Overview
add-signal is an open-source productivity skill for Claude Code and compatible agents, published by nanocoai. Its author describes it as: “Add Signal channel integration via signal-cli device-link. Native adapter — no Chat SDK bridge.”. The project has 31k stars on GitHub and is available under the MIT license. Add it to your setup with `git clone https://github.com/nanocoai/nanoclaw ~/.claude/skills/add-signal`.
What add-signal does
Adds Signal support via a native adapter that speaks JSON-RPC to a signal-cli daemon — no Chat SDK bridge, only Node.js builtins. NanoClaw links to Signal as a *secondary device* on your existing phone: no new number, no bot API. Your assistant sends and receives as the number on the phone that scans the link.
What’s inside
The SKILL.md for add-signal is organised into these sections:
- Apply
- 1. Install signal-cli
- 2. Copy the adapter and its registration test
- 3. Register the adapter
- 4. Install the QR-rendering dependency
- 5. Build and validate
- Link your Signal account
- Persist the account
- Restart
- Wiring
- DMs
- Groups
Installation
Add add-signal to your agent with:
git clone https://github.com/nanocoai/nanoclaw ~/.claude/skills/add-signalReview a skill’s source before installing it — skills can instruct your agent to run commands. This command comes from the skill’s public repository, which is the source of truth for setup steps. New to skills? Read how to install Claude Code skills.
Supported agents
- Claude Code — declared in the repository topics
License
add-signal is published under the MIT license.
Strengths
- Clear MIT license — safe to read and adapt within its terms
- Ships in nanocoai/nanoclaw, an established project with 30,542 GitHub stars
- Works with Claude Code
- Actively maintained — repository updated in the last 90 days
Author
Topics
Frequently asked questions
- What does add-signal do?
- Add Signal channel integration via signal-cli device-link. Native adapter — no Chat SDK bridge.
- How do I install add-signal?
- Run git clone https://github.com/nanocoai/nanoclaw ~/.claude/skills/add-signal in your agent, then reload your skills. Review the source at https://github.com/nanocoai/nanoclaw before installing.
- Is add-signal free to use?
- Yes. add-signal is free and open source under the MIT license, so you can read, run, and adapt it within that license's terms.
- Which agents does add-signal work with?
- add-signal lists Claude Code — named in its SKILL.md, its plugin marketplace or its repository topics. Skills use the portable SKILL.md format, so other agents that read that format may load it too.
- Where does add-signal come from?
- add-signal ships inside nanocoai/nanoclaw, a repository that contains 41 catalogued skills in total. The repository's 30,542 GitHub stars apply to that whole collection, not to this skill on its own.