Arc (The Browser Company)

Arc is a Chromium-based alternative web browser from The Browser Company, organized around Spaces, Profiles, Split View, Boosts (user-authored CSS/JS overlays), Easels, Notes, and Arc Search on mobile. Arc is primarily a consumer product without a broad public developer REST API. Developer surface area is limited to Developer Mode in the desktop browser, the underlying Chromium extension model, and user-created Boosts. The company has signalled that Arc's active product investment is winding down in favor of the successor product, Dia.

Arc (The Browser Company) publishes 5 APIs on the APIs.io network. Tagged areas include Browser, Consumer, Chromium, Boosts, and The Browser Company.

Arc (The Browser Company)’s developer surface includes engineering blog and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

18.0/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFree

5 APIs

Browser Consumer ChromiumBoostsThe Browser Company

Kin Score

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

Composite quality — 18.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 0.5 / 20

Access Clarity 7.4 / 20

Operational Transparency 2.7 / 13

Contract Governance 0.0 / 12

Discoverability 7.4 / 10

Agent readiness — 3/100 · human only

Machine-Readable Contract 0 / 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 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

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.

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APIs 5

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

Arc Browser (Desktop)

Desktop browser for macOS and Windows, organized around Spaces, Profiles, Tabs, Split View, and Themes. Built on Chromium.

Arc Search

Mobile-first AI-augmented search and browsing experience that builds "Browse for Me" summary pages from a query. iOS and Android.

Arc Boosts

User-authored CSS and JavaScript overlays that customize the look and behavior of any website inside Arc. Authored from inside the browser rather than via a public REST API; can...

Arc Chromium Extensions

Arc inherits the Chromium / Chrome Web Store extension model, so any Manifest V3 extension can be installed. There is no Arc-specific extension API beyond Chromium.

Arc Developer Mode

In-browser Developer Mode for engineers - exposes developer tools, extension management, and Portrait Mode for sharing in-progress work. Not a public API.

Pricing Plans 1

Published pricing tiers and plan structures.

Arc Browser Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Arc Browser Rate Limits

2 limits

RATE LIMITS

FinOps 1

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

Arc Browser Finops

FINOPS

Security Posture 3

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

Arc Browser Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Arc Browser Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Arc Browser Trust Center

SOC 2, ISO 27001

SECURITY

Resources

Access & Security 3

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Company 4

The organization behind the API

Website

Website

LinkedIn

Twitter

Twitter

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Company

Company

ResourceCenter

ResourceCenter

Source (apis.yml)

aid: arc-browser
url: https://raw.githubusercontent.com/api-evangelist/arc-browser/refs/heads/main/apis.yml
name: Arc (The Browser Company)
kind: company
description: Arc is a Chromium-based alternative web browser from The Browser Company, organized around Spaces, Profiles,
  Split View, Boosts (user-authored CSS/JS overlays), Easels, Notes, and Arc Search on mobile. Arc is primarily a consumer
  product without a broad public developer REST API. Developer surface area is limited to Developer Mode in the desktop browser,
  the underlying Chromium extension model, and user-created Boosts. The company has signalled that Arc's active product investment
  is winding down in favor of the successor product, Dia.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: free
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Free
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/arc-browser.png
tags:
- Browser
- Consumer
- Chromium
- Boosts
- The Browser Company
created: '2026-05-23'
modified: '2026-05-23'
specificationVersion: '0.23'
apis:
- aid: arc-browser:desktop
  name: Arc Browser (Desktop)
  description: Desktop browser for macOS and Windows, organized around Spaces, Profiles, Tabs, Split View, and Themes. Built
    on Chromium.
  humanURL: https://arc.net/
  baseURL: https://arc.net/
  tags:
  - Desktop
  - macOS
  - Windows
  properties:
  - type: Website
    url: https://arc.net/
- aid: arc-browser:search
  name: Arc Search
  description: Mobile-first AI-augmented search and browsing experience that builds "Browse for Me" summary pages from a query.
    iOS and Android.
  humanURL: https://arc.net/search
  baseURL: https://arc.net/search
  tags:
  - Mobile
  - Search
  - Artificial Intelligence
  tags_raw:
  - Mobile
  - Search
  - AI
  properties:
  - type: Website
    url: https://arc.net/search
- aid: arc-browser:boosts
  name: Arc Boosts
  description: User-authored CSS and JavaScript overlays that customize the look and behavior of any website inside Arc. Authored
    from inside the browser rather than via a public REST API; can be shared via Boost links.
  humanURL: https://arc.net/boosts
  baseURL: https://arc.net/boosts
  tags:
  - Customization
  - CSS
  - JavaScript
  properties:
  - type: Website
    url: https://arc.net/boosts
- aid: arc-browser:extensions
  name: Arc Chromium Extensions
  description: Arc inherits the Chromium / Chrome Web Store extension model, so any Manifest V3 extension can be installed.
    There is no Arc-specific extension API beyond Chromium.
  humanURL: https://chromewebstore.google.com/
  baseURL: https://chromewebstore.google.com/
  tags:
  - Extensions
  - Chromium
  properties:
  - type: Website
    url: https://chromewebstore.google.com/
- aid: arc-browser:developer-mode
  name: Arc Developer Mode
  description: In-browser Developer Mode for engineers - exposes developer tools, extension management, and Portrait Mode
    for sharing in-progress work. Not a public API.
  humanURL: https://resources.arc.net/
  baseURL: https://resources.arc.net/
  tags:
  - Developer Tools
  properties:
  - type: Website
    url: https://resources.arc.net/
common:
- type: TrustCenter
  url: security/arc-browser-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/arc-browser-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/arc-browser-domain-security.yml
- type: Website
  url: https://arc.net/
- type: Company
  url: https://thebrowser.company/
- type: ResourceCenter
  url: https://resources.arc.net/
- type: LinkedIn
  url: https://www.linkedin.com/company/the-browser-company
- type: Twitter
  url: https://twitter.com/browsercompany
- type: Blog
  url: https://arc.net/blog
integrations:
- name: Chromium Extensions
- name: Notion
- name: Linear
- name: GitHub
- name: Figma
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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