Skip to main content

​
Overview

The Kaspa Developer Platform (KDP) API uses API keys to authenticate requests. You can get your API key by signing up at developer.kas.fyi.

​
Using Your API Key

Include your API key in the x-api-key header with each request: 
curl https://api.kas.fyi/addresses/kaspa:qpzpfwcsqsxhxwup26r55fd0ghqlhyugz8cp6y3wxuddc02vcxtjg75pspnwz/tag \
  -H "x-api-key: YOUR_API_KEY"
Keep your API key secure and never expose it in client-side code or public repositories.

​
Example Usage

​
JavaScript/TypeScript

const response = await fetch('https://api.kas.fyi/addresses/kaspa:qpzpfwcsqsxhxwup26r55fd0ghqlhyugz8cp6y3wxuddc02vcxtjg75pspnwz/tag', {
  headers: {
    'x-api-key': 'YOUR_API_KEY'
  }
});

const data = await response.json();

​
Python

import requests

headers = {
    'x-api-key': 'YOUR_API_KEY'
}

response = requests.get(
    'https://api.kas.fyi/addresses/kaspa:qpzpfwcsqsxhxwup26r55fd0ghqlhyugz8cp6y3wxuddc02vcxtjg75pspnwz/tag',
    headers=headers
)

data = response.json()

​
Go

client := &http.Client{}
req, _ := http.NewRequest("GET", "https://api.kas.fyi/addresses/kaspa:qpzpfwcsqsxhxwup26r55fd0ghqlhyugz8cp6y3wxuddc02vcxtjg75pspnwz/tag", nil)
req.Header.Add("x-api-key", "YOUR_API_KEY")

resp, _ := client.Do(req)

​
Best Practices

  1. Store API keys securely: Use environment variables or secure key management services
  2. Rotate keys regularly: Generate new API keys periodically for better security
  3. Monitor usage: Keep track of your API usage to avoid hitting rate limits
  4. Use HTTPS only: Always make requests over HTTPS to protect your API key

​
Error Handling

If your API key is missing or invalid, you’ll receive a 401 Unauthorized response: 
{
  "statusCode": 401,
  "message": "x-api-key is missing from header"
}
or 
{
  "statusCode": 401,
  "message": "Invalid API key"
}
⌘I