aigon-feature-code-review

aigon-feature-code-review is a skill for Claude Code, Codex from jayvee/aigon. It costs 20 tokens per session (2,355 once invoked), scanned A, original, Apache-2.0.

A code-review command that examines another agent's feature implementation and can make targeted fixes. A code review checks whether code meets its specification and is safe and maintainable.

In plain words
What is it for?
Reviewing feature worktrees, comparing changes with the main branch, fixing concrete defects, and documenting issues that need a broader decision.
Why use it?
It adds a separate review pass to catch implementation problems before the feature is accepted, while recording any remaining issues.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/jayvee/aigon/aigon-feature-code-review
Any agent
npx skills add jayvee/aigon --skill aigon-feature-code-review
Clone the repo
git clone --depth 1 https://github.com/jayvee/aigon

Made for: Claude Code, Codex.

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 aigon-feature-code-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/jayvee/aigon/aigon-feature-code-review.svg)](https://agentmods.dev/skills/jayvee/aigon/aigon-feature-code-review)
Your own site
<a href="https://agentmods.dev/skills/jayvee/aigon/aigon-feature-code-review"><img src="https://agentmods.dev/badge/skills/jayvee/aigon/aigon-feature-code-review.svg" alt="Measured on agentmods" height="20"></a>
Per session 20 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,355 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00020 $0.02355
Opus 5 $0.00010 $0.01177
Sonnet 5 $0.00004 $0.00471
Haiku 4.5 $0.00002 $0.00235

Measured 4d ago against content hash 930a43348cdf, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aigon-feature-code-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 4d 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.

.agents/skills/aigon-feature-code-review/SKILL.md · 212 lines

How it starts

The opening of the file, as written. The whole thing — 212 lines — stays where its author put it; the contents beside it link to each section on GitHub.

aigon-feature-code-review

Perform a code review on another agent's implementation, making targeted fixes where needed. Use a different model than the implementer for best results.

You are doing a write-capable review pass, not a read-only review report. Ignore any default "code review means findings-only" behavior for this task; this command is specifically a review-with-fixes workflow.

Your default action is:

  1. identify a concrete issue
  2. patch it in the feature worktree
  3. commit it with fix(review): ...
  4. leave only residual issues in notes

Do not stop at describing a fix if you can safely make it yourself. A findings-only review is valid only when:

  • the implementation is genuinely clean
  • the remaining issue requires a broader architectural or product decision
  • the issue is ambiguous and the correct behavior is not clear from the spec
  • you are blocked by missing context or infrastructure you cannot safely change

Argument Resolution

If no ID is provided or doesn't match an active feature, run aigon feature-list --active, filter to matches, and ask the user.

Step 1: Gather all context (one tool call)

Run this entire block in a single shell execution — do not split it up. It fetches branch info, the full diff, and the implementation log in one shot so you can review immediately without extra round-trips.

You MUST commit review changes to the FEATURE WORKTREE, never to main.

BRANCH=$(git branch --show-current)
FEATURE_BRANCH=$(git branch --list 'feature-$1-*' | head -1 | tr -d ' *')
WORKTREE=$(git worktree list | grep "feature-$1" | awk '{print $1}')
echo "=== WORKSPACE ==="
echo "Current: $BRANCH  Feature: $FEATURE_BRANCH  Worktree: $WORKTREE"
echo "=== DIFF ==="
git diff "main...${FEATURE_BRANCH:-HEAD}"
echo "=== IMPLEMENTATION LOG ==="
cat docs/specs/features/logs/feature-$1-*-log.md 2>/dev/null || echo "(no log found)"
aigon agent-status reviewing

The spec body was printed inline by the launching CLI — use that copy for acceptance criteria.

Read the full file on GitHub · 212 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. 4d ago First seen · 212 lines · 20 tokens per session scan A 930a43348cdf

Subscribe to this mod's changes

aigon-feature-code-review is a skill published in the GitHub repository jayvee/aigon (24 stars, last pushed 2d ago), licensed Apache-2.0. It adds 20 tokens to every session and 2,355 once invoked, about $0.0001 per session on Opus 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.

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