MCP Calendar Assistant (momer17/MailMCP) is an MCP server listed on the M8ven Trust Index. It scores 74 out of 100, grade C. It declares 16 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
C
Caution
74/100

MCP Calendar Assistant

Enables AI assistants to manage calendars and tasks through natural language, supporting Google Calendar operations like event creation, availability checking, and smart scheduling. It features schedule analysis, task reminders, and meeting time recommendations to streamline productivity.

→ momer17/MailMCP· listed on glama

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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Who stands behind it

momer17

Source: Glama

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Install from

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.

// key findings
⚠️
Known vulnerabilities in dependencies: 1 high
Affects packages this MCP installs at runtime. Upgrade or remove the affected dependency.
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
🔐
You'll be asked for 3 credentials: GOOGLE_CLIENT_SECRET, JWT_SECRET, WEBHOOK_SECRET
These are read from process.env at runtime. Make sure you trust where they’ll be sent.
// known CVEs in dependencies1 high3 low

Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.

high@modelcontextprotocol/sdk@0.5.0GHSA-w48q-cv73-mx4w

Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default

lowexpress@4.18.2GHSA-qw6h-vgh9-j6wx

express vulnerable to XSS via response.redirect()

lowexpress@4.18.2GHSA-rv95-896h-c2vc

Express.js Open Redirect in malformed URLs

lowzod@3.22.0GHSA-m95q-7qp3-xv42

Zod denial of service vulnerability

Depend on this server? Get alerted when its CVEs change.Watch this server free →
// 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.
configALERT_WEBHOOK_URL
configBCRYPT_ROUNDS
configCORS_CREDENTIALS
configCORS_ORIGIN
configDATABASE_SSL
configDB_POOL_ACQUIRE_TIMEOUT
configDB_POOL_IDLE_TIMEOUT
configDB_POOL_MAX
configDB_POOL_MIN
configFEATURE_ANALYTICSfalse # Enable usage analytics
configFEATURE_BATCHINGtrue # Enable batch operations
configFEATURE_CACHINGtrue # Enable Redis caching
configFEATURE_MAX_BATCH_SIZE
configFEATURE_MULTI_PROVIDERfalse # Enable multiple calendar providers
configFEATURE_PREFETCHINGtrue # Enable predictive data loading
configGOOGLE_CLIENT_IDGoogle OAuth client ID Required
🔐 secretGOOGLE_CLIENT_SECRETGoogle OAuth client secret Required
configGOOGLE_REDIRECT_URI
configGOOGLE_SCOPES
configHOST
configJWT_EXPIRY
🔐 secretJWT_SECRETSecret for JWT tokens Required
configLOG_CONSOLE_COLORIZE
configLOG_CONSOLE_ENABLED
configLOG_FILE_ENABLED
configLOG_FILE_MAX_FILES
configLOG_FILE_MAX_SIZE
configLOG_FILE_NAME
configLOG_FORMAT
configLOG_LEVEL
configMCP_MAX_TOOL_CALLS
configMCP_SERVER_NAME
configMCP_TIMEOUT
configMCP_VERSION
configRATE_LIMIT_MAX_REQUESTS
configRATE_LIMIT_SKIP_SUCCESSFUL
configRATE_LIMIT_WINDOW_MS
configREDIS_TTL_CONTACTS
configREDIS_TTL_EVENTS
configREDIS_TTL_FREE_TIME
configREDIS_TTL_USER_PREFS
configREFRESH_TOKEN_EXPIRY
🔐 secretWEBHOOK_SECRET
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployDATABASE_URL
deployPORT
deployREDIS_URL
// 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

16/16 tools missing one or more hints — get_calendars (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); get_calendar_events (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); create_calendar_event (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +13 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.

License file

No license file

Add a LICENSE file (MIT, Apache-2.0, etc.).

Tool test coverage

7/16 tools referenced in tests (44%)

Write tests that reference each tool by name so every tool has at least one test.

Production dependencies are patched

0 critical, 1 high severity in production deps — @modelcontextprotocol/sdk@0.5.0 (high), express@4.18.2 (low)

Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.

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
[![M8ven Verified](https://m8ven.ai/badge/mcp/momer17/mailmcp?variant=verified)](https://m8ven.ai/mcp/momer17/mailmcp)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: 5cfa10c3186d52f8f43d119575006a420396012b
code hash: b21d6ee3b3cbbdad78af5eae5da9058770194be6fddb9fea21289267f744d3c2
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