widget-studio (ericlewis/widget-studio-mcp) is an MCP server listed on the M8ven Trust Index. M8ven has not graded it: there is no public source to read and no endpoint we can reach, so there is nothing for us to inspect. No publisher has claimed this listing.
MCP server that lets agents create, display, and export rich UI widgets (cards, dashboards, charts, forms) inline in conversations, with interactive iframe support in MCP Apps hosts and PNG image fallback for other clients.
Emerging. No concerning findings. Grades remain capped until the project builds reputation through adoption. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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ericlewis
Source: Glama
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WIDGET_STUDIO_IMAGEautoalwaysnever.WIDGET_STUDIO_IMAGE_THEMEWIDGET_STUDIO_USER_IDeditor; requests carry a stable random user ID ( to pin).All four hints declared on every tool
1/1 tools missing one or more hints — export_widget (missing: destructiveHint, idempotentHint, openWorldHint). 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.
Tool handlers catch errors
Only 0/1 tool handlers wrap calls in try/catch (0%)
Wrap each tool handler body in try/catch and return a structured error response.
Tests exist
No test files found
Add tests that exercise each declared tool.
No eval / new Function
1 eval() or new Function() call — dynamic code execution
Replace eval / Function with explicit parsing or safer alternatives.
Shell command execution
2 child_process/subprocess calls in production code — runs shell commands (evals/run-golden.mjs:26, evals/run-golden.mjs:46)
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
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