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frontend: Skill for Claude Code

.agents/skills/review-changes/SKILL.md

review-changes is a skill for Claude Code from blockscout/frontend. It costs 43 tokens per session (2,983 once invoked), scanned A, original, no licence file.

A code-review workflow that checks a change for matching its specification, following repository rules, and working correctly. It posts findings on a pull request or reports them in chat when no pull request exists.

In plain words
What is it for?
Use it to review pull requests or other code changes against requirements, repository standards, and correctness.
Why use it?
It catches different kinds of review problems separately, so missing requirements, project-rule violations, and incorrect behavior are less likely to be overlooked.

Skill for Claude Code

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is blockscout/frontend's own configuration. It tells Claude Code how to work on frontend itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything frontend configures →

not rated 310repo changed 20d ago A scan 43 tokens custom licence
View source ↗ blockscout/frontend eth.blockscout.com
Reuse

Borrowing it

Nothing to install: this file belongs to blockscout/frontend. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/blockscout/frontend/main/.agents/skills/review-changes/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/blockscout/frontend

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 review-changes

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/blockscout/frontend/review-changes"><img src="https://agentmods.dev/badge/skills/blockscout/frontend/review-changes.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,983 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 unknown 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 $0.00043 $0.02983
Opus 5.5 $0.00017 $0.01193
Sonnet 5.5 $0.00009 $0.00597
Haiku 4.5 $0.00004 $0.00298

Measured 20d ago against content hash 6181fb18749c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

review-changes 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 20d 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/review-changes/SKILL.md · 212 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 20d ago Changed 6181fb18749c
  2. 22d ago Changed · -1 lines 97afeb081ed2
  3. 1mo ago Changed · +18 lines · +5 tokens per session 3de6f195b55a
  4. 1mo ago Changed 1575d36619ef
  5. 1mo ago Changed · -35 lines · -9 tokens per session 171753cb19f8
  6. 2mo ago First seen · 230 lines · 47 tokens per session scan A 76129f18344b

Subscribe to this mod's changes

review-changes is a skill published in the GitHub repository blockscout/frontend (310 stars, last pushed yesterday), with no licence file. It adds 43 tokens to every session and 2,983 once invoked, about $0.0002 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 2026-09-03.

Code reviewblockchainethereumexplorer
Related

review-changes compared with skills from other repositories

review-changes next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
review-changesblockscout/frontendSkill310yesterdaynoneA43Claude Code
fix-pr-reviewhiromaily/go-crypto-walletSkill1286mo agoMITA26Claude Code
analyzing-ethereum-smart-contract-vulnerabilitiesmukul975/Anthropic-Cybersecurity-SkillsSkill36k2mo agoApache-2.0A49Claude Code
foundry-testingPaulRBerg/foundry-templateSkill6427d agoMITA64Codex
analyzing-ethereum-smart-contract-vulnerabilitiesxalgorix/xalgorixSkill1.3kyesterdayApache-2.0A49Claude Code, Codex
fork-ancestryPlamenTSV/plamenSkill3121mo agoMITA31Claude Code, Codex
go-concurrency-safetyPlamenTSV/plamenSkill3121mo agoMITA40Claude Code, Codex