deadeye-guard

deadeye-guard is a skill for Claude Code from deepaksinghcs14/deadeye-cc. It costs 54 tokens per session (2,736 once invoked), scanned B, original, MIT.

A security review of the code changed in a Git version-control diff. It checks for issues such as injection attacks, exposed secrets, incorrect access controls, cryptography problems, and vulnerable dependencies.

In plain words
What is it for?
It is for checking a working or staged change before it is merged or released.
Why use it?
It focuses security checks on the code being changed, so developers can find risks without reviewing the entire repository.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the deadeye plugin — 10 skills, 3 commands, 7 hooks shipped together

Good fit It is for checking a working or staged change before it is merged or released.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/deepaksinghcs14/deadeye-cc/deadeye-guard
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 deepaksinghcs14/deadeye-cc --skill deadeye-guard
Clone the repo
git clone --depth 1 https://github.com/deepaksinghcs14/deadeye-cc

Made for: Claude Code.

Or install deadeye, the plugin that ships this one along with the rest of its 10 skills, 3 commands, 7 hooks.

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 deadeye-guard

README.md
[![agentmods](https://agentmods.dev/badge/skills/deepaksinghcs14/deadeye-cc/deadeye-guard/github.svg)](https://agentmods.dev/skills/deepaksinghcs14/deadeye-cc/deadeye-guard)
Your own site
<a href="https://agentmods.dev/skills/deepaksinghcs14/deadeye-cc/deadeye-guard"><img src="https://agentmods.dev/badge/skills/deepaksinghcs14/deadeye-cc/deadeye-guard/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 deadeye-guard

Your own site · 80×15
<a href="https://agentmods.dev/skills/deepaksinghcs14/deadeye-cc/deadeye-guard"><img src="https://agentmods.dev/badge/skills/deepaksinghcs14/deadeye-cc/deadeye-guard.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,736 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 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 $0.00054 $0.02736
Opus 5 $0.00027 $0.01368
Sonnet 5 $0.00011 $0.00547
Haiku 4.5 $0.00005 $0.00274

Measured today against content hash 517ffe063f60, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade B, and why

deadeye-guard scanned grade B with 2 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.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

not a SHA), a mutable Docker base image (`:latest`), or a `curl | sh`

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

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

not a SHA), a mutable Docker base image (`:latest`), or a `curl | sh`
skills/deadeye-guard/SKILL.md · 187 lines

How it starts

The opening of the file, as written. The whole thing — 187 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Deadeye Guard

Review ONLY the changed code for security exposures. Nothing else: the other three lenses (/deadeye-review) and lean-lens over-engineering specifically are not this skill's job.

This is the deep, dedicated security pass: deeper than the security lens /deadeye-review//deadeye-pr run alongside their other lenses, and the one that reads around the hunk, verifies before reporting, and runs real dependency auditors where they're installed. It's also the pass behind coder mode's live Edit/Write advisory: that advisory is a fast regex reminder on the text just written; this skill does the deep read.

Scope

Get the diff with git diff (or git diff --staged if the user says staged, or git diff <ref> for a named base). Read the changed hunks plus enough surrounding context to judge a trust boundary — "is this input actually validated" often requires seeing the caller.

  • Empty diff (nothing changed or staged): say so plainly and stop — do not substitute a different scope.
  • Not a git repo: ask the user which files to review.
  • Diff-scoped by design, not repo-wide — a whole-repo sweep would re-read everything into context for exposures that haven't changed; that's what native auditors and periodic CI scanning are for.

Verify before reporting

Before claiming a sanitizer, an authz check, or input validation is MISSING, grep OUTSIDE the diff AND follow the value into the callee — a base class, a caller that guards, or the deeper function it's handed to — the real guard often lives one call down, not just in middleware or a framework-level decorator. An unguarded-looking handler whose auth actually lives in a router Use() call, or one call deeper, is a false positive, and one wrong finding erodes trust in all of them. An authz claim needs a concrete input that reaches the sink, or drop it.

Every finding carries its proof. Append a proof: clause naming the concrete thing in THIS repo that makes the finding true — the caller you traced, the grep that came back empty, the auditor line. A finding you cannot prove from the code in front of you is a guess; drop it.

Read the full file on GitHub · 187 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 · +7 lines 517ffe063f60
  2. 5d ago Changed · +69 lines · +29 tokens per session scan A → B 8d2dd12cdae1
  3. 10d ago First seen · 111 lines · 25 tokens per session scan A b817ed2cdb04

Subscribe to this mod's changes

deadeye-guard is a skill published in the GitHub repository deepaksinghcs14/deadeye-cc (5 stars, last pushed today), licensed MIT. It adds 54 tokens to every session and 2,736 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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