Hardened Google Workspace MCP (c0webster/hardened-google-workspace-mcp) is an MCP server listed on the M8ven Trust Index. It scores 2 out of 100, grade F. It declares 41 tools. No publisher has claimed this listing.

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F
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2/100

Hardened Google Workspace MCP

A security-hardened integration that enables Claude to interact with Google Workspace tools like Gmail, Drive, and Docs while preventing data exfiltration by disabling features like email sending and external file sharing. It allows users to safely manage emails, documents, and calendars through natural language without risking unauthorized external communication.

→ c0webster/hardened-google-workspace-mcp· listed on glama

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Who stands behind it

c0webster

Source: Glama

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Glamanot scored here

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.

⏳ This MCP is queued for scoring. Check back in a few minutes.
// key findings
🚨
Reads files from sensitive locations
Touches: .credentials, credentials, .credentials
🔐
You'll be asked for 2 credentials: GOOGLE_OAUTH_CLIENT_SECRET, FASTMCP_SERVER_AUTH_GOOGLE_JWT_SIGNING_KEY
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// environment variables
To run this server yourself, you supply these values. They go in your own MCP client configuration and stay on your machine. The secret label means the value is sensitive, not that the server mishandles it.
configGOOGLE_OAUTH_CLIENT_IDe ="YOUR_CLIENT_ID" \
configGOOGLE_MCP_CREDENTIALS_DIR
configGOOGLE_CLIENT_SECRET_PATH
🔐 secretGOOGLE_OAUTH_CLIENT_SECRETe ="YOUR_CLIENT_SECRET" \
configGOOGLE_OAUTH_REDIRECT_URI
configOAUTHLIB_INSECURE_TRANSPORT
configMCP_SINGLE_USER_MODE
configWORKSPACE_MCP_BASE_URI
configWORKSPACE_MCP_PORT
configWORKSPACE_EXTERNAL_URL
configMCP_ENABLE_OAUTH21
configEXTERNAL_OAUTH21_PROVIDER
configWORKSPACE_MCP_STATELESS_MODE
configOAUTH_CUSTOM_REDIRECT_URIS
configOAUTH_ALLOWED_ORIGINS
🔐 secretFASTMCP_SERVER_AUTH_GOOGLE_JWT_SIGNING_KEY
configWORKSPACE_MCP_OAUTH_PROXY_STORAGE_BACKEND
configWORKSPACE_MCP_OAUTH_PROXY_VALKEY_HOST
configFASTMCP_HOME
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
// quality suggestions

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

41/41 tools missing one or more hints — start_google_auth (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); list_calendars (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_events (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +38 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 handlers catch errors

Only 8/41 tool handlers wrap calls in try/catch (20%)

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 access to sensitive paths

Reads sensitive paths: .credentials, credentials, .credentials

Remove reads of sensitive system paths. If you genuinely need them, document why in the README.

Claim the listing to review these findings one by one and send us a correction where you disagree, straight to the team. Claiming also means we tell you when the grade moves, and reach you first if we find anything urgent.

// full audit trail
The findings above are the summary. The full trail, every check we ran, each deduction, the network hosts observed and the dependency advisories, goes to verified publishers, along with an alert whenever a new one lands. Verified publishers can also review each finding and dispute it in one click. Publisher corrections have sharpened several of our checks this month, because the maintainer knows the codebase better than any scanner.
// improvement guidance — verified publishers only
We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.
// embed badge in your README
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commit: a3f8756b7e25512808efbddc7b93b1a2f7f1fc55
code hash: 8352e2759a5843366bf9415fef4cdcf7da6d66dd97907330763b002142de6775
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