Sigmatek LASAL MCP Server
Automates the Sigmatek LASAL software suite for PLC and HMI engineering, enabling AI assistants to inspect projects, apply structural changes, compile, download to hardware, and control PLC runtime.
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Svel26
Source: Glama
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The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
select_projectSet the active LASAL project by its full path. All subsequent tools will operate on this project.
manage_visudesignerOpen or close VISUDesigner. Use action='open' to launch it with a station file from the active project; action='close' kills the process.
manage_class2Open or close LASAL CLASS 2. Use action='open' to launch it with the active project's .lcp file; action='close' kills the process.
inspect_projectParse a LASAL CLASS 2 project (.lcp) and return a complete structural inventory: all classes with their Server/Client channels, all networks with their objects and connections. Use this before making any changes to understand what exists and how things are connected.
inspect_visu_projectRead a VISUDesigner (.lvp) project's current state from disk: stations (connection targets), datapoints (HMI-visible PLC values with types), languages, text list names, and schemes. Use this before visu_project to understand what already exists.
class_sourceRead or write the source of a CLASS 2 class (.st file). Use action='read' to retrieve method implementations and variable declarations before modifying; action='write' to apply code changes back to the file. The IDE must be closed when writing; use manage_class2 with action='close' first if needed. …
set_target_ipChange the online connection target for a station in the project's .lss file. Surgically updates only the TCPIP element, preserving all other file content. Use before build_project with action='download' when targeting a different device.
apply_project_changesApply structural changes to a LASAL CLASS 2 project. Channel operations (add/remove/rename_server, add/remove/rename_client) edit .st files directly and cascade to all .lcn network files automatically. Network operations (create/delete/rename_network, add/remove/rename_object, create/delete_connecti…
build_projectCompile or download a LASAL CLASS 2 project. action='compile' builds the project (kills any open CLASS 2 first, returns errors and warnings). action='download' transfers the compiled project to a PLC over the Sigmatek online protocol (TCP port 1954).
control_plcControl the runtime state of a PLC. action='start' runs the project; action='stop' halts it; action='get_state' queries the current state (e.g. Running, Stopped, Offline). Uses the project's saved connection if none is specified.
plc_valuesRead or write live channel values on a running PLC. action='read' fetches values for the given channels; action='write' pushes new values. Each channel is specified as 'ObjectName.ChannelName'. Opens a connection, performs all operations, then closes it.
visu_projectdeploy_allRun the full deploy pipeline in one call: compile CLASS 2 → download to PLC → update VISUDesigner stations → optionally download visu to HMI. Each step is skipped if its flag is false. Stops immediately on any failure and reports which step failed. Use after making CLASS 2 or VISUDesigner changes to…
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default
LASAL_CLASS2_EXELASAL_VISUDESIGNER_EXETool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
13/13 tools missing one or more hints — select_project (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); manage_visudesigner (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); manage_class2 (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +10 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
License file
No license file
Add a LICENSE file (MIT, Apache-2.0, etc.).
Tests exist
No test files found
Add tests that exercise each declared tool.
Shell command execution
9 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.1 (high), @modelcontextprotocol/sdk@1.12.1 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
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