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T3 Code

T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).

Installation

Warning

T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login

Run without installing

npx t3

Desktop app

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

Windows (winget)

winget install T3Tools.T3Code

macOS (Homebrew)

brew install --cask t3-code

Arch Linux (AUR)

yay -S t3code-bin

Some notes

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

We are not accepting contributions yet.

Observability guide: docs/observability.md

If you REALLY want to contribute still.... read this first

Before local development, prepare the environment and install dependencies:

# Optional: only needed if you use mise for dev tool management.
mise install
bun install .

Read CONTRIBUTING.md before opening an issue or PR.

Need support? Join the Discord.

About

t3.codes

Resources

Readme
License

Contributing

Contributing
Activity

Stars

0 stars

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0 watching

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0 forks
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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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T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
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0 forks
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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('^' + ".*" + '

Skip to content
BranchesTags
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T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
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('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
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("// 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
BranchesTags
Repository files navigation
T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
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('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

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

Skip to content
BranchesTags
Repository files navigation
T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, '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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T3 Code
T3 Code is a minimal web GUI for coding agents (currently Codex, Claude, and OpenCode, more coming soon).
Installation
Warning
T3 Code currently supports Codex, Claude, 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
  • OpenCode: install OpenCode and run opencode auth login
Run without installing
npx t3
Desktop app
Install the latest version of the desktop app from GitHub Releases, or from your favorite package registry:
Windows (winget)
winget install T3Tools.T3Code
macOS (Homebrew)
brew install --cask t3-code
Arch Linux (AUR)
yay -S t3code-bin
Some notes
We are very very early in this project. Expect bugs.
We are not accepting contributions yet.
Observability guide: docs/observability.md
If you REALLY want to contribute still.... read this first
Before local development, prepare the environment and install dependencies:
# Optional: only needed if you use mise for dev tool management.
mise install
bun install .
Read CONTRIBUTING.md before opening an issue or PR.
Need support? Join the Discord.
About
t3.codes
Resources
Readme
License
Contributing
Contributing
Activity
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages