Verbiflow MCP Server
verbiflow-mcp
npm
v0.0.46
Published by an unidentified publisher — no publish provenance and no public repository, so the publisher could not be verified and the source cannot be independently located.
Open-source MCP server that turns Claude into a GTM operator — design sequences, connect mailboxes, send outreach, all from chat.
The grade answers one question — how safe is this server for you to adopt — so it is computed in two auditable stages. Nothing below is an opinion or an LLM's guess; every line is a real term the deterministic engine applied, and the same input always yields the same number.
1. Threat score — 100 − 6.3 = 94. What the published surface and source actually contain:
| Points | What was found | Category |
|---|---|---|
| −6.3 | Untrusted input concatenated into a command sink MTC-SRC-009 | injection |
2. Client adoption risk — 94 − 8 = 86. Three small, subtract-only factors that reflect your risk in adopting it — a clean scan proves less on a powerful, unverified or barely-inspectable package, so the grade says so plainly:
| Points | Adoption-risk factor |
|---|---|
| −6 | capability blast radius (high) — client exposure if the model is manipulated |
| −2 | publisher verification (unlinked) — no provenance/repo link, but the shipped source was fully read |
Capability observations and info notes are shown under Findings but never scored.
Open any row's finding below for the file, line and evidence behind a deduction.
Findings 8
high Shell/command execution in server code (dist/browser-cookies/chrome-macos.js)MTC-SRC-002
In the server's implementation (`dist/browser-cookies/chrome-macos.js:4`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: ecFileSync } from 'node:child_process'; import crypto from 'node:crypto'; import fs from 'node:fs'; import os from 'node
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/browser-cookies/chrome-macos.js
high Shell/command execution in server code (dist/chrome/tab.js)MTC-SRC-002
In the server's implementation (`dist/chrome/tab.js:10`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: { execFile } from 'node:child_process'; import { randomUUID } from 'node:crypto'; import { promisify } from 'node:util';
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/chrome/tab.js
high Shell/command execution in server code (dist/crunchbase/chrome-tab.js)MTC-SRC-002
In the server's implementation (`dist/crunchbase/chrome-tab.js:14`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: ecFileSync } from 'node:child_process'; import { randomUUID } from 'node:crypto'; import { writeFileSync, unlinkSync } f
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/crunchbase/chrome-tab.js
high Shell/command execution in server code (dist/gateway-browser.js)MTC-SRC-002
In the server's implementation (`dist/gateway-browser.js:1`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: ecFileSync } from 'node:child_process'; import crypto from 'node:crypto'; import fs from 'node:fs'; import path from 'no
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/gateway-browser.js
high Shell/command execution in server code (dist/linkedin-cookies/windows.js)MTC-SRC-002
In the server's implementation (`dist/linkedin-cookies/windows.js:4`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: ecFileSync } from 'node:child_process'; import crypto from 'node:crypto'; import fs from 'node:fs'; import os from 'node
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/linkedin-cookies/windows.js
high Shell/command execution in server code (dist/tools/local_escape_hatch/linkedin_feed_scrape.js)MTC-SRC-002
In the server's implementation (`dist/tools/local_escape_hatch/linkedin_feed_scrape.js:24`): Spawning a shell/process is command-execution capability; with unsanitized tool input it is command injection / RCE. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: { execFile } from 'node:child_process'; import { randomUUID } from 'node:crypto'; import { promisify } from 'node:util';
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/tools/local_escape_hatch/linkedin_feed_scrape.js
medium Hardcoded egress to an external endpoint (dist/tools/admin_session/connect.js)MTC-SRC-003
In the server's implementation (`dist/tools/admin_session/connect.js:16`): A hardcoded outbound call to a fixed external host inside server code is a classic exfiltration/telemetry channel — especially paired with reads of local data. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: const res = await fetch('https://ipapi.co/country/', { signal: ac.signal }); if (!res.ok) retu
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/tools/admin_session/connect.js
medium Untrusted input concatenated into a command sink (dist/tools/local_escape_hatch/linkedin_feed_scrape.js)MTC-SRC-009
In the server's implementation (`dist/tools/local_escape_hatch/linkedin_feed_scrape.js:230`): A shell/process command assembled from concatenated or interpolated values is command injection when any part is attacker-influenced — the OWASP canonical RCE flow. Verify what reaches the interpolated value. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: -call slot. exec(`(function(){ delete (window.__flage_run || {})[${JSON.stringify(id)}]; return 'ok'; })()`)
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/tools/local_escape_hatch/linkedin_feed_scrape.js
What this scan could not see
- No tools were enumerated, so prompt-injection, capability and toxic-flow analysis had no tool surface to inspect. To grade a package’s real runtime tools, scan the running server: --command "npx -y <package>".
Versions 1
Scan history per published version. The engine is deterministic — the same version always yields the same score, so a changed score means the package itself changed.
| Version | Score | Findings | Engine | Scanned |
|---|---|---|---|---|
v0.0.46 latest |
B 86/100 | 8 | 1.13.0 | 2026-09-07 |
Embed this score
Show this server's live Trust Score in your README, docs or website. The badge is served straight from the registry and updates automatically after every rescan — no API key needed. It links back to this page, so anyone who sees the grade can also read the findings behind it instead of taking a number on faith.
Verify this score yourself
The score above is reproducible: the same package version always yields the same result. Run it locally or over the free API — no account, no LLM, fully deterministic.
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