Agent skill

Sandbox Twilio

Send SMS and WhatsApp messages and look up numbers from a Code node or CodeAct action, with NodeTool's Twilio request builder running on the host

AGPL-3.0Auto-check passedDocuments & Office

Install Sandbox Twilio

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-twilio --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/sandbox-packs/sandbox-twilio .claude/skills/sandbox-twilio && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "sandbox-twilio" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio into .claude/skills/sandbox-twilio/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-twilio", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-twilio --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .agents/skills && cp -r skills-src/packages/sandbox-packs/sandbox-twilio .agents/skills/sandbox-twilio && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "sandbox-twilio" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio into .agents/skills/sandbox-twilio/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-twilio", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-twilio --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/packages/sandbox-packs/sandbox-twilio .cursor/skills/sandbox-twilio && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "sandbox-twilio" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio into .cursor/skills/sandbox-twilio/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-twilio", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/nodetool-ai/nodetool.git --path packages/sandbox-packs/sandbox-twilio

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-twilio --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/packages/sandbox-packs/sandbox-twilio .gemini/skills/sandbox-twilio && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "sandbox-twilio" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio into .gemini/skills/sandbox-twilio/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-twilio", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-twilio

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .github/skills && cp -r skills-src/packages/sandbox-packs/sandbox-twilio .github/skills/sandbox-twilio && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "sandbox-twilio" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio into .github/skills/sandbox-twilio/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-twilio", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install nodetool-ai/nodetool sandbox-twilio --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/nodetool-ai/nodetool.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/packages/sandbox-packs/sandbox-twilio .opencode/skills/sandbox-twilio && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "sandbox-twilio" agent skill from https://github.com/nodetool-ai/nodetool/tree/main/packages/sandbox-packs/sandbox-twilio into .opencode/skills/sandbox-twilio/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "sandbox-twilio", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: sandbox-twilio
GitHub stars: 560
Token cost: ~740 tokens
SKILL.md length: 245 words
Files: 2
Skills in repo: 127
Repo updated: Oct 10, 2026
First seen: Oct 7, 2026
Licence: AGPL-3.0

At a glance

Send SMS and WhatsApp messages and look up numbers from a Code node or CodeAct action, with NodeTool's Twilio request builder running on the host

Documents & Office work in your project
SKILL.md covers request, WhatsApp, Reading messages and Number lookup, plus 1 more section
Needs TWILIO_AUTH_TOKEN

What it does

Sandbox Twilio is an agent skill from nodetool-ai/nodetool. Send SMS and WhatsApp messages and look up numbers from a Code node or CodeAct action, with NodeTool's Twilio request builder running on the host

Its SKILL.md is about 740 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `package.json`).

It sits in Documents & Office. It works with Twilio and WhatsApp. The repository describes itself as: Agent-first Creative Workspace. The licence is AGPL-3.0.

When your agent uses it

Documents & Office work in your project

Example prompts

“/sandbox-twilio”

Requirements

A credential in TWILIO_AUTH_TOKEN

What it can do on your machine

Read from SKILL.md and the folder at commit 339f069. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are javascript).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names these keys or tokens, usually read from environment variables:
- TWILIO_AUTH_TOKEN
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Sandbox Twilio loads about 740 tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 245 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~40
When it runs · the whole SKILL.md, loaded when a task matches: ~740

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from nodetool-ai/nodetool at commit 339f069, republished under its AGPL-3.0 licence (© nodetool-ai). 245 words, ~740 tokens.

Download SKILL.mdSave it as .claude/skills/sandbox-twilio/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: sandbox-twilio
description: Send SMS and WhatsApp messages and look up numbers from a Code node or CodeAct action, with NodeTool's Twilio request builder running on the host

Twilio in the sandbox

Specifier: @nodetool-ai/sandbox-twilio. Import it at the top of the body.

Twilio is HTTP Basic auth over form-encoded bodies, on a URL that buries the account SID in the path. None of that is hard; all of it is easy to get wrong once, and the failure is a 401 that names nothing.

Nothing here sends a request. request builds one; the guest's own fetch sends it, under the run's fetch cap and SSRF guard.

request

import { request } from "@nodetool-ai/sandbox-twilio";

const accountSid = await nodetool.secrets.get("TWILIO_ACCOUNT_SID");
const authToken = await nodetool.secrets.get("TWILIO_AUTH_TOKEN");

const req = await request({
  accountSid, authToken,
  path: "Messages.json",
  method: "POST",
  params: { To: inputs.to, From: inputs.from, Body: inputs.text }
});
const res = await fetch(req.url, req);
if (!res.ok) throw new Error(`Twilio: ${res.json.message ?? res.status}`);
return { sid: res.json.sid, status: res.json.status };

Options: accountSid and authToken (required), path (required), method (default GET), params, host (default api.twilio.com), query.

params become the form body on a write and the query string on a read.

A path without a leading slash is an Account resource and lands under /2010-04-01/Accounts/<sid>/. One with a leading slash is used as written, which is how the other products are reached.

Same endpoint; the numbers carry a whatsapp: prefix.

const req = await request({
  accountSid, authToken, path: "Messages.json", method: "POST",
  params: {
    To: `whatsapp:${inputs.to}`,
    From: `whatsapp:${inputs.from}`,
    Body: inputs.text
  }
});

Reading messages

const req = await request({
  accountSid, authToken, path: "Messages.json",
  params: { To: inputs.to, PageSize: 50 }
});
const { messages } = (await fetch(req.url, req)).json;

Number lookup

Lookup lives on its own host, so pass an absolute path:

const req = await request({
  accountSid, authToken,
  host: "lookups.twilio.com",
  path: `/v2/PhoneNumbers/${encodeURIComponent(inputs.phone)}`,
  params: { Fields: "line_type_intelligence" }
});

Gotchas

request is async. A host call is a round trip.
Parameter names are PascalCase. To, From, Body, MediaUrl — Twilio ignores what it does not recognize, so a lowercase body sends an empty message rather than an error.
Numbers are E.164. +15551234567, country code and all.
Only *.twilio.com hosts are accepted, so a mistyped host fails here rather than mailing credentials somewhere else.
An error is a non-2xx with JSON. Read res.json.message and res.json.code; the code maps to Twilio's error reference.

Files

SKILL.md and 1 other file in packages/sandbox-packs/sandbox-twilio of nodetool-ai/nodetool.

SKILL.md
package.json

Open the folder on GitHubat commit 339f069

Compare with similar skills

Sandbox Twilio next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Sandbox Twilio compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Sandbox Twilio this skillnodetool-ai/nodetool	560	—	~740	Automated safety check: Pass	AGPL-3.0	yesterday
Smscoreyhaines31/marketingskills	54k	1 repos	~4.6k	Automated safety check: Pass	MIT	2 days ago
Mira Historysandeco/mira-animator	218	—	~4k	Automated safety check: Pass	Custom licence	26 days ago
Twilio Communicationsdavila7/claude-code-templates	33k	5 repos	~2.3k	Automated safety check: Pass	MIT	today
Twilio Communicationssickn33/agentic-awesome-skills	47k	2 repos	~453	Automated safety check: Pass	MIT	2 days ago
Add PDF Readersbusso/claudeclaw	194	—	~767	Automated safety check: Pass	MIT	1 mo ago

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Works with

Questions about Sandbox Twilio

What does Sandbox Twilio do?

Send SMS and WhatsApp messages and look up numbers from a Code node or CodeAct action, with NodeTool's Twilio request builder running on the host. Sandbox Twilio is an agent skill from nodetool-ai/nodetool.

When should I use Sandbox Twilio?

Sandbox Twilio fits situations like: documents & Office work in your project.

How do I install Sandbox Twilio in Claude Code?

Run `npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a claude-code`. Or copy the skill folder (packages/sandbox-packs/sandbox-twilio in nodetool-ai/nodetool) into .claude/skills/sandbox-twilio in your project. Claude Code loads it when a task matches its description.

How do I install Sandbox Twilio in Codex?

Run `npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a codex`. Or copy the skill folder (packages/sandbox-packs/sandbox-twilio in nodetool-ai/nodetool) into .agents/skills/sandbox-twilio in your project. Codex loads it when a task matches its description.

Can I use Sandbox Twilio in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add nodetool-ai/nodetool --skill sandbox-twilio -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/sandbox-twilio, .gemini/skills/sandbox-twilio, .github/skills/sandbox-twilio and .opencode/skills/sandbox-twilio in your project.

What does Sandbox Twilio need to run?

Going by SKILL.md and its folder, Sandbox Twilio needs credentials named TWILIO_AUTH_TOKEN. Our summary lists: A credential in TWILIO_AUTH_TOKEN.

Does Sandbox Twilio access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Sandbox Twilio safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Sandbox Twilio use?

Sandbox Twilio is published under the AGPL-3.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Sandbox Twilio use?

About 740 tokens (SKILL.md is roughly 3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Sandbox Twilio?

Skills that share tags, products or a category with Sandbox Twilio: Sms (coreyhaines31/marketingskills, 54k stars), Mira History (sandeco/mira-animator, 218 stars), Twilio Communications (davila7/claude-code-templates, 33k stars) and Twilio Communications (sickn33/agentic-awesome-skills, 47k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Sandbox Twilio?

nodetool-ai (a GitHub organization) maintains it in nodetool-ai/nodetool, which has 560 GitHub stars. The repository holds 127 skills in this directory. The repository was last updated on October 10, 2026.

Source: nodetool-ai/nodetool on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Sandbox Twilio

Facts

At a glance

What it does

When your agent uses it

Example prompts

Requirements

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Twilio in the sandbox

request

WhatsApp

Reading messages

Number lookup

Gotchas

Files

Compare with similar skills

Similar skills

More from nodetool-ai/nodetool

Related

Questions about Sandbox Twilio