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Built on the goated T3 Code by T3 Tools.

V12Code

V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).

What is V12Code?

V12Code brings the best coding-agent workflows into one fast, open-source app:

  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.

Installation

Warning

V12Code currently supports Codex, Claude, Cursor, and OpenCode. Install and authenticate at least one provider before use:

  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login

Run without installing

npx v12code@latest

Tip: Use npx v12code@latest --help for the full CLI reference.

Desktop app

Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:

Windows (winget)

winget install V12Code.V12Code

macOS (Homebrew)

brew install --cask 12ya/tap/v12code

Arch Linux (AUR)

yay -S v12code-bin

Some notes

We are very very early in this project. Expect bugs.

There's no public docs site yet, checkout the miscellaneous markdown files in docs.

Documentation

Contributing

Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.

Install vp

V12Code uses Vite+ so you'll need to install the global vp command-line tool.

macOS / Linux

curl -fsSL https://vite.plus | bash

Windows

irm https://vite.plus/ps1 | iex

Checkout their getting started guide for more information: https://viteplus.dev/guide/

Install dependencies

vp i

Need support? Open an issue.

About

based on T3Code

Resources

Readme
License

Code of conduct

Code of conduct

Contributing

Contributing

Security policy

Security policy
Activity

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

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, '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" + '

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tsconfig.base.json
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Repository files navigation
Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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, '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('^' + ".*" + '

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CLAUDE.md
CODE_OF_CONDUCT.md
CODE_OF_CONDUCT.md
CONTRIBUTING.md
CONTRIBUTING.md
LICENSE
LICENSE
README.md
README.md
SECURITY.md
SECURITY.md
app.json
app.json
favicon.svg
favicon.svg
package.json
package.json
pnpm-lock.yaml
pnpm-lock.yaml
pnpm-workspace.yaml
pnpm-workspace.yaml
tsconfig.base.json
tsconfig.base.json
vite.config.ts
vite.config.ts
Repository files navigation
Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
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, '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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.env.example
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AGENTS.md
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CODE_OF_CONDUCT.md
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CONTRIBUTING.md
LICENSE
LICENSE
README.md
README.md
SECURITY.md
SECURITY.md
app.json
app.json
favicon.svg
favicon.svg
package.json
package.json
pnpm-lock.yaml
pnpm-lock.yaml
pnpm-workspace.yaml
pnpm-workspace.yaml
tsconfig.base.json
tsconfig.base.json
vite.config.ts
vite.config.ts
Repository files navigation
Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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" + '

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scripts
scripts
.env.example
.env.example
.gitattributes
.gitattributes
.gitignore
.gitignore
AGENTS.md
AGENTS.md
CLAUDE.md
CLAUDE.md
CODE_OF_CONDUCT.md
CODE_OF_CONDUCT.md
CONTRIBUTING.md
CONTRIBUTING.md
LICENSE
LICENSE
README.md
README.md
SECURITY.md
SECURITY.md
app.json
app.json
favicon.svg
favicon.svg
package.json
package.json
pnpm-lock.yaml
pnpm-lock.yaml
pnpm-workspace.yaml
pnpm-workspace.yaml
tsconfig.base.json
tsconfig.base.json
vite.config.ts
vite.config.ts
Repository files navigation
Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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('^' + ".*" + '

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Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
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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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Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
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0 forks
Report repository
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, '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); }
})();
})();

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package.json
pnpm-lock.yaml
pnpm-lock.yaml
pnpm-workspace.yaml
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tsconfig.base.json
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vite.config.ts
vite.config.ts
Repository files navigation
Built on the goated T3 Code by T3 Tools.
V12Code
V12Code is a minimal web GUI for coding agents (currently Codex, Claude, Cursor, and OpenCode, more coming soon).
What is V12Code?
V12Code brings the best coding-agent workflows into one fast, open-source app:
  • Cursor-like chat drafts: Start a chat, switch away, and come back without losing what you wrote.
  • Message queuing: Send follow-up messages while an agent is working and keep the next instructions ready to go.
  • Codex-like tasks: Follow agent work as clear tasks instead of digging through a wall of output.
  • Annotations and tasks: Select text from a response, turn it into a tracked task, and send it back to the agent with its original context.
  • Richer tool-call details: See commands, file changes, results, and failures in useful, readable cards.
  • Chat pinning: Keep important chats at the top of the sidebar so they stay easy to find.
Installation
Warning
V12Code currently supports Codex, Claude, Cursor, and OpenCode.
Install and authenticate at least one provider before use:
  • Codex: install Codex CLI and run codex login
  • Claude: install Claude Code and run claude auth login
  • Cursor: install Cursor CLI and run cursor-agent login
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx v12code@latest
Tip: Use npx v12code@latest --help for the full CLI reference.
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install V12Code.V12Code
macOS (Homebrew)
brew install --cask 12ya/tap/v12code
Arch Linux (AUR)
yay -S v12code-bin
Some notes
We are very very early in this project. Expect bugs.
There's no public docs site yet, checkout the miscellaneous markdown files in docs.
Documentation
Contributing
Contributions are welcome. Read CONTRIBUTING.md before opening an issue or PR.
Install vp
V12Code uses Vite+ so you'll need to install the global vp command-line tool.
macOS / Linux
curl -fsSL https://vite.plus | bash
Windows
irm https://vite.plus/ps1 | iex
Checkout their getting started guide for more information: https://viteplus.dev/guide/
Install dependencies
vp i
Need support? Open an issue.
About
based on T3Code
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Security policy
Security policy
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages