API Fundamentals Overview

RESTful HTTP endpoints that consume and return JSON. Requires API token authentication for most endpoints.

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API V2 Endpoint

https://api.telnyx.com/v2

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S3 Compatible Endpoints

• us-central-1.telnyxcloudstorage.com
• us-east-1.telnyxcloudstorage.com
• us-west-1.telnyxcloudstorage.com

See Cloud Storage API endpoints

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Legacy Endpoints

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V1 HTTP

• https://api.telnyx.com/origination
• https://api.telnyx.com/termination
• https://api.telnyx.com/messaging
• https://api.telnyx.com/reporting
• https://api.telnyx.com/security
• https://api.telnyx.com/account
• https://api.telnyx.com/caller-information
• https://api.telnyx.com/LRN
• https://api.telnyx.com/LRNLookup
• https://sms.telnyx.com/messages

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DNS ENUM

• api.telnyx.com
• lrnlookup.telnyx.com

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XML UDP

• lrnlookup.telnyx.com

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Core Concepts

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Authentication & Security

Learn how to authenticate with Telnyx APIs and secure your applications.

• API Authentication - API keys, tokens, and authentication methods
• Request & Response Handling - HTTP patterns and best practices

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Reliability & Performance

Understand how to build robust applications that handle errors gracefully.

• Rate Limiting - Understanding and handling API rate limits
• Error Handling & Retries - Retry patterns and error handling strategies

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Data Standards

Follow Telnyx conventions for data formatting and API interactions.

• Parameters & Field Names - Naming conventions and data formats

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Real-time Communications

Implement real-time features using webhooks and event-driven architecture.

• Webhook Fundamentals - Understanding and implementing webhooks