What this skill does
Send Signal messages and look up Signal recipients via the local signal-cli installation on macOS. Use when the user asks to message someone on Signal, send a Signal text/attachment, list Signal contacts, or resolve a recipient by name/nickname/phone number.
Signal CLI is part of the Other Skills category — OpenClaw skills that extend your agent with new capabilities. You can install it on its own or alongside other other skills skills from the OpenClaw catalog.
How to install Signal CLI
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
signal-cliand click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add Signal CLI with a single command:
openclaw skills add signal-cli
This pulls signal-cli from ClawHub and installs it into ~/.openclaw/skills/signal-cli/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use Signal CLI
Once installed, Signal CLI activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
signal-cli-0.1.0.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/signal-cli/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install Signal CLI?
Install Signal CLI in the OpenClaw Easy desktop app by opening the Skills panel, searching for signal-cli, and clicking Install. From a terminal you can run: openclaw skills add signal-cli. Either way the skill is placed in ~/.openclaw/skills/signal-cli/.
Is Signal CLI free?
Yes. Signal CLI is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does Signal CLI do?
Send Signal messages and look up Signal recipients via the local signal-cli installation on macOS. Use when the user asks to message someone on Signal, send a Signal text/attachment, list Signal contacts, or resolve a recipient by name/nickname/phone number.
Related: more other skills skills
If Signal CLI looks useful, you may also want to check out other other skills skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models