# Zephyr Project

**Canonical:** https://apis.io/providers/zephyr/  
**Website:** https://www.zephyrproject.org/  
**APIs profiled:** 3

The Zephyr Project is a Linux Foundation project that delivers a small, scalable, secure, and open-source real-time operating system (RTOS) for resource-constrained embedded devices. Zephyr supports 1000+ boards across ARM Cortex, RISC-V, ARC, x86, Xtensa, and other architectures, ships with a C kernel, device drivers, networking stacks (BLE, Wi-Fi, Thread, Matter), security subsystems, and is supported by a meta-tool (west), an SDK (sdk-ng), and a broad ecosystem of training partners and commercial silicon and module vendors.

## Kin Score — 32.8 / 100 (thin)

Scored 2026-08-24 under rubric 0.13.0. Trend: flat (-0.2 from 33.0).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 10.7 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 28.9 |
| Developer Ergonomics | 54.8 |
| Commercial Clarity | 44.7 |
| Access Clarity | 44.7 |

## Agent readiness — 2.5 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (3)

- **Zephyr RTOS Kernel API** — The Zephyr kernel C API exposes scheduling, threading, synchronization, memory management, and timer services for real-time embedded applications. It is the foundation that devi...
- **Zephyr Device Driver API** — The Zephyr device driver subsystem exposes a uniform device model across GPIO, I2C, SPI, UART, ADC, sensors, displays, networking, USB, Bluetooth, and many other peripheral clas...
- **Zephyr Networking API** — The Zephyr networking stack exposes BSD-like sockets, TLS/DTLS, MQTT, CoAP, LWM2M, HTTP, WebSocket, gRPC, and connectivity layers including IPv4/IPv6, Wi-Fi, Thread, OpenThread,...

## Security (1)

- **Zephyr Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Zephyr Plans Pricing**

## Tags

Embedded, IoT, Linux Foundation, RTOS, Open-Source, Edge

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/zephyr/). Scores are computed from the provider's own public artifacts under a published rubric.