About J-Link MCP
J-Link MCP is an MCP server in the IoT category: debug embedded firmware on real hardware: J-Link probes, Cortex-M faults, RTT logs, GDB.
Install
claude mcp add j-link-mcp -- npx -y jlink-mcpnpx -y jlink-mcpThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (3)
diagnose_crashAuto-reads and decodes ARM Cortex-M fault registers (CFSR, HFSR, MMFAR, BFAR) with exception stack frame.
Parameters not published.
snapshotCaptures full device state: registers, fault status, stack dump, RTT output.
Parameters not published.
start_debug_session**One-call setup.** Starts GDB server + connects RTT + returns boot log.
Parameters not published.
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