Borrowing it
Nothing to install: this file belongs to taslim/nanoclaw-gws-ea. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/taslim/nanoclaw-gws-ea/main/.claude/skills/add-signal/SKILL.mdgit clone --depth 1 https://github.com/taslim/nanoclaw-gws-eaWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/taslim/nanoclaw-gws-ea/add-signal)<a href="https://agentmods.dev/skills/taslim/nanoclaw-gws-ea/add-signal"><img src="https://agentmods.dev/badge/skills/taslim/nanoclaw-gws-ea/add-signal/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/taslim/nanoclaw-gws-ea/add-signal"><img src="https://agentmods.dev/badge/skills/taslim/nanoclaw-gws-ea/add-signal.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00022 | $0.03167 |
| Opus 5 | $0.00011 | $0.01584 |
| Sonnet 5 | $0.00004 | $0.00633 |
| Haiku 4.5 | $0.00002 | $0.00317 |
Grade D, and why
add-signal scanned grade D with 4 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
- **Debian/Ubuntu:** `sudo apt-get install -y default-jre` Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
SIGNAL_CLI_VERSION=$(curl -fsSL https://api.github.com/repos/AsamK/signal-cli/releases/latest | python3 -c "import sys,json; print(json.load(sys.stdin)['tag_name'][1:])") Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
SIGNAL_CLI_VERSION=$(curl -fsSL https://api.github.com/repos/AsamK/signal-cli/releases/latest | python3 -c "import sys,json; print(json.load(sys.stdin)['tag_name'][1:])") Runs shell commandslowCapability
Expected in a hook, worth knowing in a rule or an instructions file.
Adds Signal messaging support via a native adapter that speaks JSON-RPC to a [signal-cli](https://github.com/AsamK/signal-cli) TCP daemon. No Chat SDK bridge — only Node.js builtins (`node:net`, `node:child_process`, `no How it starts
The opening of the file, as written. The whole thing — 332 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Add Signal Channel
Adds Signal messaging support via a native adapter that speaks JSON-RPC to a signal-cli TCP daemon. No Chat SDK bridge — only Node.js builtins (node:net, node:child_process, node:fs).
Unlike Telegram or Discord, Signal has no bot API. NanoClaw registers as a full Signal account on a dedicated phone number (recommended) or links as a secondary device on your existing number.
Prerequisites
Java
signal-cli requires Java 17+:
java -version
If missing:
- macOS:
brew install --cask temurin@17 - Debian/Ubuntu:
sudo apt-get install -y default-jre - RHEL/Fedora:
sudo dnf install -y java-17-openjdk
Java 17–25 all work.
signal-cli
- macOS:
brew install signal-cli - Linux: download the native binary from GitHub releases:
SIGNAL_CLI_VERSION=$(curl -fsSL https://api.github.com/repos/AsamK/signal-cli/releases/latest | python3 -c "import sys,json; print(json.load(sys.stdin)['tag_name'][1:])")
curl -fsSL "https://github.com/AsamK/signal-cli/releases/download/v${SIGNAL_CLI_VERSION}/signal-cli-${SIGNAL_CLI_VERSION}-Linux-native.tar.gz" \
| tar -xz -C ~/.local
ln -sf ~/.local/signal-cli ~/.local/bin/signal-cli
signal-cli --version
The Linux native tarball extracts a single binary directly to
~/.local/signal-cli(not into a subdirectory). The symlink above puts it on PATH.
Registration
Two paths. The new-number path is recommended and battle-tested.
Path A: Register a new number (recommended)
Use a dedicated SIM or VoIP number. NanoClaw owns it entirely.
VoIP numbers: Signal requires SMS verification before voice. Some VoIP providers are blocked even for voice calls. If registration fails with an auth error, try a different provider or a physical SIM.
Step 1: Solve the CAPTCHA
Signal requires a CAPTCHA on first registration:
- Open
https://signalcaptchas.org/registration/generate.htmlin a browser - Solve the captcha
- Right-click the "Open Signal" button → Copy Link
- The link starts with
signalcaptcha://— the token is everything after that prefix
What ships with it
2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 12d ago First seen · 332 lines · 22 tokens per session scan D e734692794c9
add-signal is a skill published in the GitHub repository taslim/nanoclaw-gws-ea (11 stars, last pushed 3mo ago), licensed MIT. It adds 22 tokens to every session and 3,167 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it D with 4 findings (asks for root, downloads and executes remote code, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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