StackBlitz

StackBlitz is an online development environment that runs Node.js applications entirely in the browser using WebContainers, a WebAssembly-based operating system that boots Node.js in milliseconds without a remote server. It serves developers, technical writers, and platform teams who need interactive coding environments, documentation playgrounds, or embedded IDE experiences. The platform provides a JavaScript SDK for programmatically creating and embedding projects, and a WebContainer API for booting full Node.js runtimes directly inside web applications. StackBlitz also offers Codeflow, a one-click GitHub integration for pull request review and issue fixing workflows.

StackBlitz publishes 2 APIs on the APIs.io network. Tagged areas include Developer Tools, WebAssembly, Node.js, IDE, and Browser Runtime.

The StackBlitz catalog on APIs.io includes 1 JSON-LD context.

StackBlitz’s developer surface includes documentation, engineering blog, pricing, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

26.8/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1

AccessPaid

2 APIs

Developer ToolsWebAssemblyNode.jsIDEBrowser RuntimeCode Environments

Kin Score

Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1

Composite quality — 26.8/100 · emerging

Contract Quality 3.2 / 25

Developer Ergonomics 2.2 / 20

Commercial Clarity 10.0 / 20

Operational Transparency 5.5 / 13

Governance 0.0 / 12

Discoverability 5.9 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

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/stackblitz: 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 2

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

Rate Limits 1

Documented rate limits and quota policies.

Stackblitz Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

WebContainersDocumentation

WebContainersDocumentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

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 3

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

aid: stackblitz
name: StackBlitz
description: StackBlitz is an online development environment that runs Node.js applications entirely in the browser using
  WebContainers, a WebAssembly-based operating system that boots Node.js in milliseconds without a remote server. It serves
  developers, technical writers, and platform teams who need interactive coding environments, documentation playgrounds, or
  embedded IDE experiences. The platform provides a JavaScript SDK for programmatically creating and embedding projects, and
  a WebContainer API for booting full Node.js runtimes directly inside web applications. StackBlitz also offers Codeflow,
  a one-click GitHub integration for pull request review and issue fixing workflows.
type: Index
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/stackblitz.png
tags:
- Developer Tools
- WebAssembly
- Node.js
- IDE
- Browser Runtime
- Code Environments
url: https://raw.githubusercontent.com/api-evangelist/stackblitz/refs/heads/main/apis.yml
created: '2026-06-12'
modified: '2026-06-12'
specificationVersion: '0.19'
apis:
- aid: stackblitz:javascript-sdk
  name: StackBlitz JavaScript SDK
  description: A lightweight (3kB gzipped) JavaScript SDK that lets developers programmatically create, open, and embed StackBlitz
    projects in web pages, documentation sites, or blog posts. Provides six primary methods including openProject, embedProject,
    openGithubProject, embedGithubProject, openProjectId, and embedProjectId, along with a VM interface for controlling embedded
    environments post-mount.
  humanURL: https://developer.stackblitz.com/platform/api/javascript-sdk
  tags:
  - JavaScript
  - SDK
  - Embed
  - IDE
  properties:
  - type: Documentation
    url: https://developer.stackblitz.com/platform/api/javascript-sdk
  - type: SDKOptions
    url: https://developer.stackblitz.com/platform/api/javascript-sdk-options
  - type: VMInterface
    url: https://developer.stackblitz.com/platform/api/javascript-sdk-vm
- aid: stackblitz:webcontainer-api
  name: WebContainer API
  description: A browser-based runtime API that executes Node.js applications and operating system commands directly inside
    a browser tab using WebAssembly. Provides classes and methods for booting a container instance, mounting file systems,
    spawning processes, managing files, and handling OAuth authentication. Supports npm, pnpm, and yarn natively and emits
    events for port bindings and server-ready states. Commercial use in production for-profit applications requires a license.
  humanURL: https://webcontainers.io/api
  baseURL: https://webcontainers.io
  tags:
  - WebContainers
  - Node.js
  - Browser Runtime
  - WebAssembly
  properties:
  - type: Documentation
    url: https://webcontainers.io/api
  - type: GettingStarted
    url: https://webcontainers.io/guides/quickstart
common:
- type: DomainSecurity
  url: security/stackblitz-domain-security.yml
- type: Website
  url: https://stackblitz.com
- type: Documentation
  url: https://developer.stackblitz.com
- type: WebContainersDocumentation
  url: https://webcontainers.io
- type: GitHubOrganization
  url: https://github.com/stackblitz
- type: LinkedIn
  url: https://www.linkedin.com/company/stackblitz
- type: Blog
  url: https://blog.stackblitz.com
- type: Pricing
  url: https://stackblitz.com/pricing
- type: StatusPage
  url: https://status.stackblitz.com
- type: X
  url: https://x.com/stackblitz
- type: Plans
  url: plans/stackblitz-plans-pricing.yml
- type: RateLimits
  url: rate-limits/stackblitz-rate-limits.yml
- type: FinOps
  url: finops/stackblitz-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

StackBlitz

Kin Score

APIs 2

StackBlitz JavaScript SDK

WebContainer API

Pricing Plans 1

Stackblitz Plans Pricing

Rate Limits 1

Stackblitz Rate Limits

FinOps 1

Stackblitz Finops

Semantic Vocabularies 1

Stackblitz Context

Security Posture 1

Stackblitz Domain Security

Resources