MCP server that gives Claude full read-write access to Google Drive, Docs, Sheets, and Slides using your own Google OAuth credentials and hosted server.
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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adampaulwalker
Source: Glama
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FASTMCP_SERVER_AUTH_GOOGLE_JWT_SIGNING_KEYWORKSPACE_MCP_OAUTH_PROXY_STORAGE_BACKENDWORKSPACE_MCP_OAUTH_PROXY_VALKEY_HOSTFASTMCP_HOMEWORKSPACE_MCP_ALLOWED_CLIENT_REDIRECT_URISWORKSPACE_MCP_READ_ONLYNo off Drop the write scopes and disable every mutating toolWORKSPACE_MCP_TRANSPORTstreamable-httpWORKSPACE_MCP_PORTNo 8000 Port to bind. Railway sets PORT, which takes precedenceWORKSPACE_MCP_BASE_URINo http://localhost Base used with the port when WORKSPACE_EXTERNAL_URL is unsetWORKSPACE_MCP_HOSTNo 0.0.0.0 Bind addressWORKSPACE_EXTERNAL_URLYes when deployed none Public URL the server is reachable at, used as the base for the OAuth endpointsGOOGLE_OAUTH_CLIENT_SECRETyour-client-secretWORKSPACE_MCP_CREDENTIALS_DIR./store_credsGOOGLE_MCP_CREDENTIALS_DIRGOOGLE_OAUTH_CLIENT_IDyour-client-id.apps.googleusercontent.comMCP_SINGLE_USER_MODENo off Single-user mode, an alternative to OAuth 2.1MCP_ENABLE_OAUTH21Claude Desktop speaks stdio rather than HTTP. Comment out WORKSPACE_MCP_TRANSPORT, , and WORKSPACE_MCP_STATELESS_MODE, then set:DOWNLOAD_FILE_CONTENT_MAX_MBNo 25 Largest file download_file_content will return inlineWORKSPACE_MCP_GCS_BUCKETWORKSPACE_MCP_GCS_PREFIXWORKSPACE_MCP_GCS_REQUIRE_CMEKWORKSPACE_MCP_CREDENTIAL_STORE_BACKENDSESSION_TIMEGOOGLE_CLIENT_SECRET_PATHGOOGLE_OAUTH_REDIRECT_URINo <base URL>/oauth2callback Callback URI, and it must match one registered on the OAuth clientOAUTHLIB_INSECURE_TRANSPORTOAUTHLIB_RELAX_TOKEN_SCOPEEXTERNAL_OAUTH21_PROVIDERWORKSPACE_MCP_STATELESS_MODEClaude Desktop speaks stdio rather than HTTP. Comment out WORKSPACE_MCP_TRANSPORT, MCP_ENABLE_OAUTH21, and , then set:GOOGLE_SERVICE_ACCOUNT_KEY_FILEGOOGLE_SERVICE_ACCOUNT_KEY_JSONDWD_ALLOWED_DOMAINSOAUTH_CUSTOM_REDIRECT_URISOAUTH_ALLOWED_ORIGINSWORKSPACE_ATTACHMENT_DIRPORTTool annotations
18/19 tools have annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
1/19 tools missing one or more hints — func (missing: readOnlyHint, 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 5/18 tool handlers wrap calls in try/catch (28%)
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.
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