The request is for wireless sensor tags, which are physical devices, so the answer depends on which platform the tags run on. Among the candidates, Espressif (wireless SoCs and firmware for IoT) and Golioth (device connectivity and data routing for custom hardware) most directly address building wireless sensor devices, while Meshtastic (off-grid LoRa mesh devices) and HARDWARIO (industrial IoT field devices) are also relevant hardware platforms.

A question back: Which wireless protocol or platform do you want the sensor tags to use (for example Wi-Fi, BLE, LoRa/Meshtastic, or a cellular network), and do you need a specific microcontroller or existing hardware

1. 1

   Espressif Systemsespressif.comfound in code, not yet checked

   Provides wireless SoCs, firmware and software frameworks for building wireless IoT devices 7.

   WebsiteDocsGet started

   for agents: set_params · get_params · get_node_status

2. 2

   Goliothgolioth.iowebsite read, tools not yet checked

   Lets developers build, secure, manage and connect custom hardware and route device data to the cloud over Wi-Fi, cellular, Thread or Bluetooth 10.

   WebsiteDocsPricingGet started

3. 3

   Meshtasticmeshtastic.orgfound in code, not yet checked

   Open source, low-power LoRa mesh network for off-grid peer-to-peer device communication without cell towers or internet 2.

   WebsiteDocs

   +3 community tools built for it

   for agents: telemetry_timeline · inject_frame · device_info

4. 4

   HARDWARIOhardwario.comwebsite read, tools not yet checked

   Supplies production-ready field devices with radio connectivity and device management for industrial IoT solutions 6.

   WebsiteDocs