--- "@context": https://schema.org "@type": TechArticle "@id": https://www.twilio.com/docs#article headline: "Docs: API Reference, Tutorials, and Integration" description: Reference documentation for all Twilio products. Code snippets, tutorials, and sample apps for common use cases and communications solutions. url: https://www.twilio.com/docs inLanguage: en author: "@type": Organization name: Twilio Developer Education Team publisher: "@type": Organization name: Twilio --- # Twilio Docs Build better and engage your customers across all channels with our API reference documentation, quickstarts, SDKs and multi-language code samples. ## Conversations Turn fragmented interactions into continuous conversations with persistent memory, intelligent orchestration, and real-time context for humans and AI agents. * [Conversation Memory](/docs/conversations/memory): Give agents (human or AI) persistent memory across channels and sessions by extracting intelligence from conversations. * [Conversation Orchestrator](/docs/conversations/orchestrator): Connect channels into one continuous conversation that persists, even as an interaction moves across channels or teams. * [Conversation Intelligence](/docs/conversations/intelligence): Turn voice and messaging interactions into valuable context with AI-powered language transcription and analysis. * [Conversation Relay](/docs/voice/twiml/connect/conversationrelay): Integrate voice AI into your communications stack to power smooth, human-like customer conversation at scale. ## Communications Twilio APIs give you flexibility, global reach, and reliable deliverability to connect with customers anywhere. * [Messaging APIs](/docs/messaging): Send and receive text messages at scale with multichannel APIs for SMS, RCS, WhatsApp, MMS, and more. * [Twilio SendGrid Email API](/docs/sendgrid): Create, send, and manage emails at scale with built-in cloud connections and authentication to maximize inbox placement. * [Voice API](/docs/voice): Add intelligent, customizable voice calling to your systems for smarter, more impactful customer conversations. * [Phone Numbers](/docs/phone-numbers): Get access to toll-free, A2P 10DLC, short codes, and Alphanumeric Sender IDs in over 100 countries. * [Elastic SIP Trunking](/docs/sip-trunking): Connect your communications platform with flexible, secure SIP trunking for reliable, scalable global voice. * [Twilio Flex](/docs/flex): Connect your customers to the right virtual or live agent by orchestrating inbound and outbound interactions. * [Video](/docs/video): Enable global, high quality video calls in your application to maintain a unique, human touch with customers. * [Marketing Campaigns](/docs/sendgrid/ui/sending-email/how-to-send-email-with-marketing-campaigns): Design and send captivating emails at scale with dynamic templates, real-time validation, deliverability insights, and advanced analytics. * [Trust Hub](/docs/trust-hub): Centralized onboarding for SHAKEN/STIR, CNAM, and phone number verification. * [Event Streams](/docs/events): Get a unified, real-time feed of all Twilio events and interactions streamed to multiple destinations. * [Interconnect](/docs/interconnect): Protect your communications with end-to-end, network-level security. * [TaskRouter](/docs/taskrouter): Skills-based routing system that provides the heart of a contact center that you can control from your code. * [Sync](/docs/sync): Sync real-time, two-way data across devices and the cloud with no custom infrastructure or heavy lifting required. * [Twilio Email](/docs/email): Build and scale email workflows alongside other channels like SMS, WhatsApp, and more. ## Authentication Fight fraud and keep customer accounts secure without adding friction to your user experience. * [Verify](/docs/verify): Verify users with a fully managed authentication API optimized for speed, reliability, and fraud prevention. * [Lookup](/docs/lookup): Verify phone numbers, reduce fraud, and improve deliverability with real-time carrier, line type, and identity intelligence. ## Customer Data Unlock insights from your customer interactions to learn exactly how, when, and where they want to hear from you. * [Twilio Segment Connections](/docs/segment/connections/): Connect all your first-party data in a single platform to power personalized customer experiences. * [Twilio Protocols](/docs/segment/protocols/): Take control of data quality at scale with intuitive data controls, a shared data dictionary, and real-time validation. * [Twilio Unify](/docs/segment/unify/): Unify customer data across channels, track real-time interactions, and personalize at scale. * [Twilio Engage](/docs/segment/engage/): Personalized omnichannel campaigns with cross-channel orchestration on a data-first platform. * [Twilio Privacy Portal](/docs/segment/privacy/): Automate and scale data privacy to keep your customer data secure and streamline regulatory compliance. ## Builder Tools Build, deploy, and operate apps at scale with Twilio developer tools. * [Serverless](/docs/serverless): A serverless environment to build communication apps with no servers to spin up or infrastructure to maintain. * [Studio](/docs/studio): Quickly connect channels and orechstrate interactions with a visual workflow builder on Twilio's serverless architecture. * [Functions](/docs/serverless/functions-assets/functions): A serverless environment to quickly create production-grade, event-driven Twilio applications. ## Support and Services Accelerate time to value with Twilio experts for solution design, deployment, and 24/7 support across your customer engagement stack. * [Support Plans](https://www.twilio.com/en-us/support-plans): Basic to personalized support plans to get the help you need for your Twilio account. * [Partners](https://www.twilio.com/en-us/partners): Our network of trusted, reliable partners who can help you build your Twilio use case. * [Professional Services](https://www.twilio.com/en-us/professional-services): A team of Twilio experts to help you get your use case to production sooner or scale faster. ## Featured content * One-time password (OTP): [Create your first verification](/docs/verify/quickstarts) — Quickly verify users via SMS, Passkeys, Silent Network Auth, Voice, WhatsApp, TOTP, Push, Silent Device Approval, and Email. * Fraud prevention: [Format and validate phone numbers](/docs/lookup/quickstart) — Format and validate phone numbers to increase deliverability. Add on data packages to get even more in-depth carrier and caller information. ## Twilio essentials * [General usage](/docs/usage): Learn how to interact with the REST API for account management, development testing, and fraud protection. * [IAM](/docs/iam): Manage your projects, securely authenticate REST API requests, and learn best practices for accessing Twilio's resources. * [Global infrastructure](/docs/global-infrastructure): Control where your application's Twilio-related data is routed, processed, and stored. * [Helper libraries](/docs/libraries): Familiarize yourself with Twilio's server-side, front-end, and mobile SDKs, OpenAPI specifications and Postman collections. * [Phone Numbers](/docs/phone-numbers): Purchase Toll-free, 10-digit long code (10DLC), short codes, and Alphanumeric Sender IDs to deliver your communications. * [Regulatory and compliance](https://www.twilio.com/en-us/guidelines): Compiled resources to help ensure you're communicating effectively and compliantly around the world. ## Developer Toolkit ### Tools * [Building with AI](/docs/ai): Accelerate development with AI coding agents that understand Twilio's APIs. * [Code Exchange](https://www.twilio.com/code-exchange): Get started and build faster with usable code samples for common Twilio use cases. * [Functions](/docs/serverless/functions-assets): A serverless environment to quickly create production-grade, event-driven Twilio applications. * [Marketplace](/docs/marketplace): Seamlessly integrate third-party's partner technology into your Twilio applications. * [OpenAPI](/docs/openapi): Integrate our API with community tools for mocking, testing, generating libraries, Postman integrations, and more. * [Serverless](/docs/serverless): Quickly build and deploy communication apps with no servers to spin up or infrastructure to maintain. * [Studio](/docs/studio): A drag-and-drop builder to create communication workflows. * [TwiML Bins](/docs/serverless/twiml-bins): Provide Twilio-hosted instructions to your Twilio applications. * [Twilio CLI](/docs/twilio-cli): Manage your Twilio resources from your terminal or command prompt. ### Resources * [API status](https://status.twilio.com/): Check real time monitoring of APIs and all services. * [Changelog](https://www.twilio.com/en-us/changelog): See updates and additions to Twilio products. * [Developer Hub](https://www.twilio.com/en-us/developers): Videos, tutorials, events, and code samples. * [Error codes](/docs/api/errors): Full list of all possible Twilio REST API error codes. * [Glossary](/docs/glossary): Understand our key terms and concepts. ### Community * [Blog](https://www.twilio.com/en-us/blog): Read tutorials, community projects and product updates. * [Champions](https://www.twilio.com/en-us/champions): Become a Twilio community champion. * [Developer events](https://www.twilio.com/en-us/events): Join upcoming group events. * [Stack Overflow](https://stackoverflow.com/questions/tagged/twilio): Ask the Twilio community for help. * [Twilio Segment Community](https://community.segment.com/): Ask the Twilio Segment community for help.