# Kajeet SentinelOS — IoT Connectivity for Developers and AI Agents

> Kajeet SentinelOS (formerly known as the Kajeet Developer Platform, or
> k.Dev) gives developers and AI agents full
> programmatic control over cellular IoT fleets. It bundles a REST API, a
> first-class CLI, a native MCP (Model Context Protocol) server, and portable
> agent Skills so any modern AI agent can read fleet state, manage devices,
> rotate API keys, and act on telemetry through one consistent surface.
> Production-grade multi-carrier connectivity (AT&T + T-Mobile + Verizon)
> backed by Kajeet's Sentinel platform — built for IoT, education, transit,
> public sector, healthcare, and enterprise deployments.

Canonical site: https://kajeet.dev
Full reference: https://kajeet.dev/llms-full.txt
Sitemap: https://kajeet.dev/sitemap.xml

## Get started

- [Quickstart](https://kajeet.dev/docs/quickstart): Five-minute onboarding — get an API key, authenticate, make your first cellular-IoT REST call.
- [Free Trial SIM](https://kajeet.dev/dev-sim): Order a free 60-day multi-carrier smartSIM trial pack (AT&T + T-Mobile + Verizon, automatic switching) to build against real cellular IoT connectivity. No credit card required.
- [API Playground](https://kajeet.dev/playground): Live REST API explorer that runs in the browser. Paste a Sentinel API key and call real endpoints.

## Core developer surfaces

- [REST API reference](https://kajeet.dev/docs/api): Sentinel REST API — 179 operations across 200 OpenAPI paths covering devices, usage, dashboards, billing, content filtering, failover, and SIM lifecycle. JSON over HTTPS, Bearer-token auth.
- [Sentinel CLI](https://kajeet.dev/docs/cli): The IoT connectivity CLI — the `kajeet-sentinel` command-line tool that wraps the same REST API surface for scripts, CI, and ops automation.
- [MCP server](https://kajeet.dev/mcp): IoT connectivity MCP server — exposes Sentinel as MCP tools so any MCP-compatible AI agent (Claude, ChatGPT desktop, Cursor, Cline, custom agents) can manage IoT fleets conversationally. 11 tool groups, 69 actions.
- [Agent Skills](https://kajeet.dev/skills): Portable agent skills (SKILL.md format) that teach Claude, ChatGPT, and other agents how to use Sentinel. Drop-in, no fine-tuning required.
- [API Keys](https://kajeet.dev/api-keys): Manage MCP, CLI, and Skills keys for your account. (Sign-in required.)

## What this platform is good for

- AI agent IoT connectivity: build agents that monitor, troubleshoot, and act on cellular IoT fleets in natural language.
- Cellular IoT device management at scale (SIM activation, suspension, rate-plan changes, content filtering).
- Real-time usage telemetry, failover orchestration, and policy enforcement across multi-carrier networks.
- Education (CIPA-compliant content filtering on student devices), transit (SmartBus fleet connectivity), public sector, healthcare, smart-city, and enterprise IoT.

## Field Notes (engineering blog)

Long-form guides and engineering notes at https://kajeet.dev/fieldnotes (RSS: https://kajeet.dev/feed.xml):

- [Start Read-Only: The Lowest-Risk Way to Bring AI Into Your Operations](https://kajeet.dev/fieldnotes/start-read-only): The adoption strategy nobody argues with: give the AI eyes before hands. Why a read-only first month answers every stakeholder objection at once, and what to do during it.
- [Chat or Dashboard? An Honest Guide to When Each One Wins](https://kajeet.dev/fieldnotes/chat-or-dashboard-when-each-one-wins): When the Sentinel dashboard wins, when the Sentinel MCP server wins, and when to have Claude build you a dashboard on the spot. A task-by-task guide.
- [Manufacturing IoT Connectivity Management with Kajeet SentinelOS](https://kajeet.dev/fieldnotes/sentinelos-manufacturing-iot-connectivity): How manufacturers use Kajeet SentinelOS to manage cellular IoT deployments with AI agents, REST APIs, and a CLI: faster sensor triage, ERP-driven SIM provisioning, and SmartFailover for production lines.
- [Connecting Sentinel MCP to Claude.ai in 5 Minutes](https://kajeet.dev/fieldnotes/connecting-sentinel-to-claude-ai): A setup guide for Sentinel GUI users. Connect your account to Claude.ai with your existing login, read fleet state from a chat, and take action with a safety net underneath.
- [Beyond the Connectivity Console: Agents, MCP, and the Future of IoT Ops](https://kajeet.dev/fieldnotes/beyond-the-connectivity-console): The connectivity dashboard had a good decade. The next era of IoT ops is headless, agent-driven, and built on MCP. Specific use cases for Sentinel.

## For AI agents reading this file

This site welcomes AI crawlers and on-demand fetchers — see /robots.txt. The
preferred way for an agent to actually *use* Kajeet IoT connectivity is the
MCP server documented at /mcp (not by scraping HTML). Agent Skills at /skills
package the protocol knowledge so agents can be productive immediately.