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

30.8/100 thin ▬ flat Agent 17/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs

Headless Browser Browser Automation CDP WebSocket AI Agents Web Scraping

Kin Score

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

Composite quality — 30.8/100 · thin

Contract Quality 9.7 / 25

Developer Ergonomics 2.4 / 20

Access Clarity 5.8 / 20

Operational Transparency 4.4 / 13

Contract Governance 1.6 / 12

Discoverability 6.9 / 10

Agent readiness — 17/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

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

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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/lightpanda: 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 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 2

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

API Collection

OPEN COLLECTION

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

Website

Website

Blog

Blog

Source (apis.yml)

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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
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: '0.23'
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/_original/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
  - Agents
  tags_raw:
  - 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

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/lightpanda"

All providers

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

Every operation they expose

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

How their score was established

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

Discovery needs no key. Ratings and market analysis are Pro.

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.