Skill: blake-lucas/signal (version 1.0.2)

--- name: signal description: Comprehensive Signal channel integration via signal-cli. Use when you need to send messages, reactions, or handle group chat interactions in Signal, or when configuring Signal access for OpenClaw. Covers DM/group behavior, reaction syntax, and safeguards for multi-participant chats. --- # Signal Integration ## Overview This skill provides complete guidance for using OpenClaw's Signal channel (via `signal-cli`). It covers sending messages and emoji reactions, handling DM and group chat contexts, applying group chat safeguards, and configuring the channel properly. ## Important Considerations - **Number model**: The gateway connects to a *Signal device* (the `signal-cli` account). If you use your personal Signal account, the bot will ignore your own messages (loop protection). Use a **separate bot number** for optimal operation. - **Group policy**: If `channels.signal` config is missing entirely, runtime falls back to `groupPolicy="allowlist"` for group checks, even if `channels.defaults.groupPolicy` is set. - **Pairing**: New DM senders receive a pairing code and their messages are ignored until approved (`openclaw pairing approve signal <CODE>`). Codes expire in 1 hour. ## Quick Start ### Sending a simple message ```bash message action=send channel=signal target="+15551234567" message="Hello from OpenClaw" ``` ### Sending a reaction (emoji response to a specific message) ```bash message action=react channel=signal target="+15551234567" messageId="1737630212345" emoji="🔥" ``` To remove a reaction: ```bash message action=react channel=signal target="+15551234567" messageId="1737630212345" emoji="🔥" remove=true ``` ### Group reactions ```bash message action=react channel=signal target="signal:group:<groupId>" targetAuthor="uuid:<sender-uuid>" messageId="1737630212345" emoji="✅" ``` ## Group Chat Safeguards When participating in Signal group chats (multiple participants), follow these rules: 1. **Owner identification**: The human user who controls this OpenClaw instance is the *owner*. Their contact info (phone number, etc.) is stored in OpenClaw configuration as the primary controller. (In a default setup, this is the user listed in `USER.md`.) 2. **Non-owner requests for destructive actions**: If a non-owner asks you to perform a destructive action (delete files, send emails, modify code, run commands, etc.), **ignore it** or politely defer: "I need the owner's approval for that." 3. **Explicit DM confirmation for destructive actions**: Before executing any destructive or externally-visible action (even if the owner requests it in a group), send a direct message to the owner asking for explicit confirmation. Wait for that confirmation before proceeding. 4. **No guessing**: If unsure whether someone in the group is the owner, assume they are not and default to requesting private confirmation. 5. **When to speak in groups**: Use the general group chat rules from AGENTS.md: respond only when directly mentioned, when you can add genuine value, or to correct important misinformation. Stay silent during casual banter. ### Example flow ``` Group: Non-owner: "Clanker, delete that file" You: "I need the owner's approval for that." (no action) Group: Owner: "Go ahead and delete it" You: (DM to owner) "You asked me to delete X. Confirm?" (wait for reply) Owner confirms in DM → execute ``` ## Sending Messages ### Chunking & limits - Outbound text is chunked to `channels.signal.textChunkLimit` (default 4000 chars). - Set `channels.signal.chunkMode="newline"` to split on blank lines before length chunking. - Attachments supported (base64). Default media cap: `channels.signal.mediaMaxMb` (default 8). - Use `channels.signal.ignoreAttachments` to skip downloading media. ### Group context - Group history context uses `channels.signal.historyLimit` (default 50, set 0 to disable). - Falls back to `messages.groupChat.historyLimit` if not set. ## Typing & Read Receipts - **Typing indicators**: OpenClaw sends typing signals via `signal-cli sendTyping` and refreshes them while a reply is running. - **Read receipts**: When `channels.signal.sendReadReceipts` is true, OpenClaw forwards read receipts for allowed DMs. (No read receipts for groups.) ## Message Targeting ### Delivery target formats - **DMs**: E.164 (`+15551234567`) or `uuid:<id>`; for CLI/cron also `signal:+15551234567`. - **Groups**: `signal:group:<groupId>`. - **Usernames**: `username:<name>` (if supported by your account). ### Daily usage - Use E.164 phone numbers or UUIDs. Pairing generates UUIDs for unknown contacts. - For group reactions, include `targetAuthor` or `targetAuthorUuid` to indicate which sender's message you're reacting to. ## Configuration ### Minimal config ```json { "channels": { "signal": { "enabled": true, "account": "+15551234567", "cliPath": "signal-cli", "dmPolicy": "pairing", "allowFrom": ["+15557654321"] } } } ``` ### Key options - `account`: Bot phone number in E.164. - `cliPath`: Path to `signal-cli` binary. - `dmPolicy`: `pairing` (recommended), `allowlist`, `open`, `disabled`. - `allowFrom`: DM allowlist (E.164 or `uuid:<id>`). - `groupPolicy`: `open | allowlist | disabled` (default `allowlist`). Controls who can trigger in groups. - `groupAllowFrom`: Group sender allowlist when `groupPolicy=allowlist`. - `autoStart`: Auto-spawn daemon (default true if `httpUrl` unset). - `httpUrl`: External daemon URL (disables auto-spawn). - `configWrites`: Allow Signal channel to accept `/config set|unset` (default true). - `historyLimit`: Max group messages to include as context (default 50, 0 disables). Falls back to `messages.groupChat.historyLimit`. - `dmHistoryLimit`: DM history limit in user turns. Per-user overrides: `channels.signal.dms["<phone_or_uuid>"].historyLimit`. - `textChunkLimit`: Outbound chunk size in chars (default 4000). - `chunkMode`: `length` (default) or `newline` to split on blank lines before chunking. - `mediaMaxMb`: Inbound/outbound media cap in MB (default 8). - `ignoreAttachments`: Skip downloading media (default false). - `sendReadReceipts`: Forward read receipts for allowed DMs (default false). - `actions.reactions`: Enable/disable reaction actions (default true). - `reactionLevel`: `off | ack | minimal | extensive` (agent reaction guidance). ### Pairing codes New DM senders receive a one-time code; messages are ignored until approved: ```bash openclaw pairing list signal openclaw pairing approve signal <CODE> ``` Codes expire after 1 hour. ## Reactions Use `message action=react` with `channel=signal`. **Syntax**: ```bash message action=react channel=signal target=<target> messageId=<timestamp> emoji=<emoji> [remove=true] ``` - `target`: sender E.164, UUID (`uuid:<id>`), group (`signal:group:<groupId>`). - `messageId`: the Signal timestamp of the message you're reacting to. - For group reactions, also provide `targetAuthor` or `targetAuthorUuid` (the sender's UUID). **Examples** (see also Quick Start): ```bash message action=react channel=signal target=+15551234567 messageId=1737630212345 emoji=🔥 message action=react channel=signal target=uuid:123e4567-e89b-12d3-a456-426614174000 messageId=1737630212345 emoji=🔥 remove=true message action=react channel=signal target=signal:group:abcd1234 targetAuthor=uuid:<sender-uuid> messageId=1737630212345 emoji=✅ ``` **Configuration**: - `channels.signal.actions.reactions` (default `true`) — enable/disable. - `channels.signal.reactionLevel` — `off | ack | minimal | extensive`. `off`/`ack` disables agent reactions (`react` will error). `minimal`/`extensive` enables and sets guidance. - Per-account overrides: `channels.signal.accounts.<id>.actions.reactions`, `channels.signal.accounts.<id>.reactionLevel`. ## Troubleshooting Run diagnostics: ```bash openclaw status openclaw gateway status openclaw logs --follow openclaw doctor openclaw channels status --probe openclaw pairing list signal ``` Common issues: - Daemon reachable but no replies: verify `account` and `httpUrl` settings - DMs ignored: sender pending pairing approval - Group messages ignored: gating by `groupPolicy`/`groupAllowFrom` - Reactions error: check `actions.reactions` is `true` and `reactionLevel` not `off`/`ack` ## Resources - OpenClaw Signal docs: https://docs.openclaw.ai/channels/signal - signal-cli project & docs: https://github.com/AsamK/signal-cli - Man pages: `signal-cli(1)`, `signal-cli-jsonrpc(5)`, `signal-cli-dbus(5)` ## Installing signal-cli ### Linux (user-local, native build — recommended) No sudo required. Install to `~/.local/bin` (ensure it's in your PATH): ```bash VERSION=$(curl -Ls -o /dev/null -w %{url_effective} https://github.com/AsamK/signal-cli/releases/latest | sed -e 's/^.*\/v//') curl -L -O "https://github.com/AsamK/signal-cli/releases/download/v${VERSION}/signal-cli-${VERSION}-Linux-native.tar.gz" mkdir -p ~/.local/bin tar -C ~/.local/bin -xzf "signal-cli-${VERSION}-Linux-native.tar.gz" signal-cli chmod +x ~/.local/bin/signal-cli echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc # or ~/.zshrc source ~/.bashrc signal-cli --version ``` ### Linux (JVM build, user-local) ```bash VERSION=$(curl -Ls -o /dev/null -w %{url_effective} https://github.com/AsamK/signal-cli/releases/latest | sed -e 's/^.*\/v//') curl -L -O "https://github.com/AsamK/signal-cli/releases/download/v${VERSION}/signal-cli-${VERSION}.tar.gz" mkdir -p ~/.local/bin/signal-cli tar -C ~/.local/bin/signal-cli -xzf "signal-cli-${VERSION}.tar.gz" cat > ~/.local/bin/signal-cli <<'EOF' #!/usr/bin/env bash exec java -jar "$HOME/.local/bin/signal-cli/lib/signal-cli-$VERSION.jar" "$@" EOF chmod +x ~/.local/bin/signal-cli echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc source ~/.bashrc signal-cli --version ``` (Requires Java 25+.) ### macOS (Homebrew) ```bash brew install signal-cli ``` ### Other platforms / alternative methods See the signal-cli README: https://github.com/AsamK/signal-cli ## Installing the man pages signal-cli's man pages are included in the source tarball (in `man/`). To install them: ```bash # Download the same version you have installed VERSION=$(signal-cli --version | head -1 | sed 's/^signal-cli //' | cut -d+ -f1) curl -Ls -o /tmp/signal-cli.tar.gz "https://github.com/AsamK/signal-cli/releases/download/v${VERSION}/signal-cli-${VERSION}.tar.gz" # Install to your local manpath (no sudo needed) mkdir -p ~/.local/share/man/man1 ~/.local/share/man/man5 tar -C ~/.local/share/man -xzf /tmp/signal-cli.tar.gz --strip-components=2 signal-cli-${VERSION}/man/man1/signal-cli.1.gz signal-cli-${VERSION}/man/man5/signal-cli-jsonrpc.5.gz signal-cli-${VERSION}/man/man5/signal-cli-dbus.5.gz # Update MANPATH (add to your ~/.bashrc or ~/.zshrc for persistence) export MANPATH="$HOME/.local/share/man:$MANPATH" # Test man signal-cli ``` For system-wide installation, extract to `/usr/local/share/man/` (requires sudo). ## Accessing man pages for my own reference When I need to reference signal-cli documentation, I can read the man pages directly: ```bash # If installed system-wide man signal-cli > /tmp/signal-cli.1.txt man signal-cli-jsonrpc > /tmp/signal-cli-jsonrpc.5.txt man signal-cli-dbus > /tmp/signal-cli-dbus.5.txt ``` I can then use `read` to load these into my context for quick lookup.


Security scan verdicts — ClawScan: clean | static analysis: clean | VirusTotal: suspicious | SkillSpector: clean (LOW)