stitch-pro-mcp
An intelligent MCP server for Google Stitch that generates production-ready UI from text prompts, with auto-orchestration of design systems, WCAG accessibility, responsive breakpoints, and framework conversion (React, Vue, Svelte).
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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LuciferDono
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.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
Handlebars.js has JavaScript Injection via AST Type Confusion
When Vitest UI server is listening, arbitrary file can be read and executed
Handlebars.js has JavaScript Injection via AST Type Confusion by tampering @partial-block
Handlebars.js has Denial of Service via Malformed Decorator Syntax in Template Compilation
Handlebars.js has JavaScript Injection via AST Type Confusion when passing an object as dynamic partial
STITCH_API_KEYTip: Set as a system environment variable and omit the env block entirely.STITCH_PRO_LOG_LEVELAll four hints declared on every tool
17/17 tools missing one or more hints — sp_a11y (missing: openWorldHint); sp_auto (missing: openWorldHint); sp_analyze (missing: openWorldHint), +14 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.
Tool test coverage
Only 1/17 tools referenced in tests (6%)
Write tests that reference each tool by name so every tool has at least one test.
Secrets stay with their owner
1 secret/sensitive value flow into network calls (STITCH_API_KEY → stitch.googleapis.com)
Audit where credentials are sent. A NOTION_TOKEN should only reach api.notion.com — never a third-party host.
Production dependencies are patched
1 critical, 4 high severity in production deps — handlebars@4.7.8 (critical), handlebars@4.7.8 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
1 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
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