How to automate changelog generation from your commits and PRs

Keeping a changelog up to date by hand is the kind of task that always loses to shipping the next feature. The fix is to automate it. This guide covers how to automate changelog generation from your Git history, and the trade-offs of each approach.

Why automate your changelog?

A manual changelog depends on a person remembering to update it after every release. That person is busy, so the changelog goes stale, and a stale changelog is worse than none. Automation removes the human bottleneck and keeps your changelog current by default.

Approach 1: Generate from commit messages

Tools can parse your Git commit history and assemble a changelog from it. This works best when your team follows a convention like Conventional Commits, where each message is prefixed with a type such as feat: or fix:.

• Pros: Zero extra writing; runs in CI.
• Cons: Commit messages are written for developers, so the output reads like a technical log, not a customer update.

Approach 2: Generate from pull requests

Pull requests carry more context than individual commits — a title, a description, and a discussion. Generating from merged PRs produces a higher-level summary of what actually shipped.

• Pros: Closer to a human narrative; captures intent.
• Cons: Still needs editing to become truly customer-facing.

Approach 3: AI-written, customer-facing updates

The newest approach uses an AI agent to read your merged pull requests and write the changelog in plain language — translating engineering work into the outcome a customer cares about.

• Pros: Reads like something a person wrote; minimal editing.
• Cons: You want a tool that lets you review and tweak before publishing.

Don't lose the human review step

Automation should draft, not publish blindly. The best workflow generates a draft automatically, then lets a human glance at it and hit publish.

Automate the writing, keep the judgment.

Putting it together

Changelog Generator follows the third approach: it reads your merged pull requests on a schedule, drafts a clear customer-facing update, and lets you review it before it goes live. You get an always-current changelog without writing it yourself.