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API reference

Browse, test, and implement APIs.

Get started in minutes

Make your first API call in under 5 minutes.

This quickstart walks through the basic setup: create an account, generate an API key, and send a test request. The examples use the same request in several languages, so you can start with the one that matches your stack.

Customize your first request

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Need some help?

Troubleshoot common issues or ask for help.

I get a 401 Unauthorized error

Check that your API key is present and valid.

Make sure you replaced YOUR_API_KEY in the example.

Confirm the Authorization header uses Bearer YOUR_API_KEY.

I get a 400 Bad Request error

Check your request body first.

Make sure the JSON is valid and the message field is included.

Also confirm you send Content-Type: application/json.

The request succeeds, but the result is not what I expect

Start with the sample payload before testing custom input.

Check the response status field to confirm whether the request was only queued.

If you change the payload shape, verify the endpoint accepts those fields.

My local example does not run

Check that your runtime and dependencies are installed.

For JavaScript, install the SDK before running the example.

For Python, make sure requests is available in your environment.

With your first request done, use the guides for deeper setup and the API reference for endpoints and parameters.

Get started API reference

Create your API key

Set up your account, then generate an API key for local testing and your first integration.

Make your first request

Pick a language below, replace YOUR_API_KEY, and run.

// Import the SDK
import ExampleAPI from "example-api";

// Initialize the client
const client = new ExampleAPI({ apiKey: "YOUR_API_KEY" });

// Send your first message
const response = await client.messages.send({
  message: "Hello, world!"
});

import requests

response = requests.post(
    "https://api.example.com/messages",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json",
    },
    json={
        "message": "Hello, world!"
    },
)

print(response.json())

curl -X POST https://api.example.com/messages \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "message": "Hello, world!"
  }'

package main

import (
    "bytes"
    "fmt"
    "io"
    "net/http"
)

func main() {
    body := []byte(`{"message":"Hello, world!"}`)

    req, err := http.NewRequest("POST", "https://api.example.com/messages", bytes.NewBuffer(body))
    if err != nil {
        panic(err)
    }

    req.Header.Set("Authorization", "Bearer YOUR_API_KEY")
    req.Header.Set("Content-Type", "application/json")

    resp, err := http.DefaultClient.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    responseBody, err := io.ReadAll(resp.Body)
    if err != nil {
        panic(err)
    }

    fmt.Println(string(responseBody))
}

Parse the response

If the request succeeds, you should get a response like this:

response.json

{
  "id": "msg_1234567890",
  "message": "Hello, world!",
  "status": "queued",
  "createdAt": "2026-01-01T12:00:00Z"
}

Learn more about the developer platform

Read guides, watch tutorials, and learn more about working with the developer platform and integrating it with your own stack.

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