Crypto APIsInstall

Summary

Create a Crypto APIs webhook subscription for a selected blockchain event type. The node sends the event-specific subscription details to the API and returns the created subscription.

Inputs

• Event Type (required) — Choose one of eight supported events: unconfirmed or confirmed coin transactions, confirmed token or internal transactions, their each-confirmation variants, or block mined.
• Callback URL (required) — Webhook URL that will receive event notifications.
• Callback Secret Key — Optional secret key for verifying callback signatures.
• Allow Duplicates — Whether to allow duplicate subscriptions for the same address and event; defaults to false.
• Blockchain (required) — Select a blockchain supported by the chosen event type.
• Network (required) — Select a network supported by the chosen event type and blockchain.
• Address (required) — Address to monitor for address-based events. Not shown for Block Mined.
• Confirmations Count (required) — For each-confirmation event types, the number of confirmations to track.
• Receive Callback On — For confirmed event types without each-confirmation behavior, optionally specify the exact confirmation number for the callback; 0 selects the default behavior.

Output shape

A single subscription record.

The source uses the selected event type to choose a dedicated API endpoint and sends the applicable fields in the API request. The available blockchain and network choices vary by event type.

Links

• n8n community nodes installation guide