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101 lines
3.4 KiB
Markdown
101 lines
3.4 KiB
Markdown
# SimpleX Chat
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[SimpleX Chat](https://simplex.chat/) is a private, decentralised messaging platform where users own their contacts and groups. Unlike other platforms, SimpleX assigns no persistent user IDs — every contact is identified by an opaque internal ID generated at connection time, which makes it one of the most private messengers available.
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> Run `hermes gateway setup` and pick **SimpleX** for a guided walk-through.
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## Prerequisites
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- The **simplex-chat** CLI installed and running as a daemon
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- Python package **websockets** (`pip install websockets`)
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## Install simplex-chat
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Download the latest release from the [simplex-chat GitHub releases](https://github.com/simplex-chat/simplex-chat/releases) page:
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```bash
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# Linux / macOS binary
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curl -L https://github.com/simplex-chat/simplex-chat/releases/latest/download/simplex-chat-ubuntu-22_04-x86_64 -o simplex-chat
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chmod +x simplex-chat
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```
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The SimpleX Chat project does not publish a prebuilt Docker image for the chat client; to run it under Docker, build from source from the [simplex-chat repository](https://github.com/simplex-chat/simplex-chat).
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## Start the daemon
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```bash
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simplex-chat -p 5225
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```
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The daemon listens on WebSocket at `ws://127.0.0.1:5225` by default.
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## Configure Hermes
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### Via setup wizard
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```bash
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hermes setup gateway
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```
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Select **SimpleX Chat** and follow the prompts.
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### Via environment variables
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Add these to `~/.hermes/.env`:
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```
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SIMPLEX_WS_URL=ws://127.0.0.1:5225
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SIMPLEX_ALLOWED_USERS=<contact-id-1>,<contact-id-2>
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SIMPLEX_HOME_CHANNEL=<contact-id>
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```
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| Variable | Required | Description |
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|---|---|---|
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| `SIMPLEX_WS_URL` | Yes | WebSocket URL of the simplex-chat daemon |
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| `SIMPLEX_ALLOWED_USERS` | Recommended | Comma-separated contact IDs allowed to use the agent |
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| `SIMPLEX_ALLOW_ALL_USERS` | Optional | Set `true` to allow every contact (use carefully) |
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| `SIMPLEX_HOME_CHANNEL` | Optional | Default contact ID for cron job delivery |
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| `SIMPLEX_HOME_CHANNEL_NAME` | Optional | Human label for the home channel |
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## Find your contact ID
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After starting the daemon, open a conversation with your agent contact. The contact ID will appear in session logs or via `hermes send_message action=list`.
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## Authorization
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By default **all contacts are denied**. You must either:
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1. Set `SIMPLEX_ALLOWED_USERS` to a comma-separated list of contact IDs, or
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2. Use **DM pairing** — send any message to the bot and it will reply with a pairing code. Enter that code via `hermes gateway pair`.
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## Using SimpleX with cron jobs
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```python
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cronjob(
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action="create",
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schedule="every 1h",
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deliver="simplex", # uses SIMPLEX_HOME_CHANNEL
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prompt="Check for alerts and summarise."
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)
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```
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Or target a specific contact:
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```python
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send_message(target="simplex:<contact-id>", message="Done!")
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```
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## Privacy notes
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- SimpleX never reveals phone numbers or email addresses — contacts use opaque IDs
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- The connection between Hermes and the daemon is local WebSocket (`ws://127.0.0.1:5225`) — no data leaves your machine
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- Messages are end-to-end encrypted by the SimpleX protocol before reaching the daemon
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## Troubleshooting
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**"Cannot reach daemon"** — Ensure `simplex-chat -p 5225` is running and the port matches `SIMPLEX_WS_URL`.
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**"websockets not installed"** — Run `pip install websockets`.
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**Messages not received** — Check that the contact's ID is in `SIMPLEX_ALLOWED_USERS` or approve them via DM pairing.
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