Build with Telnyx

Build real-time applications with communications, AI, and edge infrastructure on one global network.

Start with an agent, add programmable calling or messaging, deploy code at the edge, or integrate the Telnyx API directly.

Start here

Choose a guided path to your first working Telnyx integration.

Build your first agent

Create and deploy an agent with state, scheduling, messaging, and model access.

Make your first API request

Create an API key and validate authentication with a safe request.

Start with a working request

GET /v2/balance is read-only. A successful response confirms that your API key and connectivity are working.

export TELNYX_API_KEY="YOUR_API_KEY"

curl --request GET \
  --url https://api.telnyx.com/v2/balance \
  --header "Authorization: Bearer $TELNYX_API_KEY"

Continue with the complete first-request guide →

Popular quickstarts

Choose the outcome you want. Each guide takes you to the product and first implementation step.

Build and host an agent

Create, deploy, and operate an agent with state, scheduling, messaging, and model access.

Send an SMS or MMS

Configure messaging and send your first message through the Telnyx API.

Build programmable calling

Control call flows, media, recording, conferences, and webhooks with the Voice API.

Find and configure a number

Search global inventory, place an order, and assign a number to your application.

Deploy an edge workload

Run functions close to users and Telnyx network services without managing servers.

Verify a user

Send and confirm one-time passcodes over SMS, voice, WhatsApp, or flash call.

Developer resources

API fundamentals

Authentication, requests, responses, errors, and webhooks.

Server-side SDKs

Build with Telnyx libraries for six supported languages.

Telnyx CLI

Work with Telnyx resources from your terminal.

Other APIs

Find specialized and legacy Telnyx interfaces.