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.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles Arc (The Browser Company) the way a machine reads it — 11 machine-readable artifacts across 5 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Arc (The Browser Company) scores 18.0/100 (emerging), with a separate agent-readiness read of 3/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
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How we profile Arc (The Browser Company)
Each block below is one kind of artifact we hold for Arc (The Browser Company). For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 5
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Arc Browser Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Arc Browser Finops
FINOPSSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Arc (The Browser Company) — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Access & Security 3
Authentication, authorization, and security posture
Company 4
The organization behind the API
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/arc-browser · machine-readable index on apis.io
This is an independent, third-party profile of Arc (The Browser Company), published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.