Twilio for AI provides coding agents with skills and an MCP server for using Twilio services and documentation. The MCP server searches Twilio documentation and API specifications and retrieves full schemas for selected operations, while the skills supply procedural guidance to agents. Its catalogue add-ons are intended for Claude Code, Cursor, Codex, and other tools that support the Agent Skills standard.
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.
npx skills add twilio/ai --skill twilio-account-setupgit clone --depth 1 https://github.com/twilio/aiWrote 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/twilio/ai/twilio-account-setup)<a href="https://agentmods.dev/skills/twilio/ai/twilio-account-setup"><img src="https://agentmods.dev/badge/skills/twilio/ai/twilio-account-setup/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/twilio/ai/twilio-account-setup"><img src="https://agentmods.dev/badge/skills/twilio/ai/twilio-account-setup.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
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 Excessive Agency · line 221 Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 | $0.00133 | $0.02555 |
| Opus 5 | $0.00067 | $0.01277 |
| Sonnet 5 | $0.00027 | $0.00511 |
| Haiku 4.5 | $0.00013 | $0.00255 |
Grade A, and why
twilio-account-setup 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 9d 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.
How it starts
The opening of the file, as written. The whole thing — 270 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Overview
Every Twilio skill requires an active Twilio account and credentials. This skill covers the one-time setup steps that are prerequisites for all other Twilio skills.
Quickstart
- Sign up at twilio.com/try-twilio -- enter name, email, password
- Verify your email and personal phone number
- Get your credentials from Console > Account > API keys & tokens:
export TWILIO_ACCOUNT_SID=ACxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
export TWILIO_AUTH_TOKEN=your_auth_token
-
Buy a phone number at Console > Phone Numbers > Buy a number
-
Install the SDK and send your first message:
Python
pip install twilio
import os
from twilio.rest import Client
client = Client(os.environ["TWILIO_ACCOUNT_SID"], os.environ["TWILIO_AUTH_TOKEN"])
message = client.messages.create(
to="+15558675310", # must be verified on trial accounts
from_="+15017122661", # your Twilio number
body="Hello from Twilio!"
)
print(f"Sent: {message.sid}")
Node.js
npm install twilio
const twilio = require("twilio");
const client = twilio(process.env.TWILIO_ACCOUNT_SID, process.env.TWILIO_AUTH_TOKEN);
const message = await client.messages.create({
to: "+15558675310", // must be verified on trial accounts
from: "+15017122661", // your Twilio number
body: "Hello from Twilio!",
});
console.log(`Sent: ${message.sid}`);
You're ready to use any Twilio skill. Trial accounts have restrictions -- see Constraints below.
Key Patterns
Verify Recipient Numbers (trial accounts only)
Trial accounts can only send to verified phone numbers (up to 5 per account).
- Go to Console > Phone Numbers > Verified Caller IDs
- Click Add a new Caller ID and verify via SMS code
What ships with it
3 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.
- 9d ago First seen · 270 lines · 133 tokens per session scan A 8d509add5791
twilio-account-setup is a skill published in the GitHub repository twilio/ai (30 stars, last pushed 25d ago), licensed MIT. It adds 133 tokens to every session and 2,555 once invoked, about $0.0007 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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