"Free APIs and services without commercial fees" matching MCP connectors:

M12 lens and C-mount lens finder with image-sensor matching and field-of-view calculator.

Page-cited retrieval for embedded docs, datasheets, MISRA, CMSIS, and RTOS references.

Medius docs: the binary control protocol, device behavior, and the medius Rust library.

Create RF signal projects from prompts, inspect graphs, and export IQ data.

Run, build, and validate firmware on virtual hardware from your AI agent. Hardware knowledge corpus.