Kernel
Kernel is browser infrastructure for AI agents and web automations. Founded in 2025 by Catherine Jue (CEO) and Rafael Garcia (CTO) and backed by Accel and Y Combinator (S25), Kernel runs sandboxed Chromium browsers on a unikernel platform with sub-150ms cold starts, built-in stealth mode, residential proxies, CAPTCHA solving, session recording, live view, persistent profiles, and a serverless app platform that co-locates agent code with browsers. Kernel works with Playwright, Puppeteer, Browser Use, Stagehand, Magnitude, Notte, and the Anthropic/OpenAI/Gemini computer-use loops. The REST API at api.onkernel.com exposes browsers, browser pools, profiles, proxies, replays, extensions, computer controls, filesystem, processes, Playwright execution, managed auth, credentials, apps, deployments, invocations, and projects.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Kernel the way a machine reads it — 50 machine-readable artifacts across 1 API, 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 — Kernel scores 41.5/100 (developing), with a separate agent-readiness read of 28/100 (agent aware). 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. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Kernel
Each block below is one kind of artifact we hold for Kernel. 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 22
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.
Kernel MCP Server
Hosted Model Context Protocol server at mcp.onkernel.com that exposes Kernel resources (browsers, profiles, proxies, apps) as MCP tools and bundles four standalone tools — compu...
Kernel API Keys API
Create and manage API keys for organization and project-scoped access.
Kernel Apps API
List applications and versions.
Kernel Auth Connections API
The Auth Connections API from Kernel — 6 operation(s) for auth connections.
Kernel Browser Computer Controls API
Control mouse, keyboard, and screen on the browser instance.
Kernel Browser Filesystem API
Read, write, and manage files on the browser instance.
Kernel Browser Logs API
Stream logs from the browser instance.
Kernel Browser Playwright API
Execute Playwright code against the browser instance.
Kernel Browser Pools API
Create and manage browser pools for acquiring and releasing browsers.
Kernel Browser Processes API
Execute and manage processes on the browser instance.
Kernel Browser Replays API
Record and manage browser session video replays.
Kernel Browser Telemetry API
Stream live telemetry events from a browser session.
Kernel Browsers API
Create and manage browser sessions.
Kernel Credential Providers API
Configure external credential providers like 1Password.
Kernel Credentials API
Create and manage credentials for authentication.
Kernel Deployments API
Create and manage app deployments and stream deployment events.
Kernel Extensions API
Create, list, retrieve, and delete browser extensions.
Kernel Invocations API
Invoke actions and stream or query invocation status and events.
Kernel Managed Auth API
Create and manage auth connections for automated credential capture and login.
Kernel Profiles API
Create, list, retrieve, and delete browser profiles.
Kernel Projects API
Create and manage projects for resource isolation within an organization.
Kernel Proxies API
Create and manage proxy configurations for routing browser traffic.
Scroll within the panel for all 22 ·
Open Collections 23
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONKernel API Keys API
OPEN COLLECTIONKernel API Keys Apps API
OPEN COLLECTIONKernel API Keys Auth Connections API
OPEN COLLECTIONKernel API Keys Browser Computer Controls API
OPEN COLLECTIONKernel API Keys Browser Filesystem API
OPEN COLLECTIONKernel API Keys Browser Logs API
OPEN COLLECTIONKernel API Keys Browser Playwright API
OPEN COLLECTIONKernel API Keys Browser Pools API
OPEN COLLECTIONKernel API Keys Browser Processes API
OPEN COLLECTIONKernel API Keys Browser Replays API
OPEN COLLECTIONKernel API Keys Browser Telemetry API
OPEN COLLECTIONKernel API Keys Browsers API
OPEN COLLECTIONKernel API Keys Credential Providers API
OPEN COLLECTIONKernel API Keys Credentials API
OPEN COLLECTIONKernel API Keys Deployments API
OPEN COLLECTIONKernel API Keys Extensions API
OPEN COLLECTIONKernel API Keys Invocations API
OPEN COLLECTIONKernel API Keys Managed Auth API
OPEN COLLECTIONKernel API Keys Profiles API
OPEN COLLECTIONKernel API Keys Projects API
OPEN COLLECTIONKernel API Keys Proxies API
OPEN COLLECTIONKernel API
OPEN COLLECTIONScroll within the panel for all 23 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
Kernel MCP Server (source)
MCP SERVERSecurity 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.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Kernel — 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.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Build 10
SDKs, sample code, and the tooling you integrate with
Scroll within the panel for all 10 ·
Access & Security 3
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/kernel-so · machine-readable index on apis.io
This is an independent, third-party profile of Kernel, 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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