plasmic Rows API
  description: Create, update, publish, and delete CMS rows.
  humanURL: https://studio.plasmic.app/
  baseURL: https://studio.plasmic.app/
  tags:
  - Rows
  properties:
  - type: OpenAPI
    url: openapi/plasmic-rows-api-openapi.yml
common:
- type: IssueTracker
  url: https://github.com/plasmicapp/plasmic/issues
- type: ContributionGuide
  url: https://github.com/plasmicapp/plasmic/blob/master/CONTRIBUTING.md
- type: License
  name: MIT
  url: https://github.com/plasmicapp/plasmic/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/plasmic-agentic-access.yml
- type: DomainSecurity
  url: security/plasmic-domain-security.yml
- type: Authentication
  url: authentication/plasmic-authentication.yml
- type: Website
  url: https://www.plasmic.app/
- type: Documentation
  url: https://docs.plasmic.app/
- type: GitHub
  url: https://github.com/plasmicapp/plasmic
- type: Forums
  url: https://forum.plasmic.app/
- type: Slack
  url: https://plasmic.app/slack
- type: LinkedIn
  url: https://www.linkedin.com/company/plasmicapp
- type: Twitter
  url: https://twitter.com/plasmicapp
- url: https://www.plasmic.app/blog/feed.xml
  type: Blog
integrations:
- name: React
- name: Next.js
- name: Gatsby
- name: GitHub
- name: Vercel
- name: Netlify
- name: Contentful
- name: Sanity
- name: Shopify
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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