Twilio Developer Kit plugin for Codex

Official OpenAI curatedPluginDeveloper Tools

Procedural knowledge that guides AI coding agents to the right Twilio APIs for any use case. Covers channel selection, production best practices, compliance requirements, and common pitfalls across Messaging, Voice, Verify, SendGrid, and 30+ products. Skills follow a progressive disclosure architecture — your agent sees lightweight metadata at startup and loads full guidance only when a task matches.

How to install Twilio Developer Kit in Codex

codex plugin add twilio-developer-kit@openai-curated

Command format from the Codex CLI reference (codex plugin add <plugin[@marketplace]>); openai-curated is the marketplace name in OpenAI's catalog file. You need to be signed in to Codex. Source: Codex CLI reference.

Or in Codex CLI type /plugins and pick it from the OpenAI curated marketplace; in the ChatGPT desktop app, open the Plugins tab. Start a new session afterwards so the plugin's skills and tools load. (OpenAI plugin docs)

What it contains

Skills (55)

  • twilio-account-setup — > Create and configure a Twilio account from scratch. Covers free trial signup, trial limitations, getting credentials (Account SID and Auth Token), buying a phone number, verifying recipient numbers for trial use, SDK installation, first API call…
  • twilio-agent-augmentation-architect — > Planning skill for augmenting human agents with real-time AI intelligence. Qualifies the developer's use case across coaching, compliance, QA, and routing to recommend the right Conversation Intelligence + Conversation Memory + TaskRouter architecture…
  • twilio-agent-connect — > Use when building or integrating Twilio Agent Connect (TAC) to connect third-party LLM agent runtimes with Twilio Voice, Messaging, ConversationRelay, Conversation Memory, Conversation Orchestrator, or Enterprise Knowledge.
  • twilio-ai-agent-architect — > Planning skill for AI-powered conversational agents. Qualifies the developer's use case across outcome sophistication, entry point, and customer profile to recommend the right Twilio Conversations architecture and implementation skills. Handles both…
  • twilio-call-recordings — > Record Twilio voice calls correctly. Covers the critical distinction between Record verb (voicemail) and Dial record (call recording), dual-channel for QA, mid-call pause for PCI, Conference recording, and the ConversationRelay workaround. Use this skill…
  • twilio-cli-reference — > Twilio CLI reference for managing Twilio resources from the terminal. Covers installation, credential profiles, phone number provisioning, sending SMS and email, webhook configuration, local development with a tunneling service, debugging with watch and…
  • twilio-compliance-onboarding — > Registrations required BEFORE Twilio traffic works. Covers messaging programs (A2P 10DLC, toll-free verification, WhatsApp WABA, RCS, short code, alphanumeric sender) and voice trust programs (STIR/SHAKEN, Voice Integrity, Branded Calling, CNAM). Each…
  • twilio-compliance-traffic — > Rules you must follow for Twilio messaging and voice traffic. Covers TCPA (consent tiers, quiet hours, DNC), GDPR (EU consent, right to deletion), PCI DSS (payment recording, Pay verb), HIPAA (BAA, PHI), FDCPA (debt collection limits), CAN-SPAM, WhatsApp…
  • twilio-conference-calls — > Build multi-party calls using Twilio Conference. Covers warm transfer, cold transfer, coaching (whisper), hold vs mute, participant modes, and supervisor barge. Use this skill for any contact center, support line, or scenario requiring transfers, holds, or…
  • twilio-content-template-builder — > Create, manage, and send message templates using Twilio's Content API. Covers template creation for WhatsApp, SMS, RCS, and MMS; variable usage; WhatsApp Meta approval; and sending templates via ContentSid. Use this skill when building structured messages…
  • conversation-intelligence — Twilio Conversation Intelligence development guide. Use when building real-time or post-call conversation analysis, language operator pipelines, sentiment analysis, agent assist, cross-channel analytics, or querying aggregated conversation insights…
  • twilio-conversation-orchestrator — > Configure automatic conversation capture and routing with Twilio Conversation Orchestrator. Covers Configuration creation, channel capture rules, grouping types, status timeouts, Memory Store linkage, Intelligence linkage, and conversation lifecycle. Use…
  • twilio-conversations-classic-api — > Build multi-channel messaging experiences using Twilio Conversations (classic) API. Covers creating conversations, adding participants (SMS, WhatsApp, chat), sending messages, and handling webhooks. Use this skill to manage persistent multi-party or…
  • twilio-customer-memory — > Store and retrieve customer context using Twilio Conversation Memory. Covers Memory Store provisioning, profile management, traits, observations, conversation summaries, and semantic Recall. Use this skill to give AI agents or human agents persistent…
  • twilio-customer-support-architect — > Planning skill for building customer service and support systems. Qualifies the developer's needs across the support ladder (self-service → AI agents → contact center), channel mix, and scale to recommend the right Twilio architecture. Handles both "build…
  • twilio-debugging-observability — > Debug Twilio integrations and set up production observability. Covers the Console Debugger, Monitor Alerts API, Event Streams for error log streaming, status callback tracking, common error codes, and a systematic debugging workflow. Use this skill…
  • twilio-email-deliverability-advisor — > Deliverability advisor for the Twilio Email API specifically. Use ONLY when the developer explicitly mentions Twilio Email, comms.twilio.com, or a Twilio (non-SendGrid) email program. For all other deliverability questions — including generic ones — use…
  • twilio-email-send — > Use when the caller has Twilio credentials (Account SID + Auth Token or API Key SID + Secret) and needs to send email via comms.twilio.com/v1/Emails. This is Twilio-native email — NOT SendGrid. Do NOT use if the caller has a SendGrid API key (SG.-prefix) …
  • twilio-enterprise-knowledge — > Add knowledge retrieval to AI agents using Twilio's Enterprise Knowledge product. Enterprise Knowledge is a centralized, searchable repository of your organization's documents, websites, and content — FAQs, support policies, warranty terms, product…
  • twilio-iam-auth-setup — > Set up and manage Twilio authentication credentials: Auth Tokens, API keys (Standard, Main, Restricted), Access Tokens for client-side SDKs, and credential rotation. Use this skill as a prerequisite foundation before making any Twilio API calls.
  • twilio-identity-verification-advisor — > Planning skill for identity verification and fraud prevention. Qualifies the developer's needs across authentication method, channel selection, fraud risk level, and user experience to recommend the right Twilio Verify + Lookup architecture. Handles login…
  • twilio-lookup-phone-intelligence — > Look up phone number intelligence via Twilio Lookup v2 API. Covers number validation, line type detection (mobile/landline/VoIP), SIM swap detection, caller name, identity match, and SMS pumping risk scoring. Use this skill to validate numbers or assess…
  • twilio-marketing-promotions-advisor — > Planning skill for marketing and promotional messaging. Qualifies the developer's campaign needs across channel selection, compliance, audience segmentation, and delivery tracking to recommend the right Twilio messaging architecture. Handles both "set up a…
  • twilio-messaging-channel-advisor — > Planning skill that helps the developer pick the right Twilio messaging channel — SMS, MMS, RCS, or WhatsApp — for a given use case. Qualifies intent across content type, geography, use case (marketing / notifications / OTP / support), cost model, and…
  • twilio-messaging-overview — > Twilio Messaging channel overview and onboarding guide. Covers all channels (SMS, WhatsApp, RCS, Facebook Messenger), the unified Messages API, channel selection guidance, and the recommended setup sequence from first message to production monitoring…
  • twilio-messaging-services — > Create and configure Twilio Messaging Services for production messaging. Covers sender pools, geo-match, sticky sender, message scheduling, compliance toolkit, SMS pumping protection, link shortening, and intelligent alerts. Use this skill when setting up…
  • twilio-messaging-webhooks — > Receive and respond to inbound messages and track outbound delivery status via Twilio webhooks — across SMS, MMS, WhatsApp, and RCS. Covers webhook request parameters, replying with TwiML, validating webhook signatures for security, and handling status…
  • twilio-notifications-alerts-advisor — > Planning skill for transactional notifications, alerts, and reminders. Qualifies the developer's needs across urgency, channel selection, delivery confirmation, and fallback patterns to recommend the right Twilio notification architecture. Handles both…
  • twilio-numbers-senders — > Choose the right Twilio number type and sender BEFORE building. Covers phone numbers (local, toll-free, short code, mobile), alphanumeric sender IDs, WhatsApp senders, RCS agents, international availability, and regulatory bundles. Each number type has its…
  • twilio-organizations-setup — > Set up and manage Twilio Organizations for centralized account and user governance. Covers the Organization > Account > Subaccount hierarchy, roles (Owner/Admin/Standard), managed vs independent accounts, domain registration, SSO enforcement, SCIM…
  • twilio-rcs-messaging — > Send RCS Business Messages via Twilio. Covers compliance onboarding (7-part US process), sender profile setup, sending rich cards and carousels, SMS fallback, device support (Android + iOS 18 caveats), and common errors. Use this skill when building RCS…
  • twilio-regulatory-compliance-bundles — > Manage regulatory compliance for international phone numbers. Covers what bundles are, which countries require them, how to create End-Users and Supporting Documents, evaluate and submit bundles, fix evaluation failures, update bundles when regulations…
  • twilio-reliability-patterns — > Handle rate limits, retries, and failures when building on Twilio at scale. Covers 429 exponential backoff with jitter, per-number throughput limits, StatusCallback resilience, thin-receiver pattern, and fallback chains. Use this skill whenever sending…
  • twilio-security-api-auth — > Choose the right Twilio authentication method and implement it correctly. Covers Auth Token (testing only), API Keys (production standard), OAuth2 client_credentials (time-limited bearer tokens), Access Tokens (client-side SDKs), and test credentials. Use…
  • twilio-security-compliance-hipaa — > Configure Twilio accounts for HIPAA compliance. Covers BAA requirements, HIPAA Project designation (self-service and support), eligible services list, per-product requirements (Voice, SMS, ConversationRelay, Conversation Intelligence, Flex, Verify)…
  • twilio-security-hardening — > Secure Twilio applications against common attacks. Covers credential management (API keys vs auth tokens), request validation (webhook signature verification), PCI DSS compliance, HIPAA account requirements, SMS pumping prevention, geo-permissions, and…
  • twilio-send-message — > Send messages via Twilio's Programmable Messaging API across all channels — SMS, MMS, RCS, and WhatsApp. Covers text messages, media, rich content (cards, carousels, buttons), template-based sends, Messaging Services, status callbacks, and WhatsApp's…
  • twilio-sendgrid-account-setup — > Set up a SendGrid account for email delivery. Covers API key creation (SG.-prefix), domain authentication (DKIM/SPF via CNAME records), Single Sender Verification for testing, SDK installation, and the relationship between SendGrid and Twilio credentials…
  • twilio-sendgrid-deliverability-advisor — > Diagnostic and advisory skill for email deliverability problems. Use when a developer asks why emails are going to spam, not reaching the inbox, getting blocked, bouncing, or how to improve sender reputation — with or without a specified platform. Covers…
  • twilio-sendgrid-email-send — > Send transactional and bulk email via the SendGrid v3 Mail Send API. Covers single sends, personalized batch sends with dynamic templates, scheduled sends with cancellation, attachments, and sandbox mode for testing. Use this skill when the caller has a…
  • twilio-sendgrid-email-settings — > Configure SendGrid dynamic templates (Handlebars), tracking settings (opens, clicks, subscriptions), link branding for custom tracking domains, and content types (HTML, plain text, AMP). Use when customizing SendGrid email content, tracking behavior, or…
  • twilio-sendgrid-engagement-quality — > Monitor email program health with SendGrid Engagement Quality (SEQ) scores. Covers the SEQ API endpoints, the 5 scoring metrics (engagement recency, open rate, bounce classification, bounce rate, spam rate), eligibility requirements, and interpreting…
  • twilio-sendgrid-inbound-parse — > Receive inbound email via SendGrid Inbound Parse webhook. Covers MX record setup, parsed vs raw mode, handling attachments, and common pitfalls. Use when building email-to-app workflows like support ticket creation or email processing pipelines. Requires a…
  • twilio-sendgrid-suppressions — > Manage SendGrid email suppressions: bounces, blocks, spam reports, invalid emails, global unsubscribes, and ASM suppression groups. Covers when and how to remove suppressions, reputation impact, and category-based unsubscribe management. Use when debugging…
  • twilio-sendgrid-webhooks — > Track email delivery and engagement via SendGrid Event Webhooks. Covers all 11 event types (delivery + engagement), webhook handler implementation, ECDSA signature verification, batched event processing, and common debugging patterns. Use when building…
  • twilio-isv-sms-best-practices — > Best practices for ISVs (Independent Software Vendors) building SMS features into multi-tenant SaaS platforms using Twilio. Covers customer onboarding for A2P and toll-free compliance, subaccount architecture, sender management, billing patterns, and…
  • twilio-sms-send-message — > SMS and MMS deep-dive reference. Covers SMS-specific error codes, message filtering troubleshooting ("Messages Being Filtered or Blocked?" diagnostic checklist), MMS media support (US/CA/AU only), and SMS pumping indicators. For sending SMS, use…
  • twilio-taskrouter-routing — > Route tasks to agents using Twilio TaskRouter. Covers Workers, Task Queues, Workflows, Reservations, skills-based routing, and common gotchas (hyphen attributes, HAS operator, reservation cascade). Use this skill for any multi-agent contact center, support…
  • twilio-verify-send-otp — > Send and verify one-time passcodes (OTPs) via Twilio Verify over SMS, RCS, voice, email, or WhatsApp. Covers creating a Verify Service, sending tokens, checking submitted codes, automatic WhatsApp-to-SMS fallback, and service configuration. TOTP is…
  • twilio-voice-conversation-relay — > Build AI-powered voice agents using Twilio ConversationRelay. Handles real-time speech recognition (ASR), text-to-speech (TTS), and bidirectional audio streaming via WebSocket. Covers TwiML setup, WebSocket message types, LLM integration, streaming…
  • twilio-voice-outbound-calls — > Make outbound phone calls via Twilio's Programmable Voice REST API. Covers the full voice platform: calls.create(), answering machine detection (AMD), conference-based agent bridging, call recording, status tracking, and SIP Trunking. Use this skill for…
  • twilio-voice-twiml — > Build voice call logic using TwiML (Twilio Markup Language). Covers the core verbs (Say, Play, Gather, Dial, Record, Conference), generating TwiML with Python and Node.js SDKs, and a complete inbound call IVR example. Use this skill to define call behavior…
  • twilio-webhook-architecture — > Design, secure, and operate Twilio webhook endpoints. Covers inbound event handling, status callbacks, signature validation, connection overrides for retry and timeout tuning, local development tunneling, and production hardening. Use this skill whenever…
  • twilio-whatsapp-manage-senders — > Create, configure, and manage WhatsApp Business senders via Twilio's Channels Senders API. Covers programmatic sender registration, profile setup, webhook configuration, sender lifecycle statuses, and ISV flows. Use this skill to register and manage…
  • twilio-whatsapp-send-message — > WhatsApp messaging deep-dive reference. Covers the 24-hour service window rules (free-form vs template mode), sandbox setup for testing, template approval workflow, production sender requirements, and WhatsApp-specific error handling. For sending WhatsApp…

Example prompts from the manifest

  • Help me send an SMS notification with delivery tracking
  • What Twilio API should I use to build a user verification flow?
  • How do I register for A2P 10DLC before sending US SMS?

About this listing

Twilio Developer Kit is in OpenAI's official curated Codex plugin catalog, published by Twilio. It shows up in the Codex CLI plugin browser (/plugins) and in the ChatGPT desktop app's Plugins tab. From its files we found 55 skills. The manifest says version 0.2.2. It's one of 79 listings in the Developer Tools category.

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Twilio Developer Kit FAQ

How do I install Twilio Developer Kit in Codex?

Run codex plugin add twilio-developer-kit@openai-curated (format from the Codex CLI reference). Or in Codex CLI type /plugins and pick it from the OpenAI curated marketplace; in the ChatGPT desktop app, open the Plugins tab. Start a new session afterwards so the plugin's skills and tools load.

Is Twilio Developer Kit an official Codex plugin?

Yes. Twilio Developer Kit is in OpenAI's official curated Codex plugin catalog (marketplace openai-curated), published by Twilio. It appears in the Codex CLI plugin browser and the ChatGPT desktop app's Plugins tab.

What does Twilio Developer Kit include?

From its files in OpenAI's plugin repo, Twilio Developer Kit includes 55 skills: twilio-account-setup, twilio-agent-augmentation-architect, twilio-agent-connect, twilio-ai-agent-architect, twilio-call-recordings, twilio-cli-reference….

Details

Type
Plugin
Category
Developer Tools
Source
Official OpenAI curated
Publisher
Twilio
Version
0.2.2
License
MIT
Sign-in
Asks you to connect/sign in when you install it
Keywords
twilio, sms, voice, whatsapp, rcs, messaging, verify, sendgrid, email, compliance, conversation-relay, conversation-memory
Source
https://github.com/openai/plugins/tree/main/plugins/twilio-developer-kit
Website
https://www.twilio.com
Listed in
OpenAI catalog file
Tested by CodexStacks
Not yet

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Listed on CodexStacks

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[![Listed on CodexStacks](https://codexstacks.com/badge.svg)](https://codexstacks.com/p/twilio-developer-kit/)

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<a href="https://codexstacks.com/p/twilio-developer-kit/"><img src="https://codexstacks.com/badge.svg" alt="Listed on CodexStacks" width="172" height="28"></a>

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<a href="https://codexstacks.com/p/twilio-developer-kit/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #3a2c26;border-radius:12px;background:#0d0b0a;color:#f3ece6;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#f3ece6">Twilio Developer Kit</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#b5a9a1">Official Codex plugin · 55 skills</span><span style="display:block;margin:0 0 10px;color:#ddd3cc">Procedural knowledge that guides AI coding agents to the right Twilio APIs for any use case. Covers channel selection…</span><span style="font-size:12px;font-weight:600;color:#ffb347">View on CodexStacks →</span></a>

Markdown summary

**[Twilio Developer Kit on CodexStacks](https://codexstacks.com/p/twilio-developer-kit/)**: Official Codex plugin with 55 skills. Install: `codex plugin add twilio-developer-kit@openai-curated`

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