Webhooks FAQs
Get answers to the most common questions about webhooks including management, network support, retries, and troubleshooting
Credits and Rate Limits
How many addresses can I input for 1 webhook?
How many addresses can I input for 1 webhook?
Will I be charged credits if I change the webhook URL in the Helius dashboard after creating the webhook?
Will I be charged credits if I change the webhook URL in the Helius dashboard after creating the webhook?
How many credits does it cost to receive a webhook notification?
How many credits does it cost to receive a webhook notification?
How much does it cost to create, edit, and delete webhooks?
How much does it cost to create, edit, and delete webhooks?
Supported Networks
Are webhooks available on Solana Devnet?
Are webhooks available on Solana Devnet?
"network":"devnet" when creating your webhook to monitor Devnet transactions and events.Can I input 'localhost' for my webhook URL?
Can I input 'localhost' for my webhook URL?
Using Webhooks
How can I verify that the webhook came from Helius?
How can I verify that the webhook came from Helius?
Authorization header when sending data to your webhook endpoint, allowing you to verify the request’s authenticity.What is the difference between 'raw' and 'enhanced' webhooks?
What is the difference between 'raw' and 'enhanced' webhooks?
When does the Webhook send a notification?
When does the Webhook send a notification?
Retries
What is the retry policy for webhooks?
What is the retry policy for webhooks?
Do webhooks post failed transactions?
Do webhooks post failed transactions?
Troubleshooting Webhooks
Why is my webhook dropping data?
Why is my webhook dropping data?
Why aren't my webhooks working?
Why aren't my webhooks working?
Why does my webhook not send me all transactions of a certain type (such as TOKEN_MINT)?
Why does my webhook not send me all transactions of a certain type (such as TOKEN_MINT)?
TOKEN_MINT webhook only triggers for specific programs like Candy Machine V1, and Solana Program Library. It doesn’t cover all token minting events across the entire blockchain. For broader monitoring, consider using a more general account or program subscription via webhooks with “ANY” transaction type filtering.