AI Pull Request Generator
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How many pull requests in your repository have a description that is just the branch name? It is the most skipped step in the whole workflow, and the one that costs the reviewer most. They open a diff of forty files with no statement of intent, and the first ten minutes of review go on working out what the change is supposed to do.
Short answer: AI Pull Request Generator turns a diff or a set of notes into a pull request description, covering what changed, why, how it was tested and what a reviewer should look at closely.
What is AI Pull Request Generator?
It is a free page that writes pull request descriptions. Paste the diff or a summary of your changes, and the output is the description: a summary a reviewer can read in twenty seconds, the reasoning behind the change, the testing you did, and the parts that deserve scrutiny.
The same page also produces commit messages, changelog entries and release notes through the Output Type setting, which makes sense because they all start from the same source material. One diff, several audiences.
Note The diff shows what changed. It cannot show why, and why is the part reviewers need. Add two sentences of intent to your paste and the description improves more than any option setting could manage.
Why Use AI Pull Request Generator?
Because a good description makes review faster and better, and everyone knows this and skips it anyway. The reason is not laziness. It is that writing a summary of your own change is genuinely awkward when you have been inside it for two days and everything seems obvious.
Starting from generated text solves the blank page problem. You edit rather than compose, which takes a minute instead of ten, and the parts you would have forgotten are already there.
What works well
- Turns a diff into a readable summary in one step.
- Prompts for the sections people forget, such as testing and risk.
- Follows your team's template when you describe it.
- Free, so writing a proper description stops being a trade against time.
What to watch for
- It infers intent from code, and sometimes infers it wrongly.
- A long diff produces a long description unless you set Length.
- Generated confidence about testing you did not do is a real risk.
- Diffs can contain secrets, so check before pasting.
Who Should Use It?
- Developers who open several pull requests a week and want them read properly.
- Teams whose review turnaround is slow because descriptions are thin.
- Contributors to projects where maintainers expect a specific template.
- Anyone whose first language is not the one the repository is written in.
- Maintainers writing the description for someone else's change during a handover.
How Does AI Pull Request Generator Work?
You paste the change and it writes the description. Three inputs decide the quality: the diff itself, a sentence about why the change exists, and a note on what you tested. The first is mechanical, the second and third are what make the result honest.
- Open AI Pull Request Generator. Free, no account needed.
- Paste the diff, or a summary of it if the diff is very large.
- Add why the change exists, including the ticket or the report behind it.
- Say what you tested and what you did not.
- Set Output Type to PR Description and Length to match your team's habit.
- Generate, then edit the result rather than posting it unread.
Key Features
Summary a reviewer can scan
The top of the description says what the change does before any detail arrives.
Sections on request
Include Sections adds testing, risk and rollout headings rather than one block of prose.
Points reviewers at the risk
The parts worth close attention are called out instead of being buried in the diff.
Several outputs from one diff
The same paste produces a commit message, a changelog entry or release notes.
Length you control
Short for a one line fix, detailed for a change that touches several areas.
Best Use Cases
| Change type | Settings | What to add yourself |
|---|---|---|
| Small bug fix | Length Short, Include Sections off | The symptom and how you reproduced it |
| Feature across several files | Length Detailed, Include Sections on | What is out of scope and deliberately not done |
| Refactor with no behaviour change | Tone Professional, Detail Level high | Evidence that behaviour is unchanged |
| Dependency or infrastructure update | Include Sections on | The rollback plan and what breaks if it fails |
Reviewing someone else's pull request is the other half of this workflow, and AI Code Review Comment Writer helps with phrasing feedback that lands well.
Advanced Options Guide
Ten controls sit behind the accordion, shared across the git and documentation tools here.
| Option | What it controls | When to change it | Suggested starting point |
|---|---|---|---|
| Output Type | Auto, Commit Message, PR Description, README, Changelog or Release Notes. | Set it explicitly rather than relying on Auto. | PR Description. |
| Convention | Conventional Commits, Plain, Detailed, Concise or Team Standard. | Team Standard when you describe your template in Custom Instructions. | Team Standard if you have one, Detailed otherwise. |
| Tone / Detail | Concise, Standard, Detailed or Professional. | Professional for an open source contribution or an external repository. | Standard. |
| Length | Short, Normal or Detailed. | Match the size of the change, not the size of the diff. | Normal. |
| Follow Convention | Enforces the chosen convention strictly. | Any repository where a bot checks the format. | On. |
| Include Sections | Adds headings such as testing, risk and rollout. | Anything beyond a trivial fix. | On. |
| Add Emojis | Adds emoji markers to headings or entries. | Only if your repository already does this. | Off. |
| Include Examples | Adds usage examples where the change affects an interface. | API and library changes. | On for anything others call. |
| Detail Level | Slider from 1 to 100 for depth within the chosen length. | High when the reasoning matters more than the code. | Mid. |
| Custom Instructions | Free text up to 1000 characters for your template. | Required headings, ticket format, wording your team uses. | A concrete line such as "use our headings: Context, Change, Testing, Risk. Reference the ticket as PROJ-123 on the first line". |
Example Outputs
Take a change that fixes a bug where discount codes could be applied twice. You paste the diff, add that a customer reported it, and note that you added a test plus a database constraint. With sections on and Length Normal, the description comes back structured.
Fix duplicate discount code redemption (PROJ-482)
Context
A customer reported applying the same code twice on one order. The check
ran in application code before insert, so two concurrent requests could
both pass it.
Change
Added a unique constraint on (order_id, discount_code_id) and moved the
check to catch the constraint violation instead of querying first.
Removed the now redundant pre check in CartService.
Testing
Added a test that fires two concurrent redemptions and asserts one fails.
Verified the existing single redemption path still returns the same
message. Not tested against production data volume.
Risk and rollout
The migration adds a unique index on a table with roughly 2 million rows.
Created concurrently so it does not lock. If duplicates already exist the
index creation will fail, so the duplicate check query is included below
and should be run first.The last paragraph is what a reviewer most needs and what a hand written description usually omits. Note also the honest line in testing about what was not covered, which came from the notes rather than from the diff.
Important Never let a generated description claim testing you did not do. It writes from what you tell it, and a confident testing section that nobody wrote a test for is worse than no section at all.
Tips & Common Mistakes
- ✅ Intent is written by you, not inferred from the diff.
- ✅ The testing section reflects what actually ran.
- ✅ Risk and rollback are stated for anything touching data or infrastructure.
- ✅ Length matches the change rather than the file count.
- ✅ The diff was checked for secrets before pasting.
- ✅ The description is edited before posting, not published unread.
The mistakes are easy to fall into. Pasting a diff with no context, which produces an accurate description of what changed and no explanation of why. Accepting a long description for a small change, which trains reviewers to skim. Letting generated text claim coverage you do not have. And leaving out what you deliberately did not do, which is often the question a reviewer asks first.
Pro tip Generate the commit message from the same paste by switching Output Type. Having the commit and the description agree is a small thing that makes the history far easier to read a year later.
Comparison Table
| Approach | Time it takes | Consistency | Best for |
|---|---|---|---|
| Branch name as the description | None | Consistently unhelpful | Nothing |
| Writing it by hand | Five to ten minutes | Depends on the day | Changes you need to argue for |
| A template with empty headings | Fast to add, slow to fill | Good, when filled in | Teams with strong review habits |
| AI Pull Request Generator | About a minute including edits | Consistent across the team | Making a good description the default |
AIToolsay gives each job a page that already knows what arrives in the prompt box, which here is a diff or a set of notes. The options carry a convention setting for repositories with a format bot, a length control that matches the description to the change, and a free text field for your team's template. The model selector lets a second engine summarise the same diff when the first version misses the point of the change. It is free with no account step, so writing a proper description stops competing with getting the work merged. Session history keeps each version under the result while you pick the right length. The rest of the development tooling on AIToolsay is arranged the same way, so the commit message, the changelog and the release notes from the same change are each a page away.
Frequently Asked Questions
Is AI Pull Request Generator free?
Yes, with no account and no limit on how many descriptions you generate.
What should I paste?
The diff, plus two sentences on why the change exists and what you tested. The diff alone produces an accurate summary with no reasoning in it.
Can it follow our template?
Yes. Set Convention to Team Standard and describe the headings in Custom Instructions. Ticket reference formats belong there too.
My diff is enormous. What then?
Paste a summary of the changes by area instead of the whole thing. A very large diff is also a signal that the pull request would be easier to review if it were split.
Will it write the commit message too?
Yes. Switch Output Type to Commit Message and keep the same paste, and set Convention to Conventional Commits if your repository uses that format.
Is it safe to paste a diff?
Check it for credentials, tokens and personal data first. Diffs sometimes include configuration files, and a secret in a diff is a secret you need to rotate.
Try it on your next change and spend the minute you save adding the sentence about why. Reviewers notice, and the description you leave behind is what explains the code to whoever reads it in two years. The Telegram community is a reasonable place to compare review practices, and the newsletter or push notifications will let you know when new development tools arrive.
Let AI Speak.
Sabir
Founder of AIToolsay and a passionate AI enthusiast dedicated to building practical, user-friendly AI tools that simplify everyday tasks.
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