cc-changelog

cc-changelog is a skill for Claude Code from oliver-kriska/claude-elixir-phoenix. It costs 50 tokens per session (861 once invoked), scanned A, original, MIT.

A changelog-checking tool for Claude Code, Anthropic’s coding assistant, that compares new Claude Code releases with a plugin. It classifies changes as breaking changes, opportunities, or deprecations and assesses their effect on the plugin.

In plain words
What is it for?
Use it before releases or periodically to fetch new Claude Code versions, review their impact on agents, skills, hooks, and configuration, and reset the last checked version when needed.
Why use it?
It reduces the chance that an updated coding assistant will quietly break the plugin or leave useful new capabilities unused.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions Claude Code.

Good fit Use it before releases or periodically to fetch new Claude Code versions, review their impact on agents, skills, hooks, and configuration, and reset the last checked version when needed.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/oliver-kriska/claude-elixir-phoenix/cc-changelog
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 oliver-kriska/claude-elixir-phoenix --skill cc-changelog
Clone the repo
git clone --depth 1 https://github.com/oliver-kriska/claude-elixir-phoenix

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 cc-changelog

README.md
[![agentmods](https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/cc-changelog/github.svg)](https://agentmods.dev/skills/oliver-kriska/claude-elixir-phoenix/cc-changelog)
Your own site
<a href="https://agentmods.dev/skills/oliver-kriska/claude-elixir-phoenix/cc-changelog"><img src="https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/cc-changelog/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 cc-changelog

Your own site · 80×15
<a href="https://agentmods.dev/skills/oliver-kriska/claude-elixir-phoenix/cc-changelog"><img src="https://agentmods.dev/badge/skills/oliver-kriska/claude-elixir-phoenix/cc-changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 861 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00050 $0.00861
Opus 5 $0.00025 $0.00430
Sonnet 5 $0.00010 $0.00172
Haiku 4.5 $0.00005 $0.00086

Measured 12d ago against content hash a8a372d960cc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

cc-changelog 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 12d 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.

.claude/skills/cc-changelog/SKILL.md · 101 lines

How it starts

The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Code Changelog Assistant

Tracks Claude Code releases against the plugin. Fetches the CC changelog, extracts entries newer than last check, and analyzes impact on plugin components (agents, skills, hooks, config).

Usage

/cc-changelog                  # Check for new CC versions, analyze impact
/cc-changelog --full           # Re-analyze all versions (ignore last check)
/cc-changelog --set=2.1.85     # Reset last checked version (then re-run)

Execution Flow

Step 1: Fetch & Extract New Entries

bash "${CLAUDE_PROJECT_DIR}/scripts/fetch-cc-changelog.sh"

If output starts with STATUS: UP_TO_DATE → report "No new CC versions" and stop.

If STATUS: NEW_VERSIONS → continue with the changelog content below the header.

For --full: run bash "${CLAUDE_PROJECT_DIR}/scripts/fetch-cc-changelog.sh" --all For --set=X: run bash "${CLAUDE_PROJECT_DIR}/scripts/fetch-cc-changelog.sh" --set=X, then re-run without flag.

Step 2: Analyze Impact

Read the new changelog entries. For EACH entry, classify into one of:

Category Meaning Action
BREAKING May break existing plugin functionality Immediate fix required
OPPORTUNITY New CC feature the plugin could use Add to backlog/plan
RELEVANT FIX CC fixed a bug we worked around Check if workaround can be removed
DEPRECATION CC removing something we use Plan migration
INFO Good to know, no action needed Log in memory update

Cross-reference against plugin components using rules in ${CLAUDE_SKILL_DIR}/references/analysis-rules.md.

Step 3: Generate Report

Output a structured report:

## CC Changelog Analysis: v{last_checked} → v{latest}

### BREAKING (action required)
- [version] description → **Impact**: which plugin file/component
  **Fix**: specific action needed

### OPPORTUNITY (new features)
- [version] description → **Use case**: how plugin could benefit
  **Files**: which plugin files to update

### RELEVANT FIX (workaround removal)
- [version] description → **Current workaround**: what we do now
  **Action**: can we simplify?

### DEPRECATION (migration needed)
- [version] description → **We use this in**: file:line
  **Migration**: what to change

### INFO (no action)
- [version] brief summary (collapsed)

Read the full file on GitHub · 101 lines

Files

What ships with it

1 file 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. 12d ago First seen · 101 lines · 50 tokens per session scan A a8a372d960cc

Subscribe to this mod's changes

cc-changelog is a skill published in the GitHub repository oliver-kriska/claude-elixir-phoenix (544 stars, last pushed 2d ago), licensed MIT. It adds 50 tokens to every session and 861 once invoked, about $0.0003 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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