:core:protocol, package app.hapi.protocol — pure-JVM foundations for the
Android client, mirrored from shared/src/schemas.ts + sessionSummary.ts and
docs/api/client-contract/{sse,pagination,messages}.md:
- wire/: shared HapiJson config; DecryptedMessage with tri-state invokedAt
(custom serializer — explicit null = queued vs absent = legacy-invoked);
AttachmentMetadata; AgentState + (completed) requests; Session verified
field-by-field against SessionSchema; typed-subset SessionMetadata;
SessionSummary/PendingRequest; SessionPatch with VersionedValue wrappers
and a strict SessionPatches.parse (unknown key / empty / mistyped -> null,
replicating SessionPatchSchema.strict()); Machine family; the 13-type
SyncEvent union behind total SyncEvents.parse (unknown/malformed ->
Unknown, never throws; machine-updated data kept tri-state for the
removed-vs-refetch distinction); MessagesPage + REST envelopes.
- catalog/: AgentFlavor (known + Other(raw)) with capabilities/labels from
flavors.ts; PermissionMode/tone table, per-flavor mode lists, codex
collaboration + copilot agent modes incl. legacy 'fleet' normalization.
- patch/SessionPatching.kt: exact port of web/src/lib/sessionPatch.ts —
strict > version gates, max-monotonic updatedAt, activeAt <60s
render-irrelevance, and deliberately NOT applying activeTurnStartedAt /
scratchlistUpdatedAt (the TS reference never assigns them).
Tests (85 total, all green): golden-fixture decoding over shared/fixtures/
chat/* (fails loudly on zero files or unsupported VERSION), version-gate /
keep-alive cases ported from useSSE.test.ts, full-session + list + messages
page decode, SyncEvent union coverage, catalog pins (TODO(K6): switch to
fixtures/catalogs/modes.json once generated). :app:assembleDebug verified.
HAPI
Run official Claude Code / Codex / Cursor Agent / Grok Build / OpenCode / Kimi / Copilot / Antigravity / Pi sessions locally and control them remotely through a Web / PWA / Telegram Mini App.
Why HAPI? HAPI is a local-first alternative to Happy. See Why Not Happy? for the key differences.
Features
- Seamless Handoff - Work locally, switch to remote when needed, switch back anytime. No context loss, no session restart.
- Native First - HAPI wraps your AI agent instead of replacing it. Same terminal, same experience, same muscle memory.
- AFK Without Stopping - Step away from your desk? Approve AI requests from your phone with one tap.
- Your AI, Your Choice - Claude Code, Codex, Cursor Agent, Grok Build, OpenCode, Kimi, Copilot, Antigravity, Pi—different agents, one unified workflow.
- Terminal Anywhere - Run commands from your phone or browser, directly connected to the working machine.
- Voice Control - Talk to your AI agent hands-free using the built-in voice assistant.
- Workspace Browser - Opt-in via one or more
hapi runner start --workspace-root <path>flags: browse scoped file trees from the web and start sessions in allowed subdirectories.
Demo
https://github.com/user-attachments/assets/38230353-94c6-4dbe-9c29-b2a2cc457546
Getting Started
npx @twsxtd/hapi hub --relay # start hub with E2E encrypted relay
npx @twsxtd/hapi # run claude code
hapi server remains supported as an alias.
The terminal will display a URL and QR code. Scan the QR code with your phone or open the URL to access.
The relay uses WireGuard + TLS for end-to-end encryption. Your data is encrypted from your device to your machine.
For self-hosted options (Cloudflare Tunnel, Tailscale), see Installation
Docs
Build from source
bun install
bun run build:single-exe
Credits
HAPI means "哈皮" a Chinese transliteration of Happy. Great credit to the original project.