feat(git): enforce Conventional Commits format in commit message prompt - #2123

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pedrokpp:feat/conventional-commits-prompt
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feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

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@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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@pedrokpp

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Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

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This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

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Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

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Choose a reason for hiding this comment

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Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Add option to make commit messages follow Conventional style including scopes

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@pedrokpp@fazulk@juliusmarminge
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Skip to content

feat(git): enforce Conventional Commits format in commit message prompt - #2123

Closed
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
Closed

feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

Conversation

@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
@coderabbitai

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Review profile: CHILL

Plan: Pro

Run ID: 0d82ba1a-18a8-48f9-9822-5a37db9716cd

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@pedrokpp

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ContributorAuthor

Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

Copy link
Copy Markdown
ContributorAuthor

This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

Copy link
Copy Markdown
Contributor

Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

Copy link
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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Successfully merging this pull request may close these issues.

Add option to make commit messages follow Conventional style including scopes

3 participants

@pedrokpp@fazulk@juliusmarminge
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix"); } } catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

feat(git): enforce Conventional Commits format in commit message prompt - #2123

Closed
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
Closed

feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

Conversation

@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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@pedrokpp

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ContributorAuthor

Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

Copy link
Copy Markdown
ContributorAuthor

This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

Copy link
Copy Markdown
Contributor

Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Choose a reason for hiding this comment

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Add option to make commit messages follow Conventional style including scopes

3 participants

@pedrokpp@fazulk@juliusmarminge
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms"); } } catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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feat(git): enforce Conventional Commits format in commit message prompt - #2123

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pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
Closed

feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
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pedrokpp:feat/conventional-commits-prompt

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@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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@pedrokpp

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Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

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This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

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Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

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Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Add option to make commit messages follow Conventional style including scopes

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@pedrokpp@fazulk@juliusmarminge
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links"); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + '
Skip to content

feat(git): enforce Conventional Commits format in commit message prompt - #2123

Closed
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
Closed

feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

Conversation

@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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⚙️ Run configuration

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Review profile: CHILL

Plan: Pro

Run ID: 0d82ba1a-18a8-48f9-9822-5a37db9716cd

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

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@pedrokpp

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ContributorAuthor

Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

Copy link
Copy Markdown
ContributorAuthor

This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

Copy link
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Contributor

Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

Copy link
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Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Successfully merging this pull request may close these issues.

Add option to make commit messages follow Conventional style including scopes

3 participants

@pedrokpp@fazulk@juliusmarminge
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default"); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
Skip to content

feat(git): enforce Conventional Commits format in commit message prompt - #2123

Closed
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
Closed

feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

Conversation

@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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Run ID: 0d82ba1a-18a8-48f9-9822-5a37db9716cd

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@pedrokpp

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ContributorAuthor

Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

Copy link
Copy Markdown
ContributorAuthor

This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

Copy link
Copy Markdown
Contributor

Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

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Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Add option to make commit messages follow Conventional style including scopes

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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feat(git): enforce Conventional Commits format in commit message prompt - #2123

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pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
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feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

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@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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@pedrokpp

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Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

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This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

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Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Labels

size:XS0-9 changed lines (additions + deletions).vouch:unvouchedPR author is not yet trusted in the VOUCHED list.

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Successfully merging this pull request may close these issues.

Add option to make commit messages follow Conventional style including scopes

3 participants

@pedrokpp@fazulk@juliusmarminge
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode"); } } catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); } })(); })();
Skip to content

feat(git): enforce Conventional Commits format in commit message prompt - #2123

Closed
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt
Closed

feat(git): enforce Conventional Commits format in commit message prompt#2123
pedrokpp wants to merge 3 commits into
pingdotgg:mainfrom
pedrokpp:feat/conventional-commits-prompt

Conversation

@pedrokpp

@pedrokpppedrokpp commented Apr 17, 2026

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What changed

One rule in buildCommitMessagePrompt (apps/server/src/git/Prompts.ts):

Before:

- subject must be imperative, <= 72 chars, and no trailing period

After:

- subject must follow Conventional Commits format: type(scope): description
- type must be one of: feat, fix, docs, style, refactor, test, chore
- scope is optional; description is imperative, <= 72 chars total, no trailing period

Why it should exist

t3code already enforces a naming convention for branches via sanitizeFeatureBranchName (packages/shared/src/git.ts), which hard-codes the feature/ gitflow prefix on every generated branch. The same intent — consistent, predictable output — applies to commit messages.

Right now the prompt produces freeform imperative subjects with no structure. Conventional Commits gives changelogs, tooling, and contributors a machine-readable signal without adding friction. It's the natural complement to the existing branch convention.

Closes#656.

Testing

Generate a commit message through the UI with staged changes and verify the output follows type(scope): description format.


Note

Low Risk
Prompt-only change to text generation; no auth, git execution, or schema changes beyond LLM instructions.

Overview
AI-generated commit subjects from buildCommitMessagePrompt are now instructed to use Conventional Commits (type(scope): description) instead of a free-form imperative line.

The prompt replaces a single subject rule with explicit constraints: allowed types (feat, fix, docs, style, refactor, test, chore), optional scope, imperative description with no trailing period, and a ≤72 character full subject line. JSON shape and downstream handling (e.g. sanitizeCommitSubject in Claude/Codex/Cursor text generation) are unchanged—only what the model is told to produce shifts.

Reviewed by Cursor Bugbot for commit b8faa63. Bugbot is set up for automated code reviews on this repo. Configure here.

Note

Enforce Conventional Commits format in buildCommitMessagePrompt

Updates the prompt rules in Prompts.ts to require subjects in type(scope): description format. The allowed types are feat|fix|docs|style|refactor|test|chore, scope is optional, the description must be imperative with no trailing period, and the full subject line must be ≤72 characters. Behavioral Change: any AI-generated commit messages produced via this prompt will now follow Conventional Commits structure rather than free-form imperative style.

Macroscope summarized b8faa63.

@github-actionsgithub-actionsBot added size:XS 0-9 changed lines (additions + deletions). vouch:unvouched PR author is not yet trusted in the VOUCHED list. labels Apr 17, 2026
Comment threadapps/server/src/git/Prompts.ts Outdated
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Review profile: CHILL

Plan: Pro

Run ID: 0d82ba1a-18a8-48f9-9822-5a37db9716cd

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

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@pedrokpp

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ContributorAuthor

Ran into this while using t3code — generated commit messages had no consistent structure, making history hard to scan and breaking tooling that expects a predictable format.

A few other attempts exist for related problems:

Those are larger in scope. This PR does one thing: adds Conventional Commits rules to the prompt, consistent with the feature/ branch naming already enforced by sanitizeFeatureBranchName. Small, focused, no new surface area — tried to stay within the contributing guidelines.

@pedrokpp

Copy link
Copy Markdown
ContributorAuthor

This is intentionally minimal — a temporary fix until there's a more robust solution for customizable commit conventions.

A more flexible approach could be delegating style guidelines to the user's AGENTS.md, letting each project define its own commit conventions rather than hardcoding Conventional Commits. That said, happy to keep this simple and wait for feedback on the direction you'd prefer.

@macroscopeapp

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Approvability

Verdict: Approved

This change modifies AI prompt instructions to enforce Conventional Commits format for generated commit messages. It's a low-risk, self-contained change to documentation/prompt text with no runtime behavior impact beyond the format of generated commit messages.

You can customize Macroscope's approvability policy. Learn more.

@fazulk

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This is like the one thing preventing me from using t3 as a daily driver. please merge!

Replaces the loose subject rule with explicit Conventional Commits
format (type(scope): description), consistent with the existing
gitflow branch naming enforced by sanitizeFeatureBranchName.
@juliusmarminge
juliusmarmingeforce-pushed the feat/conventional-commits-prompt branch from dabc6e5 to 1dc45beCompareJune 16, 2026 17:31

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Cursor Bugbot has reviewed your changes using high effort and found 2 potential issues.

Fix All in Cursor

❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.

Want fixes drafted automatically? Bugbot Autofix can create code changes for findings. A team admin can enable Autofix in the Cursor dashboard.

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",
"- full subject line must be <= 72 chars",

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Contributor

Choose a reason for hiding this comment

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Sanitizer breaks new commit format

Low Severity

The prompt now requires Conventional Commits subjects, but sanitizeCommitSubject and sanitizeCommitMessage can still rewrite the model output into a non-conforming subject via hard slice(0, 72) truncation or the Update project files fallback, so the AI commit path does not actually guarantee the new format.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

"- subject must be imperative, <= 72 chars, and no trailing period",
"- subject must follow Conventional Commits format: type(scope): description",
"- type must be one of: feat, fix, docs, style, refactor, test, chore",
"- scope is optional; description is imperative, no trailing period",

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Ambiguous optional scope format

Low Severity

The subject rule presents type(scope): description as the required shape while also saying scope is optional, without stating the no-scope form type: description. That can push models toward always inventing a scope or emitting empty parentheses, which is invalid Conventional Commits and weakens the consistency this change aims for.

Fix in CursorFix in Web

Reviewed by Cursor Bugbot for commit b8faa63. Configure here.

@t3-code

t3-codeBot commented Aug 4, 2026

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Closing as superseded by #4204, which added configurable commit message styles rather than hardcoding Conventional Commits: #4204

@t3-codet3-codeBot closed this Aug 4, 2026
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Successfully merging this pull request may close these issues.

Add option to make commit messages follow Conventional style including scopes

3 participants

@pedrokpp@fazulk@juliusmarminge