smpclient
Simple Management Protocol (SMP) Client for remotely managing MCU firmware
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has no known vulnerabilities, low install friction, and fills a clear niche for Python developers needing to manage MCU devices via SMP. The permissive Apache-2.0 license poses no restrictions. Install with smpclient[all] if you need all transports, or smpclient[serial] / smpclient[ble] for specific connection types.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Optional transports (serial, BLE) require additional system dependencies; install with smpclient[serial] or smpclient[ble] to include them.
- Low install friction with a pure-wheel distribution.
License · maintenance · safety
Apache-2.0 (permissive) — Licensed under Apache-2.0 (permissive), allowing use in commercial and proprietary projects with minimal restrictions beyond attribution and liability disclaimers.
last release 2026-07-06 (39 days) · last repo commit 2026-07-06 · 33 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 319,404 downloads/mo, #7,644 on PyPI
Alternatives
Verify before relying
pip install smpclient
from smpclient.transport.serial import SMPSerialTransport
import asyncio
async def upgrade_firmware(port, image_path):
transport = SMPSerialTransport(port)
await transport.open()
# Use transport to send SMP commands
await transport.close()- Whether the library's async-timeout dependency version constraints are compatible with current asyncio best practices
- Real-world performance characteristics when handling large firmware images across different transport types
What it is and what it does
smpclient is a Python library that implements the transport layer for the Simple Management Protocol, a specification for remotely managing embedded devices. It handles the low-level communication details needed to send SMP commands and receive responses over multiple connection types: serial ports (UART, USB, CAN), Bluetooth Low Energy, and UDP. The library abstracts away protocol-specific framing, encoding, and fragmentation so that applications can focus on higher-level device management tasks.
The library is built on async/await patterns and provides transport classes for each connection type, along with helper abstractions for common operations like firmware upgrades. It manages the complexity of serial fragmentation (base64 encoding, line splitting, reassembly buffer sizing) and negotiates MTU parameters for BLE and UDP. If you need just the SMP message protocol without transport implementation, the underlying smp dependency is available separately; if you prefer a command-line tool instead of a library, smpmgr is the alternative.
Use it for
- Automate firmware updates on embedded devices connected via serial port or USB during manufacturing or field deployment
- Build a device management dashboard that communicates with multiple MCUs over BLE from a central Python service
- Implement remote diagnostics and configuration changes on deployed IoT devices via UDP or serial
- Integrate SMP protocol support into a Python-based embedded systems test harness or CI/CD pipeline
- Develop a cross-platform tool to query device parameters and logs from MCUs running Zephyr or mcuboot
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has no known vulnerabilities, low install friction, and fills a clear niche for Python developers needing to manage MCU devices via SMP. The permissive Apache-2.0 license poses no restrictions. Install with smpclient[all] if you need all transports, or smpclient[serial] / smpclient[ble] for specific connection types.
Install
smpclient on PyPI
Before you install
Low install friction with a pure-wheel distribution. Actively maintained with a recent release; no known vulnerabilities. Runtime dependencies are minimal and well-established (async-timeout, intelhex, smp).
Requires Python 3.10 or later. Optional transports (serial, BLE) require additional system dependencies; install with smpclient[serial] or smpclient[ble] to include them.
License in practice
Licensed under Apache-2.0 (permissive), allowing use in commercial and proprietary projects with minimal restrictions beyond attribution and liability disclaimers.
Quickstart
pip install smpclient
from smpclient.transport.serial import SMPSerialTransport
import asyncio
async def upgrade_firmware(port, image_path):
transport = SMPSerialTransport(port)
await transport.open()
# Use transport to send SMP commands
await transport.close()Verify before relying
- Whether the library's async-timeout dependency version constraints are compatible with current asyncio best practices
- Real-world performance characteristics when handling large firmware images across different transport types
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release <4,>=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 3 packagesasync-timeoutintelhexsmp |
| Maintenance | Actively maintained 39 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 319,404 / month, #7,644 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableFramework :: AsyncIOIntended Audience :: DevelopersLicense :: OSI Approved :: Apache Software LicenseOperating System :: MacOS :: MacOS XOperating System :: Microsoft :: WindowsOperating System :: POSIX :: LinuxProgramming Language :: PythonTopic :: Software Development :: Libraries |
Evidence: smpclient-7.3.0-py3-none-any.whl
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