Jupyterlab Collab MCP Server
jupyterlab-collab-mcp
npm
v0.15.0
Source verified
Published by ianhi — publish provenance cryptographically ties this package to that repository. That is proof of origin, not an official vendor package.
MCP server for real-time JupyterLab notebook collaboration
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 − 0 = 100. What the published surface and source actually contain:
The deterministic scan raised no scored threat in the surface it inspected — the threat score stayed at 100. Capability observations and advisory notes are recorded but never lower it.
2. Client adoption risk — 100 − 6 = 94. 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 |
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 6
high Dynamic code execution in server code (dist/variable-inspector.js)MTC-SRC-001
In the server's implementation (`dist/variable-inspector.js:97`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: try: _vi_obj = eval(_vi_name) _vi_results.append(inspect_one(_vi_name, _vi_obj, max_items=${maxItems},
Fix: Review this call path: confirm it never receives unsanitized tool input, constrain it, or remove it. Treat a server whose code reaches these sinks as high-capability regardless of what its tools claim.
Location: server dist/variable-inspector.js
high Dynamic code execution in server code (src/variable-inspector.ts)MTC-SRC-001
In the server's implementation (`src/variable-inspector.ts:130`): Evaluating strings as code is the most direct RCE primitive; if any tool input reaches it, the server executes attacker-chosen code. This is read from the code itself — not from the tool description — so a poisoned server cannot hide it behind honest-looking metadata.
Evidence: try: _vi_obj = eval(_vi_name) _vi_results.append(inspect_one(_vi_name, _vi_obj, max_items=${maxItems},
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 src/variable-inspector.ts
high Shell/command execution in server code (dist/handlers/kernel-lsp.js)MTC-SRC-002
In the server's implementation (`dist/handlers/kernel-lsp.js:257`): 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: spawn } = await import("child_process"); const result = await new Promise((resolve, reject) => {
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/handlers/kernel-lsp.js
high Shell/command execution in server code (dist/rename.js)MTC-SRC-002
In the server's implementation (`dist/rename.js:5`): 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: rt { spawn } from "node:child_process"; import { getCellType } from "./helpers.js"; /** * Concatenate code cells into a
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/rename.js
high Shell/command execution in server code (src/handlers/kernel-lsp.ts)MTC-SRC-002
In the server's implementation (`src/handlers/kernel-lsp.ts:336`): 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: spawn } = await import("child_process"); const result = await new Promise<string>((resolve, reject) => {
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 src/handlers/kernel-lsp.ts
high Shell/command execution in server code (src/rename.ts)MTC-SRC-002
In the server's implementation (`src/rename.ts:6`): 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: rt { spawn } from "node:child_process"; import { type NotebookCell } from "./notebook-fs.js"; import { getCellType, extr
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 src/rename.ts
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 2
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 |
|---|---|---|---|---|
v0.15.0 latest |
A 94/100 | 6 | 1.13.0 | 2026-08-25 |
v0.14.0 |
A 94/100 | 6 | 1.12.1 | 2026-07-27 |
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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