A reference guide for building terminal user interfaces with OpenTUI, a toolkit for creating text-based apps that run in a command-line window. It covers OpenTUI's core APIs, components, framework bindings, testing, and deployment.

Use it to build or update OpenTUI applications, choose between Core, React, or Solid packages, look up public APIs, and work with components, events, integrations, tests, and deployment.

It gives the coding agent the relevant OpenTUI documentation and layout rules, so terminal screens are designed for rows and columns instead of browser-style spacing.

opentui — Skill for Claude Code and Codex by anomalyco

About the project

OpenTUI is a library for building terminal user interfaces with TypeScript, React, or Solid, using a Zig-based native core. Developers use it to create keyboard- and mouse-driven terminal applications with elements such as text, inputs, selections, images, and scrollable areas. Catalogue add-ons provide documentation and guidance for working with OpenTUI.

anomalyco/opentui · 13,629 stars · on GitHub · opentui.com

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add anomalyco/opentui --skill content

Clone the repo

git clone --depth 1 https://github.com/anomalyco/opentui

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/anomalyco/opentui/content/github.svg)](https://agentmods.dev/skills/anomalyco/opentui/content)

Your own site

<a href="https://agentmods.dev/skills/anomalyco/opentui/content"><img src="https://agentmods.dev/badge/skills/anomalyco/opentui/content/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/anomalyco/opentui/content"><img src="https://agentmods.dev/badge/skills/anomalyco/opentui/content.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 36 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,882 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector warn 7 Sept 2026

SkillSpector: 3 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

medium Prompt Injection · line 71
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 74
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
medium Prompt Injection · line 83
Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.

Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00036	$0.02882
Opus 5.5	$0.00014	$0.01153
Sonnet 5.5	$0.00007	$0.00576
Haiku 4.5	$0.00004	$0.00288

Measured 16d ago against content hash 3524c6133707, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

opentui scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 16d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

packages/web/src/content/SKILL.md · 165 lines

How it starts

The opening of the file, as written. The whole thing — 165 lines — stays where its author put it; the contents beside it link to each section on GitHub.

OpenTUI Skill

Canonical reference docs are in the sibling docs/**/*.mdx files.

Inside the OpenTUI repository, this skill root is packages/web/src/content/. The same files are available under packages/web/src/content/docs/**/*.mdx from the repository root.

Terminal layout defaults

Design for a terminal app, not a browser. Use the available columns and rows efficiently.

Do not use gaps between adjacent UI panels.
Do not add unnecessary margins or padding.
Prefer compact, information-dense layouts over website-style card spacing.

Path invariant

/docs maps to docs/getting-started.mdx.
/docs/components maps to docs/components/overview.mdx.
Every other /docs/<slug> URL maps to docs/<slug>.mdx relative to this skill root.
From the repository root, prepend packages/web/src/content/ to each source path.
/docs/releases/<version> maps to docs/releases/<version>.md, the release notes of that version.

Versions

The docs describe the release or branch that this skill came from. Each release notes file lists what changed in that release and links the pages it affects. When a project uses an older @opentui/core than the docs describe, read the notes of the newer releases before you use an API, and prefer what the project's version provides.

Choose packages

Use Core directly or choose a React or Solid binding for the UI. Recommend companion packages when their features fit the task. Do not install every package by default.

@opentui/core: use imperative renderables and events with createCliRenderer().
@opentui/react: use React components, JSX, and hooks with createRoot().
@opentui/solid: use Solid components, JSX, and signals with render().
@opentui/keymap: centralize keyboard bindings and named commands across views. The package supports focus-scoped layers, configurable shortcuts, and multi-key sequences. Start with createDefaultOpenTuiKeymap() from @opentui/keymap/opentui. Use @opentui/keymap/react or @opentui/keymap/solid for providers and hooks. Direct keyboard events or component-local bindings are enough for simple local input.
@opentui/ssh: serve a terminal UI to standard SSH clients without a local app installation. Import createServer() from the package root. Pass each session's renderer to Core, React, or Solid. The package has no framework subpaths. Read the SSH guide for authentication, middleware, and session cleanup.
@opentui/qrcode: encode QR matrices, terminal text, or SVG, or display a QRCodeRenderable. For JSX, use registerQRCode() from @opentui/qrcode/react or @opentui/qrcode/solid. See the QR code component.
@opentui/three: render Three.js WebGPU scenes in the terminal with ThreeRenderable. This integration supports only Bun. Before you choose it, check its runtime and dependency requirements.

Read the full file on GitHub · 165 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

16d ago Changed · +7 lines 3524c6133707
18d ago Changed · +8 lines d978beb6d778
1mo ago Changed 840d329f3474
1mo ago First seen · 150 lines · 36 tokens per session scan A 86a0dd441325

Subscribe to this mod's changes

opentui is a skill published in the GitHub repository anomalyco/opentui (13,629 stars, last pushed today), licensed MIT. It adds 36 tokens to every session and 2,882 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Frontend opencode opentui tui

critique

Git diff viewer. Renders diffs as web pages, images, and PDFs with syntax highlighting. Use this skill when working with critique for showing diffs, generating diff URLs, or selective hunk staging.

remorses/critique · 45 tokens

showagent-session-handoff

Finds, previews, and resumes local coding-agent sessions using the showagent MCP server. Use when the user asks to search prior agent conversations, continue old work, branch a session, or transfer context between coding agents.

aytzey/showagent · 50 tokens

opencode

Use when working with a model-agnostic terminal AI coding agent that uses opencode.json for declarative configuration — MCP servers, custom commands, agent routing, skills. OpenCode: configuration-as-code terminal AI coding agent with multi-model support.

znlgis/opengis-skills · 52 tokens

orca-emulator-android

Android device and emulator control from inside Orca over adb, with the live device view in Orca's emulator pane. Use when driving an adb-connected emulator or phone on Windows, Linux, or macOS: booting AVDs, taps, swipes, typing, hardware buttons, rotation, app install and launch, runtime permissions, the…

stablyai/orca · 102 tokens

ralplan

Consensus planning entrypoint that auto-gates vague ralph/autopilot/team requests before execution.

Yeachan-Heo/oh-my-claudecode · 21 tokens

pr

Draft a PR body from OMC's paper trail — the smallest visual that proves the change, evidence consumed from the verify protocol (never re-collected), reversibility from the ADR test on the diff, glossary language throughout.

Yeachan-Heo/oh-my-claudecode · 47 tokens