google-chat-mcp (telnturtle/google-chat-mcp) is an MCP server listed on the M8ven Trust Index. It scores 58 out of 100, grade D. It declares 12 tools. No publisher has claimed this listing.

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D
Caution
58/100

google-chat-mcp

Enables AI assistants to read and send messages in Google Chat spaces using service account authentication.

→ telnturtle/google-chat-mcp· 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

telnturtle

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: 3 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.
// tools this server exposes12 tools

These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.

chat_health

로컬 MCP 설정과 Google Chat API 연결 상태를 확인합니다.

chat_auth_status

사용자 OAuth 토큰 상태를 확인합니다.

chat_auth_login_url

OAuth 로그인 URL을 반환합니다. 브라우저에서 열거나 npm run auth:login 사용.

chat_list_spaces

접근 가능한 Google Chat space 목록을 조회합니다.

chat_list_members

space 멤버 목록을 조회합니다 (DM 상대 displayName 포함).

chat_list_dm_peers

DM space별 참여자(이름) 목록을 조회합니다.

chat_find_dm

사용자와의 DM space를 찾습니다 (없으면 null).

chat_list_messages

space의 메시지 목록을 조회합니다. text는 includeText=true일 때만 포함됩니다.

chat_get_message

메시지 상세를 조회합니다. text는 includeText=true일 때만 포함됩니다.

chat_send_message

space에 메시지를 전송합니다. confirm이 true일 때만 실제 전송됩니다.

chat_send_dm

내 계정(user OAuth)으로 DM을 전송합니다. confirm=true 필수.

chat_delete_message

메시지를 삭제합니다. confirm이 true일 때만 실제 삭제됩니다.

// known CVEs in dependencies3 high

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

high@modelcontextprotocol/sdk@1.12.1GHSA-345p-7cg4-v4c7

@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse

high@modelcontextprotocol/sdk@1.12.1GHSA-8r9q-7v3j-jr4g

Anthropic's MCP TypeScript SDK has a ReDoS vulnerability

high@modelcontextprotocol/sdk@1.12.1GHSA-w48q-cv73-mx4w

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

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.
configGOOGLE_APPLICATION_CREDENTIALS
configGOOGLE_CHAT_ALLOWED_SPACE_IDS
configGOOGLE_CHAT_ALLOW_WRITE_TEST
configGOOGLE_CHAT_AUTH_MODEbot + GOOGLE_CHAT_SERVICE_ACCOUNT_PATH
configGOOGLE_CHAT_OAUTH_CLIENT_PATH/path/to/oauth-client.json
configGOOGLE_CHAT_OAUTH_CODE
configGOOGLE_CHAT_OAUTH_REDIRECT_URI
configGOOGLE_CHAT_READ_ONLY(선택, true면 쓰기 도구 미등록)
configGOOGLE_CHAT_SERVICE_ACCOUNT_PATHGOOGLE_CHAT_AUTH_MODE=bot +
configGOOGLE_CHAT_TEST_MESSAGE_MARKER
configGOOGLE_CHAT_TEST_SPACE_ID
configGOOGLE_CHAT_TOKEN_PATH/path/to/oauth-token.json
// 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

12/12 tools missing one or more hints — chat_health (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); chat_auth_status (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); chat_auth_login_url (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +9 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 inputs are validated

Only 5/12 tool handlers declare input schemas (42%)

Declare an inputSchema with zod/joi/yup on every tool definition.

License file

No license file

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

Tests exist

No test files found

Add tests that exercise each declared tool.

Production dependencies are patched

0 critical, 3 high severity in production deps — @modelcontextprotocol/sdk@1.12.1 (high), @modelcontextprotocol/sdk@1.12.1 (high)

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 6 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/telnturtle/google-chat-mcp?variant=verified)](https://m8ven.ai/mcp/telnturtle/google-chat-mcp)
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commit: c58533dac1a48d03c9b26297ff8f44c6d2587861
code hash: cd8587850076f6206b91e54bd31b43ab866d841b820c9a342f9d8fc09685193a
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