OpenTabs (opentabs-dev/opentabs) is an MCP server listed on the M8ven Trust Index. It scores 98 out of 100, grade A. It declares 14 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
A
Trusted
98/100
1 month ago

OpenTabs

Open-source MCP server that gives AI agents access to 100+ web applications through the user's authenticated browser session. No API keys, no screenshots, no DOM scraping — talks directly to web app internal APIs via a Chrome extension. Supports Slack, Discord, GitHub, Jira, Notion, Reddit, X, and 100+ more services with ~2,000 tools. Works with Claude Code, Cursor, Windsurf, and any MCP client.

→ opentabs-dev/opentabs· listed on glama

Trusted. Deep verification, no outstanding findings, and an established reputation. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.

How we verified

Code Verified⚡ Live Monitored: not connected

Verified is a snapshot. Live keeps it current, and builds your track record.

⚡ Connect GitHub → continuous verification on every pushwhy connect →

Who stands behind it

opentabs-dev

Source: Glama · also listed on github_topic

Is this your MCP?

Claim it to get a verified publisher badge, a free copy of our full audit findings, and direct contact for any high-priority issues we find. Or connect your repo for our deepest verification, Live Monitored: read-only, revoke anytime. What we access →

⚡ Connect GitHub for Live Monitored

Install from

GlamaGitHub

M8ven verifies MCPs across every public registry — install directly from whichever one you prefer.

// key findings
✅
No credential exfiltration, no sensitive file access, no obfuscation
Static analysis found nothing flowing your secrets to unexpected places.
// 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.
configDO_NOT_TRACK
configHOST
configOPENTABS_CONFIG_DIR
configOPENTABS_DANGEROUSLY_SKIP_PERMISSIONS
configOPENTABS_DEV
configOPENTABS_GENERATING_CATALOG
configOPENTABS_LOG_LEVEL
configOPENTABS_MTIME_POLL_MS
configOPENTABS_PROXY
configOPENTABS_SKIP_NPM_DISCOVERY
configOPENTABS_TELEMETRY_DEBUG
configOPENTABS_TELEMETRY_DISABLED
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

14/14 tools missing one or more hints — browser_list_tabs (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); opentabs_list_tools (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); opentabs_call (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +11 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.

README present

No README found

Add a README.md describing the server and its tools.

License file

No license file

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

Tool test coverage

6/14 tools referenced in tests (43%)

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

Shell command execution

2 child_process calls — runs shell commands

Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.

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 Score](https://m8ven.ai/badge/mcp/opentabs-dev/opentabs)](https://m8ven.ai/mcp/opentabs-dev/opentabs)
Shows your grade and updates automatically. Prefer no grade? Append ?variant=verified to the badge URL.
commit: de9200b1231cae419d1a437e410114a9e2fe8eca
code hash: ce4154442e2dfc9e574011ff8fd6f6676598702872e00da9657c06a610e3bc54
verified: 8/7/2026, 2:52:03 AM
view raw JSON →
Check MCPs from inside your assistant
Tool Check · MCP

Vetting this one by hand? Tool Check is an MCP that scores other MCPs. Add it once and ask Claude, ChatGPT, or any MCP client to grade a server, surface CVEs, check the publisher, and suggest safer alternatives — before you install.

https://m8ven.ai/api/mcp/tool-check
check_toolsearch_toolscompare_toolsrecommend_alternativescheck_publisherreport_concern
How to add it →Free · no account needed · works in any MCP client