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.
npx skills add zeikar/hyperclaude --skill cc-changeloggit clone --depth 1 https://github.com/zeikar/hyperclaudeWrote 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.
[](https://agentmods.dev/skills/zeikar/hyperclaude/cc-changelog)<a href="https://agentmods.dev/skills/zeikar/hyperclaude/cc-changelog"><img src="https://agentmods.dev/badge/skills/zeikar/hyperclaude/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.
<a href="https://agentmods.dev/skills/zeikar/hyperclaude/cc-changelog"><img src="https://agentmods.dev/badge/skills/zeikar/hyperclaude/cc-changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00103 | $0.01606 |
| Opus 5.5 | $0.00041 | $0.00642 |
| Sonnet 5.5 | $0.00021 | $0.00321 |
| Haiku 4.5 | $0.00010 | $0.00161 |
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 23d 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.
How it starts
The opening of the file, as written. The whole thing — 100 lines — stays where its author put it; the contents beside it link to each section on GitHub.
cc-changelog — Claude Code changelog watch (hyperclaude relevance)
Repo-local dev tool (NOT a plugin skill). Compare a stored "last-checked" Claude Code version against the current latest, mine the official changelog for everything in between, and report only what actually touches this repo's surfaces — then optionally advance the stored version so the next run diffs from here.
The value is not "summarize the changelog" — it is mapping generic Claude Code changes onto the specific surfaces of the hyperclaude plugin and verifying impact against the real repo files, exactly as a human maintainer would.
State file
.claude/skills/cc-changelog/.last-checked-version (sibling of this file, gitignored):
a single line holding the last version the maintainer reviewed, e.g. 2.1.201. It is
the diff baseline; it advances only in Step 6.
Procedure
Step 1 — Baseline
The diff baseline is .claude/skills/cc-changelog/.last-checked-version (one X.Y.Z
line) — call it STORED. Step 2's helper reads it automatically; you don't Read it here.
If the file is missing/empty the helper exits 2 — then ask the user which version to
treat as the baseline (do not invent one) and pass it as the script argument.
Step 2 — Fetch and slice the changelog
The full CHANGELOG.md is ~5k lines; do not pull it whole into context. Run the
local helper — it fetches the changelog and prints to stdout only the entries strictly
newer than the baseline (it version-compares, so skipped numbers like 2.1.191→2.1.193 are
handled; no temp file, no cleanup):
node .claude/skills/cc-changelog/get-changelog.mjs # reads .last-checked-version
# or with a user-supplied baseline: node .claude/skills/cc-changelog/get-changelog.mjs 2.1.201
Read the Bash output directly (no Read, no temp file):
- line 1
LATEST=<x.y.z>— the topmost changelog version → this isLATEST. - the rest — the sliced entries, verbatim, newest first (or
(up to date — …)if none).
If the fetch fails (exit 1), fall back to WebFetch on
https://raw.githubusercontent.com/anthropics/claude-code/main/CHANGELOG.md asking for
entries strictly greater than STORED.
What ships with it
2 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.
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.
- 23d ago Changed 90621988e51b
- 1mo ago First seen · 100 lines · 103 tokens per session scan A 8fa7e81578a7
cc-changelog is a skill published in the GitHub repository zeikar/hyperclaude (4 stars, last pushed 9d ago), licensed MIT. It adds 103 tokens to every session and 1,606 once invoked, about $0.0004 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 2026-08-31.
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