About Gxworks3 MCP Bridge
Gxworks3 MCP Bridge is an MCP server in the IoT category: mCP server that lets AI assistants read, write, and compile Structured Text (ST) in Mitsubishi GX Works3 via Windows UI Automation — with a preview→confirm write-safety layer.
Install
git clone https://github.com/coder007rahul/gxworks3-mcp-bridgeThis 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 (7)
attach_and_list_pousAttaches to the running GX Works3 and lists every open window/POU title. Call this first to discover exact POU names.
Parameters not published.
compile_and_get_errorsRuns *Rebuild All* and returns all compile errors/warnings as JSON, without writing anything.
Parameters not published.
preview_write_compile_and_get_errorsSame preview as above, but for the write-then-compile tool.
Parameters not published.
preview_write_st_codeDry-run of a write: reads the current code, shows a diff, and returns `currentStateHash` + a single-use `safetyToken`. Nothing is written.
Parameters not published.
read_st_codeReturns the full current ST code of the named POU.
Parameters not published.
write_compile_and_get_errorsWrites ST code → runs *Rebuild All* → returns compile errors/warnings as JSON. Requires `confirm=true` + `safetyToken`.
Parameters not published.
write_st_codeWrites ST code into a POU (full replace). Requires `confirm=true` + the `safetyToken` from a matching preview. Reads back and verifies after writing.
Parameters not published.
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