supply-chain-security-check

supply-chain-security-check is a cursor rule for Cursor from gleicon/mcp-osv. It costs 910 tokens per session, scanned A, original, no licence file.

A dependency-checking rule for verifying where external software packages come from before adding them. It names npm, crates.io, PyPI, and GitHub as sources to check.

In plain words
What is it for?
Use it before incorporating JavaScript, TypeScript, Rust, or Python dependencies, or source code from GitHub.
Why use it?
It reduces the risk of adding a package from an unverified or misleading source.

Cursor rule for Cursor

Written for Cursor: a Cursor rule (.mdc).

Good fit Use it before incorporating JavaScript, TypeScript, Rust, or Python dependencies, or source code from GitHub.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/gleicon/mcp-osv/supply-chain-security-check
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/gleicon/mcp-osv

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for supply-chain-security-check

README.md
[![agentmods](https://agentmods.dev/badge/rules/gleicon/mcp-osv/supply-chain-security-check.svg)](https://agentmods.dev/rules/gleicon/mcp-osv/supply-chain-security-check)
Your own site
<a href="https://agentmods.dev/rules/gleicon/mcp-osv/supply-chain-security-check"><img src="https://agentmods.dev/badge/rules/gleicon/mcp-osv/supply-chain-security-check.svg" alt="Measured on agentmods" height="20"></a>
Per session 910 This file is loaded in full into every session.
When invoked 910 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00910 $0.00910
Opus 5 $0.00455 $0.00455
Sonnet 5 $0.00182 $0.00182
Haiku 4.5 $0.00091 $0.00091

Measured 8d ago against content hash 4d04b560c2a0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

supply-chain-security-check scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

supply-chain-security-check.mdc · 149 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 8d ago First seen · 149 lines · 910 tokens per session scan A 4d04b560c2a0

Subscribe to this mod's changes

supply-chain-security-check is a cursor rule published in the GitHub repository gleicon/mcp-osv (15 stars, last pushed 8mo ago), with no licence file. It adds 910 tokens to every session, about $0.0046 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.