SimuBridge (naaomiur/simubridge-skills) is an MCP server listed on the M8ven Trust Index. It scores 60 out of 100, grade C. It declares 26 tools. No publisher has claimed this listing.
Enables AI assistants to control MATLAB Simulink models through natural language, providing tools for model creation, block management, wiring, simulation, and more via a local MCP backend.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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naaomiur
Source: Glama
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Install from
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.
Tool 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
26/26 tools missing one or more hints — eval_matlab (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); connect (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_library (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +23 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.
Destructive tools are labelled
1 tool perform destructive updates without destructiveHint — set_mfunction_code deletes at line 283 (_os.unlink(tmp.name))
Add destructiveHint:true to any tool whose handler calls .delete(), .upsert(), .update(), unlink, rm, DELETE, DROP, REPLACE INTO, or any operation that overwrites existing data.
Descriptions match behaviour
2 tools describe read intent but their handlers mutate — describe_block (line 1214: eng.eval(f"load_system('{escape_matlab(lib_name)}');",); get_mfunction_code (line 1392: raw = str(eng.eval()
Rename the tool, rewrite the description, or move the side-effect into a separate clearly-named tool.
Tests exist
No test files found
Add tests that exercise each declared tool.
Tool description accuracy
describe_block: description implies read-only but handler writes/deletes/executes; get_mfunction_code: description implies read-only but handler writes/deletes/executes
Update tool descriptions to accurately reflect all capabilities — especially write, delete, or execute operations.
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