Lightpanda website screenshot

Lightpanda

Lightpanda is an open-source headless browser built from scratch in Zig for AI agents and large-scale automation. It is not a REST API; its programmable interface is the Chrome DevTools Protocol (CDP) exposed over a WebSocket endpoint, making it a drop-in target for Puppeteer, Playwright, and chromedp clients. It ships as an open-source binary/CLI (AGPL-3.0) and as Lightpanda Cloud, a managed CDP browser service.

Lightpanda publishes 2 APIs on the APIs.io network: CDP WebSocket Interface and Cloud. Tagged areas include Headless Browser, Browser Automation, CDP, WebSocket, and AI Agents.

The Lightpanda catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Lightpanda’s developer surface includes documentation, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.7/100 thin ▼ -6.2 Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemium
3 APIs
Headless BrowserBrowser AutomationCDPWebSocketAI AgentsWeb Scraping

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 40.7/100 · thin
Contract Quality 13.6 / 25
Developer Ergonomics 2.2 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 4.8 / 13
Governance 7.0 / 12
Discoverability 7.4 / 10
Agent readiness — 25/100 · agent aware
Machine-Readable Contract 18 / 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 6 / 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/lightpanda: 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 3

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

Lightpanda CDP WebSocket Interface

Lightpanda's primary programmable interface. The browser runs as a CDP server (`lightpanda serve`) and exposes the Chrome DevTools Protocol over a WebSocket endpoint (default `w...

Lightpanda Cloud

Managed, hosted CDP browser endpoints reached over secure WebSocket (e.g. `wss://euwest.cloud.lightpanda.io/ws`, `wss://uswest.cloud.lightpanda.io/ws`). Authentication is a `tok...

Lightpanda CLI / Binary

The open-source command-line binary (AGPL-3.0, written in Zig). `lightpanda serve` starts the CDP-over-WebSocket server; `lightpanda fetch` retrieves and dumps a URL as HTML or ...

Open Collections 1

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

Lightpanda

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Lightpanda Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Lightpanda Rate Limits

3 limits

RATE LIMITS

FinOps 1

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

Lightpanda Finops

FINOPS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Lightpanda CDP over WebSocket

AsyncAPI 2.6 description of Lightpanda's programmable interface. Lightpanda is a headless browser; it does **not** expose a REST API. Its interface is the **Chrome DevTools Prot...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Lightpanda API Rules

6 rules · 5 warnings 1 info

SPECTRAL

Security Posture 1

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

Lightpanda Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: lightpanda
url: https://raw.githubusercontent.com/api-evangelist/lightpanda/refs/heads/main/apis.yml
name: Lightpanda
kind: company
description: Lightpanda is an open-source headless browser built from scratch in Zig for AI agents and large-scale automation.
  It is not a REST API; its programmable interface is the Chrome DevTools Protocol (CDP) exposed over a WebSocket endpoint,
  making it a drop-in target for Puppeteer, Playwright, and chromedp clients. It ships as an open-source binary/CLI (AGPL-3.0)
  and as Lightpanda Cloud, a managed CDP browser service.
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/lightpanda.png
tags:
- Headless Browser
- Browser Automation
- CDP
- WebSocket
- AI Agents
- Web Scraping
created: '2026-06-20'
modified: '2026-06-20'
specificationVersion: '0.19'
apis:
- aid: lightpanda:lightpanda-cdp-websocket-interface
  name: Lightpanda CDP WebSocket Interface
  tags:
  - CDP
  - WebSocket
  - Browser Automation
  - Puppeteer
  - Playwright
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://lightpanda.io/docs
  baseURL: ws://127.0.0.1:9222
  properties:
  - url: https://lightpanda.io/docs
    type: Documentation
  - url: https://github.com/lightpanda-io/browser
    type: GitHub
  - url: asyncapi/lightpanda-asyncapi.yml
    type: AsyncAPI
  - url: openapi/lightpanda-openapi.yml
    type: OpenAPI
  description: Lightpanda's primary programmable interface. The browser runs as a CDP server (`lightpanda serve`) and exposes
    the Chrome DevTools Protocol over a WebSocket endpoint (default `ws://127.0.0.1:9222`). CDP is a bidirectional JSON-RPC
    wire protocol over WebSocket - not a REST API. Existing Puppeteer, Playwright, and chromedp scripts connect by pointing
    `browserWSEndpoint` / `connectOverCDP` at this endpoint instead of Chrome.
- aid: lightpanda:lightpanda-cloud
  name: Lightpanda Cloud
  tags:
  - Cloud
  - Managed Browser
  - CDP
  - WebSocket
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://lightpanda.io/docs/cloud-offer/tools/cdp
  baseURL: wss://cloud.lightpanda.io/ws
  properties:
  - url: https://lightpanda.io/docs/cloud-offer/tools/cdp
    type: Documentation
  - url: https://lightpanda.io
    type: Website
  - url: asyncapi/lightpanda-asyncapi.yml
    type: AsyncAPI
  description: Managed, hosted CDP browser endpoints reached over secure WebSocket (e.g. `wss://euwest.cloud.lightpanda.io/ws`,
    `wss://uswest.cloud.lightpanda.io/ws`). Authentication is a `token` query-string parameter; query parameters such as `browser=lightpanda|chrome`
    and `proxy` select the browser engine and egress. Clients connect with the same Puppeteer/Playwright/chromedp CDP tooling.
    Cloud access is request-based; usage pricing is not publicly reconciled.
- aid: lightpanda:lightpanda-cli-binary
  name: Lightpanda CLI / Binary
  tags:
  - CLI
  - Binary
  - Fetch
  - Agent
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://github.com/lightpanda-io/browser
  baseURL: https://github.com/lightpanda-io/browser
  properties:
  - url: https://lightpanda.io/docs
    type: Documentation
  - url: https://github.com/lightpanda-io/browser
    type: GitHub
  description: The open-source command-line binary (AGPL-3.0, written in Zig). `lightpanda serve` starts the CDP-over-WebSocket
    server; `lightpanda fetch` retrieves and dumps a URL as HTML or markdown; `lightpanda agent` drives the browser with LLM
    instructions. Distributed via one-line installer, Docker images, and nightly Linux/macOS binaries.
common:
- type: DomainSecurity
  url: security/lightpanda-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/lightpanda-io
- type: LinkedIn
  url: https://www.linkedin.com/company/lightpanda
- type: Website
  url: https://lightpanda.io
- type: Documentation
  url: https://lightpanda.io/docs
- type: Plans
  url: plans/lightpanda-plans-pricing.yml
- type: RateLimits
  url: rate-limits/lightpanda-rate-limits.yml
- type: FinOps
  url: finops/lightpanda-finops.yml
- url: https://lightpanda.io/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com