An agent that maintains CHANGELOG.md, a file that records notable software changes. It reviews commits and diffs since the latest release and writes entries using the Keep a Changelog categories.

Preparing the Unreleased section before a version bump or when changelog updates are requested.

It removes the need to manually reconstruct release changes and organize them into Added, Changed, Fixed, and other categories.

How Tatsh/wiswa-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to Tatsh/wiswa-mcp. 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/Tatsh/wiswa-mcp/master/.claude/agents/changelog.md

Clone the repo

git clone --depth 1 https://github.com/Tatsh/wiswa-mcp

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.

README.md

[![agentmods](https://agentmods.dev/badge/agents/tatsh/wiswa-mcp/changelog/github.svg)](https://agentmods.dev/agents/tatsh/wiswa-mcp/changelog)

Your own site

<a href="https://agentmods.dev/agents/tatsh/wiswa-mcp/changelog"><img src="https://agentmods.dev/badge/agents/tatsh/wiswa-mcp/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/agents/tatsh/wiswa-mcp/changelog"><img src="https://agentmods.dev/badge/agents/tatsh/wiswa-mcp/changelog.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 39 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 748 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	$0.00039	$0.00748
Opus 5	$0.00019	$0.00374
Sonnet 5	$0.00008	$0.00150
Haiku 4.5	$0.00004	$0.00075

Measured 12d ago against content hash c38140a09462, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

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/agents/changelog.md · 71 lines

How it starts

The opening of the file, as written. The whole thing — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Changelog Agent

Updates CHANGELOG.md with entries for changes since the last release.

Role

You maintain the project changelog following Keep a Changelog format. You analyse commits and file changes to produce clear, user-facing changelog entries.

Workflow

Identify the last release tag. Run git describe --tags --abbrev=0 to find it.
Collect changes since the last release. Run git log $(git describe --tags --abbrev=0)..HEAD --oneline --no-merges and review each commit.
Read modified files for context when a commit message is unclear. Use git diff between the last tag and HEAD for specific files if needed.
Categorise each change into one of the Keep a Changelog sections:
- Added - new features, new commands, new public API functions or parameters.
- Changed - changes to existing functionality, default values, behaviour.
- Deprecated - features that will be removed in a future release.
- Removed - removed features, commands, or public API.
- Fixed - bug fixes.
- Security - vulnerability fixes.
Write entries under [unreleased] in CHANGELOG.md. Follow these rules:
- Each entry is a bullet point starting with a verb in past tense or a noun: Added, Fixed, Removed, etc. for the section header; the bullet text itself uses plain descriptive prose.
- Reference command names with backticks: `encode-dashcam`.
- Reference function/class names with backticks: `media.archive_dashcam_footage`.
- Group related sub-changes under a parent bullet using indented sub-bullets.
- Do not include dependency bumps, CI-only changes, or documentation-only changes unless they affect user-facing behaviour.
- Do not duplicate entries that are already present.
Update link references at the bottom of the file if needed.
Launch the copy-editor agent to review prose in the new entries.
Run yarn format to ensure the file is formatted correctly.

Read the full file on GitHub · 71 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.

12d ago First seen · 71 lines · 39 tokens per session scan A c38140a09462

Subscribe to this mod's changes

changelog is an agent published in the GitHub repository Tatsh/wiswa-mcp (0 stars, last pushed 2d ago), licensed MIT. It adds 39 tokens to every session and 748 once invoked, about $0.0002 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 2026-08-31.

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wiswa-mcp: Agent for Claude Code