supply-chain

supply-chain is a skill for Claude Code from nitinjain999/platform-skills. It costs 116 tokens per session (2,815 once invoked), scanned A, original, Apache-2.0.

A software supply-chain security toolkit for checking code builds and container images. It covers image signing, software bills of materials (lists of included components), vulnerability checks, build records, and rules that block untrusted images from running.

In plain words
What is it for?
Use it to review a CI/CD pipeline, sign container images, create and attest an SBOM, scan for vulnerabilities, create SLSA Level 2 build provenance, or enforce image-signing rules in Kubernetes.
Why use it?
It helps reduce the risk of tampered code, known vulnerable components, or unverified containers reaching production. It also makes security checks part of the build and deployment process.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter.

Part of the platform-skills plugin — 53 skills, 1 agent shipped together

Good fit Use it to review a CI/CD pipeline, sign container images, create and attest an SBOM, scan for vulnerabilities, create SLSA Level 2 build provenance, or enforce image-signing rules in Kubernetes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nitinjain999/platform-skills/supply-chain
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.

Any agent
npx skills add nitinjain999/platform-skills --skill supply-chain
Clone the repo
git clone --depth 1 https://github.com/nitinjain999/platform-skills

Made for: Claude Code.

Or install platform-skills, the plugin that ships this one along with the rest of its 53 skills, 1 agent.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/nitinjain999/platform-skills/supply-chain/github.svg)](https://agentmods.dev/skills/nitinjain999/platform-skills/supply-chain)
Your own site
<a href="https://agentmods.dev/skills/nitinjain999/platform-skills/supply-chain"><img src="https://agentmods.dev/badge/skills/nitinjain999/platform-skills/supply-chain/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for supply-chain

Your own site · 80×15
<a href="https://agentmods.dev/skills/nitinjain999/platform-skills/supply-chain"><img src="https://agentmods.dev/badge/skills/nitinjain999/platform-skills/supply-chain.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,815 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original 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 $0.00116 $0.02815
Opus 5.5 $0.00046 $0.01126
Sonnet 5.5 $0.00023 $0.00563
Haiku 4.5 $0.00012 $0.00281

Measured today against content hash c49bb140c0e1, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

supply-chain 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 today.

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.

skills/supply-chain/SKILL.md · 258 lines

How it starts

The opening of the file, as written. The whole thing — 258 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Secure the software supply chain — from the build pipeline to running containers.


Interactive Wizard (fires when no arguments are provided)

When invoked with no arguments, ask before proceeding:

Q1 — Mode?

What do you need?
  1. audit    — review an existing CI/CD pipeline for supply chain security gaps
  2. sign     — set up keyless image signing with Cosign (Sigstore/Rekor, no key management)
  3. sbom     — generate and attest an SBOM with Syft
  4. scan     — add a CVE vulnerability gate with Trivy or Grype
  5. enforce  — write a Kyverno policy to block unsigned images at admission
  6. slsa     — generate a SLSA Level 2 provenance workflow

Enter 1–6 or mode name:

Q2 — Context (after mode selected, one at a time):

  • audit: Paste your GitHub Actions workflow file(s) or describe your current CI/CD pipeline:
  • sign: Which container registry? (ECR / GHCR / Docker Hub / other):
  • sbom: Which image and registry? (e.g. ghcr.io/org/image):
  • scan: Which scanner preference? Trivy (recommended) or Grype — or no preference:
  • enforce: Which registry or image prefix should the policy cover? (e.g. ghcr.io/myorg/*):
  • slsa: Which registry and repo? (e.g. ghcr.io/org/image from github.com/org/repo):

Then proceed into the relevant mode below.


Mode: audit

Review an existing CI/CD pipeline and cluster admission configuration for supply chain security gaps.

Steps:

  1. Ask for or read: the GitHub Actions workflow file(s), any existing image scanning steps, and any Kyverno/OPA admission policies
  2. Classify gaps by severity:
    • Critical: images pushed without signing, no CVE gate, unsigned images admitted to cluster
    • High: SBOM not generated or not attested, severity gate only on CRITICAL (misses HIGH)
    • Medium: action versions pinned to tag not SHA, no SLSA provenance
  3. Output a prioritised gap list:
    [CRITICAL] No image signing — any image can be admitted to the cluster
    [CRITICAL] No CVE severity gate — vulnerable images pass CI
    [HIGH]     No SBOM attestation — cannot audit what is running
    [MEDIUM]   Action versions pinned to tag, not SHA
    
  4. Recommend the fix order: sign → scan-gate → SBOM → enforce → SLSA

Read the full file on GitHub · 258 lines

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. today Changed · +2 lines c49bb140c0e1
  2. 6d ago First seen · 256 lines · 116 tokens per session scan A f83d2f977880

Subscribe to this mod's changes

supply-chain is a skill published in the GitHub repository nitinjain999/platform-skills (70 stars, last pushed today), licensed Apache-2.0. It adds 116 tokens to every session and 2,815 once invoked, about $0.0005 per session on Opus 5.5. 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 2026-10-12.

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