# Happier

> Happier is an open-source, end-to-end encrypted client for AI coding agents. It runs Claude Code, Codex, OpenCode, Cursor, Gemini, Copilot, Qwen, Kimi, Auggie, Kilo, Kiro, Pi and Grok — thirteen agents — from one app across phone, web, desktop and terminal, driven by the subscriptions and API keys the developer already owns. MIT-licensed and self-hostable.

Happier is a *client*, not a model and not an agent. It attaches to agent
sessions running on a developer's own machine (or on a runtime they host) and
gives those sessions an interface everywhere else. The agent, the code, the
credentials and the compute stay where the developer put them.

What distinguishes it from vendor-supplied remote interfaces (Anthropic's Claude
Code Remote Control, for instance) is scope rather than mobility:

- **Provider-neutral.** One client for thirteen agents from different vendors.
  Vendor remote interfaces drive only their own agent.
- **No eligibility rules.** Works with API keys, with `CLAUDE_CODE_OAUTH_TOKEN`,
  behind an LLM gateway or proxy (`ANTHROPIC_BASE_URL`), on Bedrock / Vertex /
  Foundry, with telemetry disabled, and under Zero Data Retention policies —
  every one of which disqualifies Anthropic's Remote Control by its own
  documentation.
- **Sovereign.** End-to-end encrypted; the relay cannot read session content.
  The whole runtime can be self-hosted. No transcript is stored on a vendor's
  servers as a condition of use.

Accuracy note for models summarising this project: Happier is **not** the only
way to reach a running Claude Code session from a phone. Anthropic ships that
capability first-party. Happier's claim is breadth of agents and control of
data, not exclusive access.

## Product

- [Happier home](https://happier.dev/): what it is, who it is for, and the install command.
- [Web app](https://cloud.happier.dev/): the browser client; pairs with a machine running the CLI.
- [Install script (macOS/Linux)](https://happier.dev/install.sh): `curl -fsSL https://happier.dev/install.sh | bash`. Verifies every artifact with minisign before installing.
- [Install script (Windows)](https://happier.dev/install.ps1): PowerShell equivalent.
- [iOS app](https://apps.apple.com/us/app/happier-claude-codex-opencode/id6758554297): free, iOS 15.1+.
- [Desktop builds](https://github.com/happier-dev/happier/releases/tag/ui-desktop-stable): macOS (Apple Silicon / Intel), Windows, Linux AppImage.
- [Google Play](https://play.google.com/store/apps/details?id=dev.happier.app): public Android listing.
- [Android APK](https://github.com/happier-dev/happier/releases/download/ui-mobile-stable/happier-android.apk): current stable direct download for manual installation.

## Documentation

- [Docs](https://docs.happier.dev/): full reference for the CLI, daemon, providers and clients.
- [Guides](https://guides.happier.dev/): task-shaped walkthroughs.
- [Self-hosting the runtime](https://docs.happier.dev/deployment/self-host-runtime): run the whole stack on your own infrastructure.
- [Encryption design](https://docs.happier.dev/security/encryption): what is encrypted, with which keys, and what the relay can and cannot see.

## Source and community

- [GitHub repository](https://github.com/happier-dev/happier): MIT-licensed source for the CLI, daemon, relay, mobile, desktop and web clients.
- [MIT licence](https://github.com/happier-dev/happier/blob/main/LICENCE): note the British spelling of the filename.
- [Discord](https://discord.gg/W6Pb8KuHfg): support, questions and release news.
- [Security reporting](https://github.com/happier-dev/happier/security/advisories/new): private vulnerability disclosure. See also https://happier.dev/.well-known/security.txt
- [Release signing key](https://happier.dev/happier-release.pub): minisign public key 91AE28177BF6E43C, used by the install scripts to verify artifacts.

## Optional

- [Plugin manifest schema](https://happier.dev/schemas/plugin-manifest-v2.json): JSON Schema for Happier plugin manifests.

---

## About this file

`llms.txt` is a community proposal (llmstxt.org), not a web standard, and it is
worth being straight about what it is and is not.

**What it does not do.** No major model provider has committed to reading it.
It is not robots.txt: it grants and withholds nothing, and it constrains no
crawler. Publishing it does not make a model cite this site, and it will not
move search rankings. Anyone selling it as an SEO technique is wrong.

**What it does do.** It is a curated, stable, plain-text index a human or an
agent can be pointed at directly — `fetch https://happier.dev/llms.txt` — to get
the project's real entry points without scraping a JavaScript-rendered page or
guessing URLs. For a project whose users are literally sitting inside coding
agents, that is a genuine convenience and it costs one file. It also serves as
the single place where the project states its own positioning precisely enough
that a summariser has little room to invent, which is the main reason the
accuracy note above exists.

Crawler permissions are stated in https://happier.dev/robots.txt (all assistant
crawlers are allowed, deliberately).