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-regulatory-compliance-bundlesgit 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-regulatory-compliance-bundles)<a href="https://agentmods.dev/skills/twilio/ai/twilio-regulatory-compliance-bundles"><img src="https://agentmods.dev/badge/skills/twilio/ai/twilio-regulatory-compliance-bundles/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-regulatory-compliance-bundles"><img src="https://agentmods.dev/badge/skills/twilio/ai/twilio-regulatory-compliance-bundles.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 | $0.00070 | $0.01734 |
| Opus 5 | $0.00035 | $0.00867 |
| Sonnet 5 | $0.00014 | $0.00347 |
| Haiku 4.5 | $0.00007 | $0.00173 |
Grade B, and why
twilio-regulatory-compliance-bundles scanned grade B with 2 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.
Sends data to an external URLmediumData exfiltration
A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.
end_user = requests.post( "https://numbers.twilio.com/v2/RegulatoryCompliance/EndUsers", Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
regulations = requests.get( How it starts
The opening of the file, as written. The whole thing — 208 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Overview
Phone numbers are national resources — many countries require identity verification of the end-user before provisioning. A Regulatory Bundle is a container holding an End-User record + Supporting Documents that proves your right to use numbers in a specific country.
Not all countries require bundles — check the Regulatory Guidelines page for country-specific requirements. If a country requires a bundle, provisioning fails without one.
Key Concepts
| Resource | What it is |
|---|---|
| Regulation | Country-specific requirement defining what End-User types and document types are needed |
| Bundle | Container that holds an End-User + Supporting Documents for a specific regulation |
| End-User | The entity answering calls or receiving messages (individual or business type) |
| Supporting Document | Identity/address verification documents (business registration, proof of address, etc.) |
| Evaluation | Synchronous check that validates a bundle against its regulation before submission |
| Item Assignment | Links an End-User or Supporting Document to a Bundle |
Quickstart: Provision a Number with a Bundle
Step 1 — Query the Regulation
Find out what's required for the country and number type:
Python
import os, requests
account_sid = os.environ["TWILIO_ACCOUNT_SID"]
auth_token = os.environ["TWILIO_AUTH_TOKEN"]
# What does Germany require for local business numbers?
regulations = requests.get(
"https://numbers.twilio.com/v2/RegulatoryCompliance/Regulations",
params={"IsoCountry": "DE", "NumberType": "local", "EndUserType": "business"},
auth=(account_sid, auth_token)
).json()
for reg in regulations["results"]:
print(f"Regulation: {reg['sid']}")
print(f"Requirements: {reg['requirements']}")
Step 2 — Create an End-User
Python
end_user = requests.post(
"https://numbers.twilio.com/v2/RegulatoryCompliance/EndUsers",
data={
"FriendlyName": "Acme GmbH",
"Type": "business",
"Attributes": '{"business_name": "Acme GmbH", "business_registration_number": "HRB12345"}'
},
auth=(account_sid, auth_token)
).json()
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.
- 13d ago First seen · 208 lines · 70 tokens per session scan B c5877b728fb7
twilio-regulatory-compliance-bundles is a skill published in the GitHub repository twilio/ai (32 stars, last pushed 29d ago), licensed MIT. It adds 70 tokens to every session and 1,734 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 2 findings (sends data to an external url, 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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