posthog-foss (PostHog/posthog-foss) is an MCP server listed on the M8ven Trust Index. It scores 80 out of 100, grade B. It declares 67 tools. No publisher has claimed this listing.

Back to MCP Trust IndexM8ven
B
Caution
80/100
3 days ago

posthog-foss

PostHog FOSS is a read-only mirror of PostHog, with all proprietary code removed. NOTE: This repo is synced automatically from the main PostHog repo. Please raise any issues and PRs there.

→ PostHog/posthog-foss· listed on github_code

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.

How we 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

PostHog

Source: github_code

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

GitHub

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

// key findings
⚠️
Known vulnerabilities in dependencies: 2 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.
// known CVEs in dependencies2 high14 low

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

high@toon-format/toon@2.1.0GHSA-p95v-992w-h6c3

TOON: Prototype pollution when decoding untrusted TOON input

highhono@4.12.21GHSA-88fw-hqm2-52qc

hono: CORS Middleware reflects any Origin with credentials when `origin` defaults to the wildcard

low@hono/node-server@2.0.2GHSA-9mqv-5hh9-4cgg

Node.js Adapter for Hono: Unauthenticated memory-leak DoS via aborted WebSocket handshake

low@hono/node-server@2.0.2GHSA-frvp-7c67-39w9

Node.js Adapter for Hono: Path traversal in `serve-static` on Windows via encoded backslash (`%5C`)

lowfflate@0.8.2GHSA-px8p-9vwx-vf98

fflate unzipSync can enter an infinite loop when parsing malformed ZIP64 archives

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.
configHOST
Deployment configuration, supplied by whoever hosts the server. Users are not asked for these.
deployPORT
deployREDIS_URL
// quality suggestions

License file

No license file

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

Production dependencies are patched

0 critical, 2 high severity in production deps — @toon-format/toon@2.1.0 (high), hono@4.12.21 (high)

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

Dependency freshness

1/25 production deps stale: prosemirror-collab@2023-05-17 (3.3y)

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 2 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/posthog/posthog-foss?variant=verified)](https://m8ven.ai/mcp/posthog/posthog-foss)
Shows verification status without the grade. Want the grade badge instead? Remove ?variant=verified from the URL.
commit: 13c8f705ec1d48a6befdfa3b4e9a9f495ac90bd5
code hash: 93f6225a65d4b82a1aef24975bbb1230130478bdf35dc38907a3204cffa128c6
verified: 9/7/2026, 5:59:02 PM
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