Overleaf Web MCP Server
overleaf-web-mcp
npm
v0.1.3
Source verified
Published by mhmdaskari — publish provenance cryptographically ties this package to that repository. That is proof of origin, not an official vendor package.
Unofficial MCP server for browsing, tracked writing, organizing, compiling, reviewing, and monitoring version history in Overleaf projects through an authenticated web session.
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 − 10 = 90. 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 |
|---|---|
| −10 | capability blast radius (critical) — 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
critical Completed toxic-flow trifecta across toolsMTC-FLOW-002
This server (without client built-ins) exposes a complete data-exfiltration chain: download_file → read_file → upload_file. Untrusted input is ingested, private data is read, and it can be sent to an external sink via the agent composing the tools (→). Static analysis proves the primitive exists, not that a specific run will occur.
Fix: Remove one leg of the trifecta: isolate untrusted-input tools from secret-reading tools and from egress tools, or require human approval between them.
Location: flow download_file → read_file → upload_file
high Shell/command execution in server code (dist/auth/browser-login.js)MTC-SRC-002
In the server's implementation (`dist/auth/browser-login.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: rt { spawn } from 'node:child_process'; import { mkdir, rm } from 'node:fs/promises'; import { join } from 'node:path';
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/auth/browser-login.js
medium Tool "write_file" can modify the filesystemMTC-CAP-002
Tool "write_file" can write, overwrite or delete files (keyword "write_file" in tool name). Verify it is scoped to a safe directory.
Fix: Constrain file operations to an explicit, non-sensitive root; reject path traversal.
Location: tool write_file
medium Tool "create_file" can modify the filesystemMTC-CAP-002
Tool "create_file" can write, overwrite or delete files (keyword "create_file" in tool name). Verify it is scoped to a safe directory.
Fix: Constrain file operations to an explicit, non-sensitive root; reject path traversal.
Location: tool create_file
low Mutating tool "write_file" declares no destructiveHintMTC-CAP-005
Tool "write_file" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool write_file
low Mutating tool "create_file" declares no destructiveHintMTC-CAP-005
Tool "create_file" can mutate/egress but declares no destructiveHint. Clients that don't default to spec-safe behavior may not prompt before running it.
Fix: Declare accurate annotations, and gate destructive tools on user confirmation regardless.
Location: tool create_file
Tools 19
Each tool and what it can reach — statically extracted from the published source.
create_filewrites filesdownload_fileingests untrusted inputlist_commentsingests untrusted inputread_filereads sensitive dataupload_filenetwork egresswrite_filewrites filesadd_commentno sensitive capabilityauth_statusno sensitive capabilitycompile_projectno sensitive capabilityget_project_treeno sensitive capability
Show 9 more tools ↓
get_section_contentno sensitive capabilityget_sectionsno sensitive capabilitylist_projectsno sensitive capabilitymanage_entityno sensitive capabilitymonitor_project_historyno sensitive capabilityreply_to_commentno sensitive capabilityset_comment_statusno sensitive capabilitystop_compileno sensitive capabilitywrite_sectionno sensitive capability
Toxic flows 1
Cross-tool combinations that form a data-exfiltration primitive (untrusted input → sensitive source → external sink).
What this scan could not see
- Tools were statically extracted from the published source (19 recovered), not enumerated from a running server. Tool-poisoning, Unicode-smuggling, capability and toxic-flow analysis ran on this inferred surface, but a mis-parsed registration could be missed or mis-attributed, so tool-derived findings are capped below “confirmed”. To grade the real runtime surface, 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 |
|---|---|---|---|---|
v0.1.3 latest |
A 90/100 | 6 | 1.13.0 | 2026-09-07 |
v0.1.2 |
A 90/100 | 6 | 1.13.0 | 2026-09-01 |
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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