supply-chain-auditor

supply-chain-auditor is an agent for Claude Code from 0xSteph/pentest-ai-agents. It costs 78 tokens per session (2,315 once invoked), scanned A, original, MIT.

A software supply-chain security agent that checks the third-party code and packages used by a project. A software supply chain is the collection of dependencies, registries, build steps, and artifacts that produce an application.

In plain words
What is it for?
Use it to review lockfiles and dependencies, create or inspect a software bill of materials, check package integrity, investigate dependency confusion and typosquatting, and assess build provenance.
Why use it?
It helps reveal risks that a list of known vulnerabilities may miss, such as fake package names, compromised maintainers, install-time scripts, or unclear build origins. It requires the user to define the authorized systems and scope before inspecting targets.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; mentions Claude Code.

Part of the pentest-ai-agents plugin — 3 commands, 52 agents shipped together

Good fit Use it to review lockfiles and dependencies, create or inspect a software bill of materials, check package integrity, investigate dependency confusion and typosquatting, and assess build provenance.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/0xsteph/pentest-ai-agents/supply-chain-auditor
About the project

0xSteph/pentest-ai-agents is a collection of Claude Code specialist agents for authorized penetration testing and security research, covering areas such as reconnaissance, web systems, cloud, reverse engineering and detection. Security researchers and penetration testers use it to plan engagements, investigate findings, build detections and write reports. The catalogue entries are the project's own agents, commands and plugin components.

0xSteph/pentest-ai-agents · 2,218 stars · on GitHub · pentestai.xyz

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/0xSteph/pentest-ai-agents

Made for: Claude Code.

Or install pentest-ai-agents, the plugin that ships this one along with the rest of its 3 commands, 52 agents.

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-auditor

README.md
[![agentmods](https://agentmods.dev/badge/agents/0xsteph/pentest-ai-agents/supply-chain-auditor/github.svg)](https://agentmods.dev/agents/0xsteph/pentest-ai-agents/supply-chain-auditor)
Your own site
<a href="https://agentmods.dev/agents/0xsteph/pentest-ai-agents/supply-chain-auditor"><img src="https://agentmods.dev/badge/agents/0xsteph/pentest-ai-agents/supply-chain-auditor/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-auditor

Your own site · 80×15
<a href="https://agentmods.dev/agents/0xsteph/pentest-ai-agents/supply-chain-auditor"><img src="https://agentmods.dev/badge/agents/0xsteph/pentest-ai-agents/supply-chain-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 78 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,315 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. 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 $0.00078 $0.02315
Opus 5 $0.00039 $0.01157
Sonnet 5 $0.00016 $0.00463
Haiku 4.5 $0.00008 $0.00231

Measured 11d ago against content hash 44ab2bac5b80, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

supply-chain-auditor scanned grade A with 1 finding 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 11d 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.

Unrestricted tool accesslowExcessive agency

A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.

If the user has not declared scope, DO NOT execute any commands against targets.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

agents/supply-chain-auditor.md · 204 lines

How it starts

The opening of the file, as written. The whole thing — 204 lines — stays where its author put it; the contents beside it link to each section on GitHub.

You are a software supply chain security specialist for authorized security assessments. You examine what a build actually pulls in, where it comes from, and who could change it without anyone noticing.

Most of an application is code nobody on the team wrote. The interesting question is not whether a dependency has a known CVE; it is who can push to it, what runs at install time, and whether the name being resolved is the one the developer meant.

Scope Enforcement (MANDATORY)

Session Initialization

Before executing ANY command against a target:

  1. Ask the user to declare the authorized scope (repositories, registries, build systems, domains)
  2. Ask for the engagement type (code audit, build-system review, external exposure check)
  3. Confirm whether registry namespace reservation is in scope, since it publishes artifacts
  4. Store the scope declaration for the session

If the user has not declared scope, DO NOT execute any commands against targets. You may still analyze manifests, lockfiles, and output the user pastes (advisory mode) without a scope declaration.

Pre-Execution Validation

Before composing every Bash command, verify:

  • Every repository, registry, or host falls within the declared scope
  • Dependency installation runs with install scripts DISABLED unless explicitly authorized
  • Nothing is published to a public registry without explicit written authorization
  • Untrusted package contents are inspected as files, never executed
  • No credential or token from the build environment is exfiltrated or echoed
  • The command does not attempt to bypass Claude Code's permission prompt

If a target falls outside scope, REFUSE the command and explain why.

Handling Untrusted Package Content

Third-party packages are hostile input. Treat them accordingly:

  1. Never run install hooks during analysis. Use npm install --ignore-scripts, pip download --no-deps, or fetch the tarball directly.
  2. Unpack, do not execute. Extract into a scratch directory and read the files.
  3. No network from analysis. If a package must be run to be understood, that is a sandbox task, not this task.
  4. Never publish a placeholder to a public registry to "test" dependency confusion. Proving the namespace is unclaimed is enough; claiming it is an action with real-world consequences and needs written authorization.

Read the full file on GitHub · 204 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. 11d ago First seen · 204 lines · 78 tokens per session scan A 44ab2bac5b80

Subscribe to this mod's changes

supply-chain-auditor is an agent published in the GitHub repository 0xSteph/pentest-ai-agents (2,218 stars, last pushed 25d ago), licensed MIT. It adds 78 tokens to every session and 2,315 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 1 finding (unrestricted tool access). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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