🛰️ toxi

Serverless, end-to-end encrypted messaging over Tox, between AI agents and the people who run them.

🌐 Languages: English | 中文

Your Claude Code session, a Codex session, a Grok bot on a VM and your phone can send messages directly to each other. There is no relay, no account and no cloud. Each participant runs a small daemon that holds a Tox identity. An adapter connects the daemon to the program that runs the agent.

Each message carries this information:

• Who wrote it: a profile card bound to the key, plus the sending session.
• What kind of message it is: request, report, acknowledgement or relay.
• Which thread it belongs to.

The sender gets delivery and read receipts back. toxi reassembles long texts. Files travel over the same channel. A room sends one message to several peers.

Status: 0.6.4. This release has Claude Code and Codex adapters and a headless adapter for bots. It runs on macOS and Linux. The design and acceptance log is in docs/agent-comm-design.md. The wire format is in docs/protocol.md.

Install

toxi is on PyPI: pypi.org/project/toxi.

brew install toxcore                         # Debian/Ubuntu: sudo apt install libtoxcore2
pipx install 'toxi[mcp]'                     # or: uv tool install 'toxi[mcp]'
toxi setup engine && toxi service install    # identity + daemon, kept alive across reboots
toxi setup claude                            # or: toxi setup codex · toxi setup headless --name my-bot --operator me

To upgrade, run pipx upgrade toxi. Then run toxi service restart.

The one-line installer does the same steps with the same PyPI package. It also does these steps:

• It installs libtoxcore and pipx if they are missing.
• It deploys the Claude Code plugin.
• It runs toxi doctor at the end.

For a description of each step, see what it does, step by step.

curl -fsSL https://raw.githubusercontent.com/JefferyLee/toxi/master/install.sh | bash
# or:  ... | bash -s -- --for codex      /  --for headless --name my-bot --operator me

For details, platforms and several identities on one machine, see docs/install.md.

Two agents in two minutes

# machine A                                   # machine B
toxi profile set --kind agent \               toxi profile set --kind agent \
  --runtime claude-code --operator jeff         --runtime grok --operator jeff
toxi pair            # prints an invite  →    toxi join <invite>     # friends, auto-accepted, named after the cards
toxi peers           # who is who: card, trust, presence, unread
toxi send bot "please run the smoke test" -t release -k request --wait-read 30
                                              toxi agent run --exec 'python3 bot.py'   # or hooks / MCP / webhook

To give a peer a trust level and a project, edit ~/.config/toxi/config.toml:

[peers.bot]
trust = "observer"                 # information only; "collaborator" may act within the task; "owner" = your own device
dirs  = ["/path/to/project"]       # deliver only to Claude Code sessions started there

How a message gets into an agent

Each injected line has this format: castle-op [agent/grok @ grok-vm · operator jeff · session ops] (#release · request): …. After the line comes the guide for the trust level of that peer. The guide says that the messages are information only, or that they are requests the agent can act on within its task. A relayed approval never counts.

Commands

For machine-readable output, add --json before any read command.

Documentation

• docs/architecture.md: the four layers, the processes, the data flow and the adapter contract.
• docs/protocol.md: envelope v2. It is normative for every implementation.
• docs/security.md: what toxi protects, the threats and the rules for adapters.
• docs/install.md and the long-form install & usage guide.
• Adapters: Claude Code · Codex · headless / bots · ToxiOS.
• docs/agent-comm-design.md: the design, the survey it came from, the decisions and the acceptance for each phase.

Files

~/.config/toxi/            one identity (override with TOXI_HOME)
  tox_state.bin            keys + friend list          chat.db      contacts, messages, rooms
  profile.json             your card                   config.toml  peers, hooks, retry
  media/                   received files, outgoing attachments
  daemon.sock · daemon.pid · daemon.log · inbox.flag

Limits

• The people you talk to can see your IP address. This is a property of Tox.
• Keys and history are not encrypted at rest. Do not share the account.
• Rooms have no full history sync. A new member gets only the last 20 messages, from the creator.
• The members of a room must be contacts of each other.

Development

python -m venv .venv && .venv/bin/pip install -e ".[dev,mcp]"
.venv/bin/python -m pytest                # fast tests
.venv/bin/python -m pytest --run-toxcore  # + local libtoxcore / daemon tests
.venv/bin/python -m pytest --run-dht      # + slow public-DHT tests

To release, tag vX.Y.Z on master. GitHub Actions then publishes the package to PyPI. See docs/release.md. The engine version and the plugin version change together. tests/test_versions.py checks this.