What is add-to-changelog?

A command that adds an entry to a project's CHANGELOG.md using the Keep a Changelog format. A changelog records notable changes between software versions, while semantic versioning is a standard way to label those versions.

Use it to add versioned entries for changes such as new features, fixes, or other release-note categories while preserving the file's format.

It removes repetitive editing and keeps release notes organised under the right version and change category. It can also create the changelog structure when the file is missing.

add-to-changelog — Command for Claude Code by kellykampen

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.

Clone the repo

git clone --depth 1 https://github.com/kellykampen/agent-skills

Made for: Claude Code.

Or install agent-skills, the plugin that ships this one along with the rest of its 25 skills, 7 commands.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/kellykampen/agent-skills/add-to-changelog/github.svg)](https://agentmods.dev/commands/kellykampen/agent-skills/add-to-changelog)

Your own site

<a href="https://agentmods.dev/commands/kellykampen/agent-skills/add-to-changelog"><img src="https://agentmods.dev/badge/commands/kellykampen/agent-skills/add-to-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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/kellykampen/agent-skills/add-to-changelog"><img src="https://agentmods.dev/badge/commands/kellykampen/agent-skills/add-to-changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 14 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 684 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 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.

Model	Per session	Once invoked
Fable 5.1	$0.00014	$0.00684
Opus 5	$0.00007	$0.00342
Sonnet 5	$0.00003	$0.00137
Haiku 4.5	$0.00001	$0.00068

Measured 11d ago against content hash cfaf4cfcf05d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

add-to-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 11d 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.

commands/add-to-changelog.md · 94 lines

How it starts

The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.