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 11 API contracts indexed on the APIs.io network, including Items API, Rows API, and 9 more. Tagged areas include Visual Builder, Headless CMS, React, Next.js, and Gatsby.

The Plasmic catalog on APIs.io includes 1 Spectral governance ruleset.

Plasmic’s developer surface includes authentication, documentation, GitHub presence, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.1/100 emerging ▬ flat Agent 19/100 agent aware Heartbeat 69/100 alive self hosted · MIT Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreeSelf serve⚡ Free to try

1 published contract

Visual Builder Headless CMS React Next.jsGatsbyLow-Code Frontend

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 25.1/100 · emerging

Contract Quality 7.4 / 16

Developer Ergonomics 3.7 / 13

Access Clarity 0.6 / 13

Operational Transparency 0.8 / 8

Contract Governance 1.1 / 8

Discoverability 4.3 / 7

Regulatory Posture 0.9 / 15

Open Source Surface 2.5 / 10

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 19/100 · 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/plasmic/"><img src="https://apis.io/badge/plasmic/card.svg" alt="Plasmic on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →

10 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 4.3 — up to +19.1 composite points Ask about this →
Developer Ergonomics scores 28.6 — up to +14.3 composite points Ask about this →
Contract Quality scores 45.3 — up to +13.7 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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 the provider profile at artifacts.apis.io/plasmic/apis.yml: open an issue on github.com/api-evangelist/plasmic to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

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 3

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

Plasmic CMS Items API

OPEN COLLECTION

Plasmic CMS Items Rows API

OPEN COLLECTION

Plasmic CMS API

OPEN COLLECTION

Plasmic API pricing

Not yet checked against Plasmic's own pricing page. Compiled by API Evangelist on 2026-05-22; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Pro Tier Default: 120 requests per minute

Compiled by API Evangelist, not yet checked against Plasmic's documentation. Rate-limit details →

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

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Plasmic API Rules

49 rules · 47 error-severity 1 warn-severity 1 info-severity

SPECTRAL

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 (API Evangelist recommendations) 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 4

Status, limits, changes, and where to get help

RateLimits

IssueTracker

Forums

Slack

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

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
  gated: none
  gated_source:
  - onboarding
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  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: Plans
  url: plans/plasmic-plans-pricing.yml
- type: RateLimits
  url: rate-limits/plasmic-rate-limits.yml
- type: FinOps
  url: finops/plasmic-finops.yml
- 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

Plasmic API — frequently asked questions

Does Plasmic have an API?

Yes. APIs.io lists 11 APIs from Plasmic, including Plasmic Studio, Plasmic Loader (Headless API) and Plasmic Codegen API, and 8 more.

Is there an OpenAPI specification for the Plasmic API?

Yes. APIs.io indexes 2 OpenAPI specifications for Plasmic, each linked for download from this page.

How do I authenticate with the Plasmic API?

Plasmic uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Plasmic Authentication.

How much does the Plasmic API cost?

APIs.io lists 1 pricing plan for Plasmic, with each plan's price, limits and inclusions under Pricing on this page.

Is the Plasmic API ready for AI agents?

Plasmic has a Kin Score of 25.1 out of 100 (emerging) and an Agent Readiness score of 19.0 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/plasmic"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/plasmic/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/plasmic/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.