Google Workspace MCP Server
Comprehensive MCP server for Google Workspace with 95+ tools to manage Docs, Sheets, Drive, Gmail, Calendar, Slides, and Forms.
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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pm990320
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.
When Vitest UI server is listening, arbitrary file can be read and executed
Prototype Pollution in sheetJS
SheetJS Regular Expression Denial of Service (ReDoS)
GOOGLE_MCP_ALLOWED_READ_PATHSGOOGLE_MCP_ALLOWED_WRITE_PATHSGOOGLE_MCP_FORBIDDEN_PATHSGOOGLE_MCP_MAX_RESPONSE_CHARSGOOGLE_MCP_NO_THIRD_PARTYGOOGLE_MCP_READ_ONLYtrue npx google-workspace-mcp serveAll four hints declared on every tool
48/106 tools missing one or more hints — listAccounts (missing: destructiveHint, idempotentHint); listCalendars (missing: destructiveHint, idempotentHint); listCalendarEvents (missing: destructiveHint, idempotentHint), +45 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
37/106 tools referenced in tests (35%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
1 call in production code run through a shell (src/cli.ts:58)
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 2 high severity in production deps — xlsx@0.18.5 (high), xlsx@0.18.5 (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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