twilio

twilio is a skill for Claude Code from hyperfx-ai/marketing-skills. It costs 45 tokens per session (902 once invoked), scanned A, original, MIT.

A toolkit for sending messages, making calls, managing phone numbers, and handling verification through Twilio, a communications service.

In plain words
What is it for?
Use it to send SMS or WhatsApp messages, check delivery, make voice calls, manage numbers, and run OTP verification.
Why use it?
It keeps SMS, WhatsApp, voice, phone-number, and one-time-password workflows in one place and includes the required WhatsApp sandbox setup for testing.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the hyper-marketing plugin — 30 skills, 1 MCP server shipped together

Good fit Use it to send SMS or WhatsApp messages, check delivery, make voice calls, manage numbers, and run OTP verification.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/hyperfx-ai/marketing-skills/twilio
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add hyperfx-ai/marketing-skills --skill twilio
Clone the repo
git clone --depth 1 https://github.com/hyperfx-ai/marketing-skills

Made for: Claude Code.

Or install hyper-marketing, the plugin that ships this one along with the rest of its 30 skills, 1 MCP server.

Wrote 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.

agentmods badge for twilio

README.md
[![agentmods](https://agentmods.dev/badge/skills/hyperfx-ai/marketing-skills/twilio/github.svg)](https://agentmods.dev/skills/hyperfx-ai/marketing-skills/twilio)
Your own site
<a href="https://agentmods.dev/skills/hyperfx-ai/marketing-skills/twilio"><img src="https://agentmods.dev/badge/skills/hyperfx-ai/marketing-skills/twilio/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.

agentmods 80×15 button for twilio

Your own site · 80×15
<a href="https://agentmods.dev/skills/hyperfx-ai/marketing-skills/twilio"><img src="https://agentmods.dev/badge/skills/hyperfx-ai/marketing-skills/twilio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 902 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00045 $0.00902
Opus 5 $0.00023 $0.00451
Sonnet 5 $0.00009 $0.00180
Haiku 4.5 $0.00005 $0.00090

Measured 13d ago against content hash 846cf5bbd481, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

twilio scanned grade A with 0 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 13d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/twilio/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Twilio Communications

Use this skill for all Twilio tasks including SMS, WhatsApp, voice calls, and verification.

Requirements

WhatsApp Sandbox Setup (Required for Testing)

Before sending WhatsApp messages in sandbox/testing mode, users must join the sandbox:

  1. User goes to: https://console.twilio.com/us1/develop/sms/try-it-out/whatsapp-learn
  2. They find their unique join code (e.g., "join happy-turtle")
  3. They send that message from WhatsApp to +14155238886
  4. Once confirmed, use twilio_whatsapp_send with from_number set to "+14155238886"

If WhatsApp message fails with "not a valid WhatsApp-enabled number" or similar:

  • The user likely hasn't joined the sandbox yet
  • Guide them through the steps above

Tool Quick Reference

Messaging

  • twilio_sms_send - Send SMS/MMS messages
  • twilio_whatsapp_send - Send WhatsApp messages (sandbox: use +14155238886 as from_number)
  • twilio_messages_list - List message history
  • twilio_messages_delivery_status_check - Check if message was delivered

Voice Calls

  • twilio_calls_create - Initiate outbound call (requires TwiML URL or inline TwiML)
  • twilio_calls_list - List call history
  • twilio_recordings_list - List call recordings

Phone Numbers

  • twilio_phone_numbers_list - List numbers in account (use to find valid from_number)
  • twilio_phone_numbers_lookup - Validate phone number and get carrier info

Verification (OTP)

  • twilio_verification_services_create - Create verification service first
  • twilio_verifications_send - Send OTP code
  • twilio_verifications_check - Verify user's code

Common Patterns

Before sending SMS/WhatsApp: Call twilio_phone_numbers_list first to find a valid sender number.

WhatsApp sandbox flow:

  1. Confirm user has joined sandbox (provide instructions if not)
  2. Call twilio_whatsapp_send with:
{
  "to": "+1XXXXXXXXXX",
  "body": "Hello from the assistant",
  "from_number": "+14155238886"
}

Read the full file on GitHub · 116 lines

Changes

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.

  1. 13d ago First seen · 116 lines · 45 tokens per session scan A 846cf5bbd481

Subscribe to this mod's changes

twilio is a skill published in the GitHub repository hyperfx-ai/marketing-skills (86 stars, last pushed today), licensed MIT. It adds 45 tokens to every session and 902 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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