twilio

twilio is a skill for Claude Code, Codex from tallclub/matimo. It costs 27 tokens per session (1,928 once invoked), scanned A, original, MIT.

A set of tools for sending and managing SMS and MMS messages through Twilio, a service for programmatic phone messaging.

In plain words
What is it for?
Use it to send text messages or media messages, check a message by its Twilio ID, list messages, and receive delivery updates through a callback URL.
Why use it?
It avoids manually sending texts and checking delivery status when messages need to be handled from code or an agent.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to send text messages or media messages, check a message by its Twilio ID, list messages, and receive delivery updates through a callback URL.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/tallclub/matimo/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 tallclub/matimo --skill twilio
Clone the repo
git clone --depth 1 https://github.com/tallclub/matimo

Made for: Claude Code, Codex.

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/tallclub/matimo/twilio/github.svg)](https://agentmods.dev/skills/tallclub/matimo/twilio)
Your own site
<a href="https://agentmods.dev/skills/tallclub/matimo/twilio"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/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/tallclub/matimo/twilio"><img src="https://agentmods.dev/badge/skills/tallclub/matimo/twilio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 27 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,928 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 warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Data Exfiltration · line 83
    Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
    Fix: Verify the destination URL is trusted and necessary. Remove or replace with documented APIs. Ensure no secrets, tokens, or PII are transmitted.
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 $0.00027 $0.01928
Opus 5 $0.00014 $0.00964
Sonnet 5 $0.00005 $0.00386
Haiku 4.5 $0.00003 $0.00193

Measured 8d ago against content hash 435be5fe6335, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, 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 8d 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.

typescript/packages/twilio/skills/twilio/SKILL.md · 251 lines

How it starts

The opening of the file, as written. The whole thing — 251 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Twilio

This skill teaches you how to send, track, and manage SMS and MMS messages using the Twilio Programmable Messaging API through Matimo tools.

Tools You Will Use

Tool Purpose
twilio-send-sms Send a text message
twilio-send-mms Send a message with media attachments
twilio-get-message Check message status by SID
twilio-list-messages List sent/received messages

Sending an SMS

Use twilio-send-sms to send a text message to any phone number.

Required Parameters

Parameter Type Description
account_sid string Twilio Account SID (e.g., ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx)
to string Recipient phone number in E.164 format (e.g., +15558675310)
from string Your Twilio phone number in E.164 format (e.g., +15557122661)
body string Message text (up to 1,600 characters)

Optional Parameters

Parameter Type Description
status_callback string URL to receive delivery status webhooks

Best Practices

  1. Always use E.164 format for phone numbers: + followed by country code and number (e.g., +14155551234). No spaces, dashes, or parentheses.
  2. Keep SMS under 160 characters for single-segment delivery. Messages over 160 GSM-7 characters are split into segments and each is billed separately.
  3. Include opt-out language for marketing: "Reply STOP to unsubscribe" — required by carrier regulations.
  4. Use status_callback for critical messages to track delivery confirmation.
  5. Never send to unverified numbers on trial accounts — Twilio trial restricts to verified numbers only.

E.164 Phone Number Format

Country Example
US/Canada +14155551234
UK +447911123456
Australia +61412345678
India +919876543210

Example: Simple SMS

{
  "account_sid": "ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
  "to": "+15558675310",
  "from": "+15557122661",
  "body": "Your appointment is confirmed for tomorrow at 2pm. Reply YES to confirm or CANCEL to reschedule."
}

Read the full file on GitHub · 251 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. 8d ago First seen · 251 lines · 27 tokens per session scan A 435be5fe6335

Subscribe to this mod's changes

twilio is a skill published in the GitHub repository tallclub/matimo (11 stars, last pushed 5d ago), licensed MIT. It adds 27 tokens to every session and 1,928 once invoked, about $0.0001 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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