source-code-review

source-code-review is a skill for Claude Code from oscarsterling/clelp-skills. It costs 33 tokens per session (10,103 once invoked), scanned A, original, MIT.

A read-only method for reviewing a web application's source code for security problems. It maps where requests enter the application, checks those paths, and records evidence for findings and dismissals.

In plain words
What is it for?
Use it to review web application code, compare routes with backend settings, rank security findings, and document the reasoning behind the review.
Why use it?
It gives a structured way to look for overlooked entry points and explain why suspected issues are or are not security problems.

Skill for Claude Code

Written for Claude Code: when-to-use in frontmatter. Also seen: positional $N argument.

Good fit Use it to review web application code, compare routes with backend settings, rank security findings, and document the reasoning behind the review.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/oscarsterling/clelp-skills/source-code-review
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 oscarsterling/clelp-skills --skill source-code-review
Clone the repo
git clone --depth 1 https://github.com/oscarsterling/clelp-skills

Made for: Claude Code.

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 source-code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/oscarsterling/clelp-skills/source-code-review/github.svg)](https://agentmods.dev/skills/oscarsterling/clelp-skills/source-code-review)
Your own site
<a href="https://agentmods.dev/skills/oscarsterling/clelp-skills/source-code-review"><img src="https://agentmods.dev/badge/skills/oscarsterling/clelp-skills/source-code-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.

agentmods 80×15 button for source-code-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/oscarsterling/clelp-skills/source-code-review"><img src="https://agentmods.dev/badge/skills/oscarsterling/clelp-skills/source-code-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 10,103 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 $0.00033 $0.10103
Opus 5.5 $0.00013 $0.04041
Sonnet 5.5 $0.00007 $0.02021
Haiku 4.5 $0.00003 $0.01010

Measured 11d ago against content hash 2a6d6bfb57a5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

source-code-review 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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

3. **Command injection:** `grep -rlE "child_process|execa|shelljs|[\"']?shell[\"']?[[:space:]]*:[[:space:]]*true|(^|[^[:alnum:]_.])(exec|execSync|spawn|spawnSync|execFile|execFileSync)[[:space:]]*\(" . --exclude-dir=node
source-code-review/SKILL.md · 319 lines

How it starts

The opening of the file, as written. The whole thing — 319 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Source code review

A manual procedure for reading an application's source the way an attacker would: generate candidate entry points, reconcile them against routing and backend configuration, check each one against a fixed set of questions, and write down why each candidate is or is not a problem. The examples use Next.js App Router, plain Node serverless functions, and Postgres or Supabase. The method carries to other stacks; the grep patterns do not, so rewrite them for yours.

Attribution. This procedure was written after reading deepsec (https://github.com/vercel-labs/deepsec, Apache License 2.0, commit 4fa6722). It is independently written, informed by reading deepsec: the steps, checks, wording, examples and severity rules are our own, and no deepsec source, prompt text, matcher or regular expression is reproduced here. The idea of a census before review, a bypass checklist, and requiring a reason for every dismissal came from reading that project. deepsec's NOTICE file reads, quoted unchanged:

deepsec Copyright 2026 Vercel, Inc. and contributors

This product includes software developed at Vercel, Inc. (https://vercel.com/).

deepsec is not affiliated with this skill and has not reviewed or endorsed it.

What this does and does not cover

It reviews candidate HTTP entry points and their reachable code, direct client access to backend services, and inspected database state. The checks cover authorization, secrets, unsafe output, injection, and the feature-triggered risks below. Record the scope actually inspected.

It does not cover, and a clean report says nothing about:

  • dependencies and known CVEs (run your package auditor);
  • secrets in git history (run a history-aware secret scanner);
  • deployed state not reachable by the read-only catalog queries in step 11: env values, applied migrations, headers, TLS;
  • infrastructure as code, CI workflows, containers, mobile apps;
  • WebSockets, GraphQL resolvers and tRPC routers beyond the subscription check below;
  • client-side DOM code beyond the output checks in step 12.

Read the full file on GitHub · 319 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 · 319 lines · 33 tokens per session scan A 2a6d6bfb57a5

Subscribe to this mod's changes

source-code-review is a skill published in the GitHub repository oscarsterling/clelp-skills (0 stars, last pushed 3d ago), licensed MIT. It adds 33 tokens to every session and 10,103 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-04.

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