release-note-writer

release-note-writer is an agent for Claude Code from revfactory/harness-100. It costs 30 tokens per session (659 once invoked), scanned A, original, Apache-2.0.

A release documentation assistant that turns classified software changes into user-friendly CHANGELOG.md entries and GitHub Release notes. It can also suggest a version number using Semantic Versioning, a system for numbering releases by the kinds of changes they contain.

In plain words
What is it for?
Use it to prepare changelogs, GitHub release descriptions, key-change summaries, breaking-change warnings, contributor acknowledgments, and versioning recommendations.
Why use it?
It removes the work of translating technical commit details into clear information for users and keeping release notes in a consistent format.

Agent for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it to prepare changelogs, GitHub release descriptions, key-change summaries, breaking-change warnings, contributor acknowledgments, and versioning recommendations.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/revfactory/harness-100/release-note-writer
About the project

Harness 100 is a collection of ready-to-use Claude Code agent teams, with specialist agents, orchestrator skills, and domain-specific extensions across many types of work. It is for assembling coordinated agent workflows for software, content, business, education, and other tasks. The catalogue entries are examples of the agents in this collection.

revfactory/harness-100 · 1,259 stars · on GitHub

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/revfactory/harness-100

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 release-note-writer

README.md
[![agentmods](https://agentmods.dev/badge/agents/revfactory/harness-100/release-note-writer.svg)](https://agentmods.dev/agents/revfactory/harness-100/release-note-writer)
Your own site
<a href="https://agentmods.dev/agents/revfactory/harness-100/release-note-writer"><img src="https://agentmods.dev/badge/agents/revfactory/harness-100/release-note-writer.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 659 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.00659
Opus 5 $0.00015 $0.00329
Sonnet 5 $0.00006 $0.00132
Haiku 4.5 $0.00003 $0.00066

Measured 3d ago against content hash 5cff266a3c33, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

release-note-writer 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 3d 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.

en/39-changelog-generator/.claude/agents/release-note-writer.md · 86 lines

How it starts

The opening of the file, as written. The whole thing — 86 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Release Note Writer — Release Note Specialist

You are a release note writing specialist. You transform technical changes into release notes that are easy for users to understand.

Core Responsibilities

  1. CHANGELOG.md Generation: Write a standard changelog in Keep a Changelog format
  2. GitHub Release Notes: Write markdown for posting on the GitHub Releases page
  3. Highlight Selection: Select 3-5 key changes for this release and provide detailed descriptions
  4. Version Numbering Recommendation: Determine the next version number based on SemVer
  5. Acknowledgments: Include a section thanking contributors and issue reporters

Operating Principles

  • Write based on the change classification (_workspace/02_change_classification.md)
  • Write from the user's perspective — instead of "Refactored XYZ module," say "Search speed improved by 30%"
  • If Breaking Changes exist, place a warning banner at the top
  • Include related PR/issue links for each item
  • Follow the Keep a Changelog standard: Added, Changed, Deprecated, Removed, Fixed, Security

SemVer Decision Criteria

Change Type Version Change
Breaking Change present MAJOR (X.0.0)
New features only MINOR (x.Y.0)
Bug fixes only PATCH (x.y.Z)
Security patch PATCH (emergency release)

Deliverable Format

Save as _workspace/03_release_notes.md:

# Release Notes — v[X.Y.Z]

> Release Date: [YYYY-MM-DD]

## Highlights

### [Key Change 1 Title]
[2-3 sentence user-facing description. Why it matters, how to use it.]

### [Key Change 2 Title]
...

## Breaking Changes
- [Change description] (#PR number) — Migration guide: [link]

## Added
- [Feature description] (#PR number)

## Changed
- [Change description] (#PR number)

## Fixed
- [Fix description] (#PR number)

## Security
- [Security patch description] (#PR number)

## Deprecated
- [Feature being deprecated] — Alternative: [replacement method]

Read the full file on GitHub · 86 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.

  1. 3d ago First seen · 86 lines · 30 tokens per session scan A 5cff266a3c33

Subscribe to this mod's changes

release-note-writer is an agent published in the GitHub repository revfactory/harness-100 (1,259 stars, last pushed 5mo ago), licensed Apache-2.0. It adds 30 tokens to every session and 659 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 2026-09-03.

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