twilio

twilio is a skill for Claude Code, Codex from ashish7802/awesome-api-skills. It costs 0 tokens per session (430 once invoked), scanned A, original, MIT.

A programmable service for sending SMS messages and handling voice calls from applications. It uses webhooks to notify your server about incoming events and delivery updates.

In plain words
What is it for?
Use it to send text messages, route calls, receive inbound events, and validate that webhook requests came from Twilio.
Why use it?
It removes the need to operate direct telecommunications connections and gives applications a way to track message or call status.

Skill for Claude CodeCodex

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

Good fit Use it to send text messages, route calls, receive inbound events, and validate that webhook requests came from Twilio.

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Install with agentmods
npx agentmods add skills/ashish7802/awesome-api-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 ashish7802/awesome-api-skills --skill twilio
Clone the repo
git clone --depth 1 https://github.com/ashish7802/awesome-api-skills

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/ashish7802/awesome-api-skills/twilio/github.svg)](https://agentmods.dev/skills/ashish7802/awesome-api-skills/twilio)
Your own site
<a href="https://agentmods.dev/skills/ashish7802/awesome-api-skills/twilio"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-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/ashish7802/awesome-api-skills/twilio"><img src="https://agentmods.dev/badge/skills/ashish7802/awesome-api-skills/twilio.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 430 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 $0.00000 $0.00430
Opus 5 $0.00000 $0.00215
Sonnet 5 $0.00000 $0.00086
Haiku 4.5 $0.00000 $0.00043

Measured 9d ago against content hash bd0ed3f1f26c, 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 9d ago.

The scan reads SKILL.md. This mod also ships 5 executable files (examples/basic.ts, examples/example.py, examples/example.ts, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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 · 60 lines

What it actually says

Twilio API Skill

Overview

Twilio provides programmable communication tools. This skill details the SMS and Voice APIs, emphasizing webhooks for incoming messages and TwiML for call routing.

Installation

npm install twilio
pip install twilio

Authentication

Authenticate using Account SID and Auth Token. Keep these strictly server-side.

Core Concepts

  • TwiML: XML-based language that instructs Twilio on how to handle calls and SMS.
  • Message SID: Unique identifier for tracking message delivery status.

Common Workflows

  1. Instantiate Twilio client.
  2. Call messages.create with to, from, and body.
  3. Poll or use status webhooks to confirm delivery.

Error Handling

Handle the TwilioRestException. Code 21211 means 'Invalid 'To' Phone Number'. Handle gracefully in the UI.

Security

Validate incoming webhooks using twilio.validateRequest to ensure requests actually originated from Twilio.

Rate Limits

Standard SMS throughput is 1 message per second per long code. Toll-free and short codes have higher limits.

Best Practices

Use Messaging Services instead of hardcoded numbers to automatically handle compliance, opt-outs, and sender ID rotation.

Troubleshooting

If international SMS fails, check your Geo-Permissions in the Twilio Console.

References

Why use this skill

Use this when your agent works with twilio — structured patterns beat pasted docs and prevent common hallucinations.

AI pitfalls

  • Using outdated SDK or API versions from training data
  • Inventing environment variable names
  • Omitting error handling and retry logic

Production checklist

  • Secrets in environment variables, not source code
  • Error handling and logging in place
  • Rate limits and timeouts configured

Last Verified: 2026-07-02

Files

What ships with it

8 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.

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. 9d ago First seen · 60 lines · 0 tokens per session scan A bd0ed3f1f26c

Subscribe to this mod's changes

twilio is a skill published in the GitHub repository ashish7802/awesome-api-skills (13 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 430 tokens. 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 2026-09-03.

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