# Hermes PWA

A mobile-first **Progressive Web App** front end for a self-hosted
[Hermes Agent](https://hermes-agent.nousresearch.com) (Nous Research). It talks
directly to the **Hermes Agent API Server** — the OpenAI-compatible HTTP + SSE
endpoint — so you can chat with your agent, browse sessions, and use text, voice,
and images from an installable app.

Branding (logo, colour scheme, app icons) follows [derez.ai](https://derez.ai/);
the logo in the sidebar links to the homepage.

---

## Which URL do I use? (dashboard vs API server)

Hermes exposes **two different servers**. This app needs the second one.

| URL | What it is | Auth | Works with this app? |
| --- | --- | --- | --- |
| `https://your-host/` (e.g. `beaver.derez.ai`) | The **web dashboard** | username + password → session cookie | ❌ No. It only allows CORS from its own origin and never sends `Access-Control-Allow-Credentials: true`, so a separately-hosted app can't use its cookie. |
| `https://api.your-host/` (e.g. `api.beaver.derez.ai`, default port `8642`) | The **API Server** | `Authorization: Bearer <API_SERVER_KEY>` | ✅ **Yes — this is the one.** |

So enter the **API server URL** and your **`API_SERVER_KEY`** on the config
screen. There is no QR login and no username/password here — the API server uses
a bearer token.

### Enabling the API server (on the Hermes host)

If it isn't already running, add to `~/.hermes/.env` and start the gateway:

```bash
API_SERVER_ENABLED=true
API_SERVER_KEY=choose-a-long-random-secret
# Only needed if a browser calls the API directly (see CORS below):
# API_SERVER_CORS_ORIGINS=https://your-pwa-origin
```

```bash
hermes gateway      # → [API Server] API server listening on http://127.0.0.1:8642
```

Verify from anywhere:

```bash
curl -s https://api.your-host/health
# {"status": "ok", "platform": "hermes-agent", "version": "..."}

curl -s -H "Authorization: Bearer $API_SERVER_KEY" https://api.your-host/v1/capabilities
```

---

## Reaching the API server (CORS)

The API server has **no browser CORS by default**. Two options:

### Option A — same origin (recommended): use the bundled proxy

`server/proxy.mjs` serves the built app **and** proxies `/api/*` and `/v1/*` to
the API server, so everything is same-origin and CORS never applies.

**You normally paste the API key into the app in the browser** (it's saved in
that browser's `localStorage`). The proxy does not need the key:

```bash
HERMES_TARGET=https://api.beaver.derez.ai PORT=8787 ./run.sh serve
# open http://localhost:8787
```

Then in the app's config screen, tick **"Same origin (behind the bundled
proxy)"** and paste your API key. Done — no key on the server, no CORS.

> `HERMES_API_KEY` is **optional**. Only set it if you'd rather keep the key on
the proxy so it never reaches the browser:
>
> ```bash
> HERMES_TARGET=https://api.beaver.derez.ai HERMES_API_KEY=your-key PORT=8787 ./run.sh serve
> ```

### Option B — direct, cross-origin

Set an explicit allowlist on the Hermes host and enter the API URL + key in the
app's config screen:

```bash
API_SERVER_CORS_ORIGINS=https://your-pwa-origin
```

For local development you can skip CORS entirely with a dev proxy:

```bash
# .env
HERMES_DEV_TARGET=https://api.beaver.derez.ai
```

---

## Quick start

```bash
./run.sh            # dev server -> http://localhost:5173
```

Then on the config screen enter your **API server URL** and **API key**.

### `run.sh` modes

```bash
./run.sh              # dev server (http://localhost:5173)
./run.sh build        # production build into dist/
./run.sh serve        # build if needed, then host + proxy /api/*, /v1/* (needs HERMES_TARGET)
./run.sh preview      # build, then serve the build with vite preview
./run.sh icons        # regenerate the PWA icon set
./run.sh typecheck    # type-check without emitting
```

| Variable | Used by | Meaning |
| --- | --- | --- |
| `HERMES_TARGET` | `serve` | API server base URL to proxy to |
| `HERMES_API_KEY` | `serve` | Optional — injected as `Authorization: Bearer …` |
| `PORT` | `serve` | Port to listen on (default `8787`) |
| `HERMES_DEV_TARGET` | `dev` | API server base URL to proxy to during development |

---

## Features

- **Config screen** — add one or more API-server connections (URL, API key,
  optional profile prefix, custom headers) with a "Test" probe.
- **Sessions** — list, open, create, rename, fork, and delete; filter by title.
- **Streaming chat** — token-by-token replies over SSE, with live tool-call
  cards, cancel, and mid-turn steer.
- **Images** — attach/paste/drag-drop; sent inline as `data:` URLs.
- **Voice** — dictation via the browser's Web Speech API and spoken replies via
  on-device speech synthesis. Tap the mic to speak your prompt; tap again to stop.
  Requires a **secure context** (HTTPS or `localhost`) and a browser with the Web
  Speech API (Chrome, Edge, Safari). Note: Chrome's dictation sends audio to
  Google's servers.
- **Installable PWA** — offline app shell, home-screen install, standalone display.

---

## Notes & limitations

- **Voice is client-side.** The API server has no `/transcribe` or `/tts`
  endpoint, so dictation uses the browser's `SpeechRecognition` and replies use
  `speechSynthesis`. Support varies by browser (best on Chrome/Edge/Safari).
- **Profiles.** The API server routes profiles via a `/p/<profile>/…` prefix, and
  each profile has its own `API_SERVER_KEY`. Add one connection per profile to
  see them all; the sidebar switches between connections.
- **Session ownership.** The API server can create and drive its own sessions,
  but it refuses to write to a session owned by another surface (CLI, TUI,
  dashboard, messaging) — those open read-only.
- **Response shapes.** The Sessions REST API's exact JSON envelope isn't fully
  documented, so the client normalises several shapes (`sessions`/`data`/`items`,
  `id`/`session_id`, string/array content). If a field looks off on your version,
  it's a one-line tweak in `src/api/client.ts`.

## Project layout

```
src/
  api/
    client.ts        # HermesClient: bearer auth, sessions REST, SSE chat
    types.ts         # API server types + normalised UI types
  hooks/
    useSpeechRecognition.ts  # browser dictation
    useTts.ts                # browser speech synthesis
  lib/
    config.ts        # saved connections (localStorage)
    format.ts        # time / token formatting
    markdown.tsx     # tiny safe markdown renderer
  state/
    store.ts         # zustand store: connections, sessions, streaming
  components/        # ConfigScreen, ConnectionForm, Sidebar, ChatView, Composer, …
server/
  proxy.mjs          # optional static host + /api,/v1 reverse proxy (no deps)
scripts/
  gen-icons.mjs      # dependency-free PNG icon generator
```

## License

Licensed under the [PolyForm Internal Use License 1.0.0](./LICENSE) — internal
business use only; redistribution is not permitted. The license text is also
shipped in the build output as `dist/LICENSE`.

## API endpoints used

`GET /health`, `GET /v1/capabilities`, `GET /v1/models`,
`GET|POST /api/sessions`, `GET|PATCH|DELETE /api/sessions/{id}`,
`GET /api/sessions/{id}/messages`, `POST /api/sessions/{id}/fork`,
`POST /api/sessions/{id}/chat/stream` (SSE), and
`POST /v1/runs/{id}/stop|steer|approval|clarify`.