What is trailofbits:diff-review?

A command for reviewing code changes specifically for security problems. It compares a pull request, commit, or diff file with an optional baseline version.

Use it to review pull requests, commits, or saved diffs for newly introduced security risks.

It helps catch security issues introduced by a change instead of reviewing the entire codebase every time. This makes security checks part of the normal change-review process.

trailofbits:diff-review — Command for Claude Code by marduk191

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/marduk191/qwen3_mcp

Made for: Claude Code.

Or install differential-review, the plugin that ships this one along with the rest of its 1 skill, 1 command.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/marduk191/qwen3_mcp/diff-review/github.svg)](https://agentmods.dev/commands/marduk191/qwen3_mcp/diff-review)

Your own site

<a href="https://agentmods.dev/commands/marduk191/qwen3_mcp/diff-review"><img src="https://agentmods.dev/badge/commands/marduk191/qwen3_mcp/diff-review/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/marduk191/qwen3_mcp/diff-review"><img src="https://agentmods.dev/badge/commands/marduk191/qwen3_mcp/diff-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 16 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 137 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.

Model	Per session	Once invoked
Fable 5.1	$0.00016	$0.00137
Opus 5.5	$0.00006	$0.00055
Sonnet 5.5	$0.00003	$0.00027
Haiku 4.5	$0.00002	$0.00014

Measured 2mo ago against content hash 4e70c366c06e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

trailofbits:diff-review 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 2mo 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.

skills/differential-review/commands/diff-review.md · 22 lines

What it actually says

Differential Security Review

Arguments: $ARGUMENTS

Parse arguments:

Target (required): PR URL, commit SHA, or diff path
Baseline (optional): --baseline <ref> for comparison reference

Invoke the differential-review skill with these arguments for the full workflow.

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.

2mo ago First seen · 22 lines · 16 tokens per session scan A 4e70c366c06e

Subscribe to this mod's changes

trailofbits:diff-review is a command published in the GitHub repository marduk191/qwen3_mcp (14 stars, last pushed 9mo ago), licensed MIT. It adds 16 tokens to every session and 137 once invoked, about $0.0001 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 2026-08-30.

Code review Security

trailofbits:diff-review next to 6 commands from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
trailofbits:diff-reviewmarduk191/qwen3_mcp	Command	14	9mo ago	MIT	A	16	Claude Code
diff-reviewcoco-research/coco	Command	630	today	Apache-2.0	A	11	Claude Code
review-branchdamusix/atomic-claude	Command	116	yesterday	MIT	A	35	Claude Code
initazrtydxb/procoder	Command	211	today	Apache-2.0	A	16	Claude Code
refactorRchGrav/claudebox	Command	1.2k	1mo ago	MIT	A	9	Claude Code
spec-trace-requirementsrjmurillo/ai-agents	Command	49	today	MIT	A	0	GitHub Copilot
merge-conflict-analysisrjmurillo/ai-agents	Command	49	today	MIT	A	0	GitHub Copilot